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Best Emergency Medicine Doctors in Ontario

Written by Andrew Le, MD

Updated November 23, 2024

Introduction to Emergency Medicine in Ontario

Definition and scope of Emergency Medicine

Emergency Medicine is a medical specialty focused on the rapid diagnosis and treatment of acute illnesses and injuries. In Ontario, California, Emergency Medicine physicians provide immediate care for a wide range of medical conditions, from minor injuries to life-threatening situations.

Emergency departments serve as a critical component of the healthcare system, offering 24/7 access to medical care for the community. They act as a safety net for those without regular healthcare providers and play a key role in disaster response and public health emergencies.

The role of Emergency Medicine Physicians

Emergency Medicine physicians in Ontario are responsible for quickly assessing patients, determining the severity of their conditions, and initiating appropriate treatments. They must be able to handle multiple patients simultaneously and make rapid decisions under pressure.

These specialists require a diverse skill set, including expertise in various medical fields, proficiency in performing emergency procedures, and strong communication abilities. Board certification by the American Board of Emergency Medicine is a standard qualification, as evidenced by many physicians in our data set, such as Dr. Michelle Sperry and Dr. Vincent Green.


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List of Emergency Medicine Doctors in Ontario

TH

Dr. Theresa Hsiao

5.0

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

WJ

Dr. Walter Bush Jr

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(562) 868-3751

American Board of Emergency Medicine

Wake Forest School of Medicine (Medical School, 2003)

English

Maui Memorial Medical Center

Community Hospital of Huntington Park

Centinela Hospital Medical Center

Emergency Medicine

MS

Dr. Michelle Sperry

5.0

Ontario, CA

Sex

Female

Languages

English

American Board of Emergency Medicine

Thomas Jefferson University (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AB

Dr. Allan Bock

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 985-2811

Loma Linda University (Medical School, 1973)

English

San Antonio Regional Hospital

Emergency Medicine

FJ

Dr. Francisco Ornelas Jr

5.0

Ontario, CA

Sex

Male

Languages

English, Spanish

Phone

(909) 464-8666

American Board of Emergency Medicine

University of Southern California Keck School of Medicine (Medical School, 1994)

English

Spanish

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

JP

Dr. Jorge Perez

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(424) 259-8405

American Board of Emergency Medicine

L A Co Usc Medical Center (Residency Hospital)

University of Ca (Medical School, 1996)

English

AHMC Anaheim Regional Medical Center

Emergency Medicine

JM

Dr. John Morrison

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

St. Georges University School of Medicine (Medical School, 2010)

English

San Antonio Regional Hospital

Montclair Hospital Medical Center

Chino Valley Medical Center

Emergency Medicine

Dr. Vincent Green

Dr. Vincent Green

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(818) 708-5170

American Board of Emergency Medicine

New York Presbyterian Brooklyn Methodist Hospital (Residency Hospital, 2001)

Newyork-Presbyterian Brooklyn Methodist Hospital (Internship Hospital, 1999)

UNIVERSITY OF CALIFORNIA AT LOS ANGELES / CENTER FOR HEALTH SCIENCES (Medical School, 1998)

University of California, Riverside (Undergraduate School, 1995)

English

Providence Cedars-Sinai Tarzana Medical Center

Emergency Medicine

LP

Dr. Lisa Patrick

5.0

Ontario, CA

Sex

Female

Languages

English

University of Illinois College of Medicine (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

JD

Dr. Jose Diaz

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

University of California at Berkeley (Medical School, 1996)

English

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

LP

Dr. Larry Potts

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4848

Loma Linda University (Medical School, 1973)

English

San Antonio Regional Hospital

Emergency Medicine

JT

Jennifer Tsai

5.0

Ontario, CA

Sex

Female

Languages

English, Chinese

Phone

(909) 276-7168

English

Chinese

Emergency Medicine

DG

Dr. David Guerrieri

4.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 880-6400

Los Angeles County - USC Medical Center (Medical School, 1979)

English

Emergency Medicine

RH

Dr. Russell Hsieh

3.7

Ontario, CA

Sex

Male

Languages

English

Phone

(915) 545-6500

American Board of Emergency Medicine

St. Georges University School of Medicine (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

FK

Dr. Faraaz Khan

3.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

St. Georges University School of Medicine (Medical School, 2000)

English

San Antonio Regional Hospital

Emergency Medicine

HS

Dr. Hala Sabry

3.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 920-4747

American Osteopathic Board of Emergency Medicine

English

PeaceHealth St. John Medical Center

Emergency Medicine

WK

Dr. Wook Kang

3.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

Rosalind Franklin University Chicago Medical School (Medical School, 2005)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

LV

Dr. Luis Villegas

3.0

Ontario, CA

Sex

Male

Languages

English

Phone

(951) 737-4343

American Board of Emergency Medicine

English

Montclair Hospital Medical Center

Chino Valley Medical Center

Corona Regional Medical Center

Emergency Medicine

JH

Dr. Jennifer Heppner

3.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

University of California at San Francisco (Medical School, 2009)

English

San Antonio Regional Hospital

Emergency Medicine

MK

Dr. Matthew Kwon

3.0

Ontario, CA

Sex

Male

Languages

English

Phone

(949) 365-1400

American Board of Emergency Medicine

English

Roper St. Francis Berkeley Hospital

Roper St. Francis Mount Pleasant Hospital

Roper Hospital

Emergency Medicine

HT

Dr. Heather Tassone

2.6

Ontario, CA

Sex

Female

Languages

English, Spanish

Phone

(909) 985-2811

American Board of Emergency Medicine

Western University of Health Sciences (Medical School, 2003)

English

Spanish

Loma Linda University Medical Center

San Antonio Regional Hospital

Emergency Medicine

JF

Dr. James Fisgus

2.6

Ontario, CA

Sex

Male

Languages

English, Spanish

Phone

(909) 985-2811

American Board of Emergency Medicine

Loma Linda University (Medical School, 1979)

English

Spanish

San Antonio Regional Hospital

Emergency Medicine

PR

Dr. Pablo Razo

2.3

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

Stanford University (Medical School, 1999)

English

San Antonio Regional Hospital

Emergency Medicine

KW

Dr. Keith Wresch

1.8

Ontario, CA

Sex

Male

Languages

English

Loma Linda University School of Medicine (Medical School)

English

Family Medicine

Emergency Medicine

GZ

Dr. Gilbert Zini

1.7

Ontario, CA

Sex

Male

Languages

English, Arabic

Phone

(909) 982-1888

VRIJE UNIVERSITY BRUSSEL / FACULTY OF MEDICINE AND PHARMACY (Medical School, 1973)

English

Arabic

Desert Valley Hospital

Emergency Medicine

MC

Dr. Martin Carrillo

1.5

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8666

American Board of Emergency Medicine

University of California at Berkeley (Medical School, 1992)

English

Montclair Hospital Medical Center

Chino Valley Medical Center

Emergency Medicine

SD

Dr. Sharon Dabby

1.0

Ontario, CA

Sex

Female

Languages

English

Phone

(310) 423-8600

American Board of Emergency Medicine

University of Southern California Keck School of Medicine (Medical School, 2002)

English

Cedars-Sinai Medical Center

Emergency Medicine

HR

Dr. Haider Rizvi

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

Meharry Medical College (Medical School, 1993)

English

San Antonio Regional Hospital

Emergency Medicine

TK

Dr. Theomal Kurera

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

UNIVERSITY OF SOUTHERN COLORADO (Medical School, 2003)

English

Montclair Hospital Medical Center

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

LA

Dr. Leigh Avera

1.0

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

American Osteopathic Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

TC

Dr. Thomas Cho

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

Loma Linda University Medical Center (Residency Hospital, 2008)

Loma Linda University Medical Center (Internship Hospital, 2006)

Loma Linda University School of Medicine (Medical School, 2004)

English

San Antonio Regional Hospital

Emergency Medicine

JI

Dr. Joe Peraza IV

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

LS

Dr. Layla Seyedabadi

1.0

Ontario, CA

Sex

Female

Languages

English, Arabic

Phone

(909) 427-5000

American Board of Emergency Medicine

A. T. Still University Kirksville College of Osteopathic Medicine (Medical School, 1998)

English

Arabic

Kaiser Permanente Fontana Medical Center

Emergency Medicine

JW

Dr. James Winn

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8666

American Board of Emergency Medicine

Western University of Health Sciences (Medical School, 1989)

English

Chino Valley Medical Center

Emergency Medicine

DN

Dr. Dalia Nassman

1.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 985-2811

American Osteopathic Board of Emergency Medicine

English

San Antonio Regional Hospital

Emergency Medicine

AR

Dr. Arada Rongkavilit

1.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

St. Georges University School of Medicine (Medical School, 2006)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AA

Dr. Arman Afagh

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

New York University (Medical School, 1999)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

RP

Dr. Ricardo Padilla

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

San Antonio Regional Hospital

Community Hospital of San Bernardino

Arrowhead Regional Medical Center

Emergency Medicine

Emergency Medical Technology (EMT)

NP

Dr. Nolan Page

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

Northern Inyo Hospital

San Antonio Regional Hospital

Emergency Medicine

LY

Dr. Lisa Yee

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AM

Dr. Ashok Madahar

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8666

American Board of Emergency Medicine

UNIVERSITY OF DELHI / COLLEGE OF MEDICAL SCIENCES (Medical School, 1978)

English

Chino Valley Medical Center

Huntington Beach Hospital

Emergency Medicine

RP

Dr. Ryan Passaro

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(507) 284-5135

English

Bakersfield Memorial Hospital

Emergency Medicine

JB

Dr. Justin Britton

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

HOWARD UNIVERSITY / COLLEGE OF ARTS AND SCIENCES / MUSIC DEPARTMENT (Medical School, 2011)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

KT

Dr. Kim Trinh

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(833) 574-2273

American Board of Emergency Medicine

CALIFORNIA STATE UNIVERSITY / SACRAMENTO / COLLEGE OF HEALTH AND HUMAN SERVICES (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

GM

Dr. Gary McLarty

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

Loma Linda University (Medical School, 1983)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

MR

Dr. Miguel Rodriguez

N/A

Ontario, CA

Sex

Male

Languages

English, Spanish

Phone

(909) 599-6811

American Board of Emergency Medicine

Stanford University (Medical School, 1993)

English

Spanish

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

KP

Dr. Kevin Parkes

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

Loma Linda University Medical Center (Residency Hospital, 2001)

Loma Linda University Medical Center (Internship Hospital, 1999)

University of California, Irvine School of Medicine (Medical School, 1998)

English

San Antonio Regional Hospital

Emergency Medicine

AW

Dr. Alexis Wildenauer

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 427-5000

American Osteopathic Board of Emergency Medicine

Touro College of Osteopathic Medicine (Medical School, 2011)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

MD

Dr. Ming Yuan Denley

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(309) 662-3311

English

OSF Saint Joseph Medical Center

OSF Saint James-John W. Albrecht Medical Center

Montclair Hospital Medical Center

Emergency Medicine

AM

Dr. Abdelmoughite Mouttaki

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(833) 574-2273

American Osteopathic Board of Emergency Medicine

Touro College of Osteopathic Medicine (Medical School, 2014)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

UO

Dr. Udoh Obioha

N/A

Ontario, CA

Sex

Male

Languages

English

UNIVERSITY OF NIGERIA / COLLEGE OF MEDICINE (Medical School, 1979)

English

Internal Medicine

Emergency Medicine

AA

Dr. Ashraf Abdelkerim

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(310) 850-7000

American Board of Emergency Medicine

University of California, Los Angeles David Geffen School of Medicine (Medical School, 2004)

English

Providence St. Joseph Hospital Orange

Emergency Medicine

MX

Dr. Meng Xi

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(510) 204-2500

American Board of Emergency Medicine

English

Bear Valley Community Hospital

Kaiser Permanente Fontana Medical Center

Palo Verde Hospital

Emergency Medicine

TN

Dr. Tay Nguyen

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

BS

Dr. Benjamen Schoenberg

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(951) 788-3537

English

San Antonio Regional Hospital

Riverside Community Hospital

Emergency Medicine

DW

Dr. Debbie Washke

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 558-4444

American Board of Emergency Medicine

Loma Linda University Medical Center (Residency Hospital)

Loma Linda University School of Medicine (Medical School, 2002)

English

Loma Linda University Medical Center

Emergency Medicine

JH

Dr. Jorge Heredia

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(951) 427-5000

American Board of Emergency Medicine

Harbor-UCLA Medical Center (Medical School, 2012)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

DB

Dr. Debbie Bervel

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

Loma Linda University (Medical School, 1986)

English

San Antonio Regional Hospital

Emergency Medicine

TS

Dr. Tiffany Sin

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 464-8600

English

Montclair Hospital Medical Center

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

MZ

Dr. Michael Zhou

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

BK

Dr. Brandon Kuang

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

English

Montclair Hospital Medical Center

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

DG

Dr. Dwight Guan

N/A

Ontario, CA

Sex

Male

Languages

English, Mandarin

Phone

(909) 985-2811

University of Tennessee College of Medicine (Medical School, 1985)

English

Mandarin

San Antonio Regional Hospital

Emergency Medicine

BC

Berniece Chen

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

English

Emergency Medicine

MP

Dr. Matthew Potts

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

WASHINGTON UNIVERSITY / COLLEGE OF DENTAL MEDICINE (Medical School, 2001)

English

San Antonio Regional Hospital

Emergency Medicine

SC

Dr. Silas Chiu

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AG

Dr. Alexander Dalton Guillaume

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

LC

Dr. Lisa Chen

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

American Board of Emergency Medicine

University of Illinois College of Medicine (Medical School, 2013)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

NK

Dr. Natwalee Kittisarapong

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

American Osteopathic Board of Emergency Medicine

Nova Southeastern University (Medical School, 2010)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

CK

Dr. Cindy Kuo

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 724-5000

American Osteopathic Board of Emergency Medicine

Midwestern University Chicago College of Osteopathic Medicine (Medical School, 2003)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

VM

Dr. Vijay Mohan

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 949-9299

Kempegowda Institute of Medical Sciences (Medical School, 1965)

English

Pacifica Hospital of the Valley

Emergency Medicine

FS

Dr. Felipe Sanchez

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

UNIVERSITY OF CALIFORNIA AT LOS ANGELES / CENTER FOR HEALTH SCIENCES (Medical School, 2009)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

ZR

Dr. Zakiyyah Rasheed

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

PHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE (Medical School, 2008)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

SW

Dr. Sandy Wang

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(888) 750-0036

American Osteopathic Board of Emergency Medicine

Western University of Health Sciences (Medical School, 2005)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

SM

Dr. Scott Miller

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(574) 647-7459

American Board of Emergency Medicine

University Il College Of Med (Residency Hospital)

University School of Med (Medical School, 2001)

English

Community Hospital of Bremen

Memorial Hospital of South Bend

Emergency Medicine

DC

Dr. Douglas Cochrane

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8666

University of Southern California Keck School of Medicine (Medical School, 1991)

English

Chino Valley Medical Center

San Dimas Community Hospital

Southern California Hospital at Hollywood

Emergency Medicine

DT

Dr. Dennis Trigueros

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 985-2811

American Board of Emergency Medicine

UNIVERSITY OF CALIFORNIA AT LOS ANGELES / CENTER FOR HEALTH SCIENCES (Medical School, 2002)

English

San Antonio Regional Hospital

Emergency Medicine

PA

Dr. Pierre Assaf

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

American Board of Internal Medicine

Ain Shams University Faculty of Medicine (Medical School, 1976)

English

Kaiser Permanente Fontana Medical Center

Internal Medicine

Emergency Medicine

SB

Dr. Shirin Badrtalei-Shah

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 427-5000

American Osteopathic Board of Emergency Medicine

Touro College of Osteopathic Medicine (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

BS

Dr. Barbara-Jean Santos

N/A

Ontario, CA

Sex

Female

Languages

English

University of California, Irvine School of Medicine (Medical School, 2009)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

SC

Dr. Sara Caldwell

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

UNIVERSITY OF SOUTHERN COLORADO (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

RB

Dr. Rame Bashir

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 558-4085

English

Emergency Medicine

JC

Dr. Jonathan Chock

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

Oregon Health & Science University (Medical School, 1998)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AA

Dr. Alp Arkun

N/A

Ontario, CA

Sex

Male

Languages

English

American Board of Emergency Medicine

St. Georges University School of Medicine (Medical School, 2006)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

SLJ

Santiago Lopez Jr

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(833) 574-2273

English

Good Samaritan Hospital Medical Center

Emergency Medicine

VG

Dr. Victoria Galea

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 558-4085

American Board of Emergency Medicine

English

Loma Linda University Medical Center

San Antonio Regional Hospital

Emergency Medicine

ML

Marisa Look

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(607) 737-4100

English

Emergency Medicine

DL

Dr. David Lee

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AR

Dr. Aurore Richard

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

American Osteopathic Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

WW

Dr. William Wu

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 724-3530

American Board of Pathology

State University of New York Downstate Health Sciences University College of Medicine (Medical School, 2008)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

DP

Dr. Devan Pandya

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

Kaiser Permanente Riverside Medical Center

Emergency Medicine

SA

Dr. Sana Ahmed

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

San Antonio Regional Hospital

Emergency Medicine

MW

Dr. Marissa Wolfe

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(323) 409-1000

English

Emergency Medicine

PK

Dr. Pranav Kachhi

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(310) 379-2134

American Board of Emergency Medicine

Thomas Jefferson University (Medical School, 1997)

English

Temecula Valley Hospital

Corona Regional Medical Center

Emergency Medicine

CA

Dr. Craig Allred

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(310) 222-2350

American Board of Emergency Medicine

Harbor-UCLA Medical Center (Medical School, 2014)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

RB

Romeo Bilugan

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(833) 574-2273

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

VG

Dr. Victoria Gillis

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(800) 201-2123

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

SM

Dr. Sarah Monks

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

SOUTHWEST COLLEGE OF NATUROPATHIC MEDICINEHEALTH SCIENCES (Medical School, 2017)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

TM

Dr. Tyler Mitchell

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 580-1000

American Board of Emergency Medicine

English

San Antonio Regional Hospital

Riverside University Health System-Medical Center

Emergency Medicine

KJ

Dr. Kenneth Johnson

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

English

Montclair Hospital Medical Center

Chino Valley Medical Center

Corona Regional Medical Center

Emergency Medicine

TD

Dr. Tam Dao

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

St. Georges University School of Medicine (Medical School, 2011)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

MM

Dr. Meina Michael

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

San Antonio Regional Hospital

Emergency Medicine

AY

Dr. Allison Yee

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

English

El Camino Hospital

Emergency Medicine

BA

Dr. Brecken Armstrong

N/A

Ontario, CA

Sex

Female

Languages

English

American Board of Emergency Medicine

University of California, Los Angeles David Geffen School of Medicine (Medical School, 2005)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

DL

Dae-Won Lee

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 427-5000

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

AA

Dr. Amber Andreatta

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

San Antonio Regional Hospital

Emergency Medicine

RS

Dr. Robert Splawn

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 923-4080

Boston University (Medical School, 1987)

English

Emergency Medicine

JC

Dr. Jeffrey Dela Cruz

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(925) 295-5100

American Board of Emergency Medicine

Harbor-UCLA Medical Center (Medical School, 2012)

English

Parkview Community Hospital Medical Center

Montclair Hospital Medical Center

Chino Valley Medical Center

Emergency Medicine

PK

Dr. Peter Kim

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 920-4747

American Board of Emergency Medicine

English

San Antonio Regional Hospital

Emergency Medicine

JF

Dr. Jean Flammia

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(310) 698-5452

American Board of Emergency Medicine

EASTERN NEW MEXICO UNIVERSITY / RUIDOSO (Medical School, 2015)

English

Montclair Hospital Medical Center

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

JZ

Dr. Jennifer Zhou

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(833) 574-2273

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

KL

Dr. Khoa Luong

N/A

Ontario, CA

Sex

Male

Languages

English

American Osteopathic Board of Emergency Medicine

A. T. Still University Kirksville College of Osteopathic Medicine (Medical School, 1997)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

CS

Dr. Chase Socha

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 464-8600

American Board of Emergency Medicine

English

Montclair Hospital Medical Center

Chino Valley Medical Center

Emergency Medicine

AL

Dr. Aaron Lee

N/A

Ontario, CA

Sex

Male

Languages

English

American Board of Emergency Medicine

Drexel University (Medical School, 2008)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

BR

Dr. Brian Richards

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(833) 574-2273

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

JC

Dr. Jeffrey Chao

N/A

Ontario, CA

Sex

Male

Languages

English

American Board of Emergency Medicine

University of Illinois College of Medicine (Medical School, 2007)

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

TN

Dr. Tina Nguyen

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(800) 464-4000

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

CK

Dr. Catherine Kim

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 427-5000

American Board of Emergency Medicine

English

Kaiser Permanente Fontana Medical Center

Emergency Medicine

JS

Dr. Jose Sing

N/A

Ontario, CA

Sex

Male

Languages

English, Spanish

Phone

(909) 464-8600

American Board of Emergency Medicine

UNIVERSITY OF CALIFORNIA AT LOS ANGELES / CENTER FOR HEALTH SCIENCES (Medical School, 1992)

English

Spanish

Chino Valley Medical Center

San Dimas Community Hospital

Emergency Medicine

SC

Dr. Stephen Cerni

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(484) 526-4000

Western University of Health Sciences (Medical School)

English

St. Luke's Hospital-Bethlehem Campus

Emergency Medicine

Choosing an Emergency Medicine Physician in Ontario

Factors to consider when selecting a doctor

Board certification and credentials

  • American Board of Emergency Medicine certification
  • Other relevant certifications

Experience and specializations

  • Years of practice
  • Specialized training or focus areas

Hospital affiliations

  • Local hospitals in Ontario and surrounding areas
  • Importance of hospital quality and resources

Patient reviews and ratings

  • Importance of considering multiple sources
  • Interpreting star ratings and written reviews

Resources for finding Emergency Medicine Physicians in Ontario

Online directories and healthcare websites

  • Healthgrades and similar platforms
  • Hospital websites and physician directories

Referrals from primary care physicians

  • Leveraging existing medical relationships
  • Importance of coordinated care

Local hospital recommendations

  • Contacting emergency departments directly
  • Hospital-provided physician information

Top-Ranked Emergency Medicine Physicians in Ontario

Dr. Lisa Patrick

Background and Qualifications

  • Education: University of Illinois College of Medicine (Medical School, 2007)
  • Board Certification: Not specified in the data
  • Languages: English

Practice Information

  • Hospital Affiliation: Kaiser Permanente Fontana Medical Center
  • Years of Experience: Approximately 16 years since medical school

Patient Feedback

  • Star Rating: 5.0 out of 5
  • Number of Reviews: 3
  • Highest rated Emergency Medicine physician in Ontario based on available data

Dr. Michelle Sperry

Background and Qualifications

  • Education: Thomas Jefferson University (Medical School, 2007)
  • Board Certification: American Board of Emergency Medicine
  • Languages: English

Practice Information

  • Hospital Affiliation: Kaiser Permanente Fontana Medical Center
  • Years of Experience: Approximately 16 years since medical school

Patient Feedback

  • Star Rating: 5.0 out of 5
  • Number of Reviews: 1

Dr. Theresa Hsiao

Background and Qualifications

  • Education: Not specified in the data
  • Board Certification: American Board of Emergency Medicine
  • Languages: English

Practice Information

  • Hospital Affiliation: Kaiser Permanente Fontana Medical Center
  • Years of Experience: Not specified in the data

Patient Feedback

  • Star Rating: 5.0 out of 5
  • Number of Reviews: 2

Dr. Vincent Green

Background and Qualifications

  • Education: University of California, Los Angeles (Medical School, 1998)
  • Board Certification: American Board of Emergency Medicine
  • Languages: English

Practice Information

  • Hospital Affiliation: Providence Cedars-Sinai Tarzana Medical Center
  • Years of Experience: Approximately 25 years since medical school

Patient Feedback

  • Star Rating: 5.0 out of 5
  • Number of Reviews: 1

Dr. Jose Diaz

Background and Qualifications

  • Education: University of California at Berkeley (Medical School, 1996)
  • Board Certification: American Board of Emergency Medicine
  • Languages: English

Practice Information

  • Hospital Affiliations: Chino Valley Medical Center, San Dimas Community Hospital
  • Years of Experience: Approximately 27 years since medical school

Patient Feedback

  • Star Rating: 5.0 out of 5
  • Number of Reviews: 1

Additional Considerations for Emergency Medical Care in Ontario

Emergency room wait times and triage systems

Understanding triage priorities

  • Explanation of how patients are prioritized
  • Factors affecting wait times

Strategies for managing wait times

  • When to consider urgent care centers
  • Preparing for potential long waits

Insurance coverage and billing for emergency services

Understanding your insurance coverage

  • In-network vs. out-of-network providers
  • Coverage for emergency services

Navigating billing and payment options

  • Explanation of common emergency room charges
  • Options for uninsured patients

Follow-up care after emergency room visits

Importance of follow-up appointments

  • Ensuring continuity of care
  • Preventing return visits to the ER

Coordinating care with primary physicians

  • Communicating ER visit details to your regular doctor
  • Managing ongoing treatment plans