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Best Addiction Medicine Doctors in Ontario

Written by Andrew Le, MD

Updated February 10, 2025

Introduction to Addiction Medicine in Ontario, California

Definition and scope of Addiction Medicine

Addiction Medicine is a medical specialty that focuses on the diagnosis, treatment, and prevention of substance use disorders and related health conditions. In Ontario, California, this field addresses a wide range of addictions, including alcohol, drugs, and behavioral dependencies.

Specialized medical care for addiction is essential as it combines medical expertise with an understanding of the complex nature of addiction, ensuring comprehensive and effective treatment for patients.

The role of Addiction Medicine specialists in Ontario

Addiction Medicine specialists in Ontario play a key role in diagnosing and treating substance use disorders. They employ evidence-based practices to develop personalized treatment plans, which may include medication-assisted treatment, counseling, and other therapeutic interventions.

These specialists are also trained to manage co-occurring medical and psychiatric conditions, which are common among individuals with substance use disorders. This integrated approach ensures that patients receive comprehensive care addressing both their addiction and any related health issues.


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List of Addiction Medicine Doctors in Ontario

JG

Dr. Joel Grisham

5.0

Ontario, CA

Sex

Male

Languages

English

Phone

(562) 208-1600

American Board of Surgery

Texas Health Presbyterian Hospital - Dallas (Fellowship Hospital, 1980)

University Tex Health Scis Center (Residency Hospital, 1975)

Baylor University Medical Center (Residency Hospital, 1973)

University Ala Hosps (Internship Hospital, 1964)

University of Texas Southwestern Medical Center (Medical School, 1963)

FEDERAL UNIVERSITY OF JUIZ DE FORA / FACULITY OF MEDIICNE ()

English

Addiction Medicine

Internal Medicine

Psychiatric Nursing

Mental Health

Ann Irorere

Ann Irorere

5.0

Ontario, CA

Sex

Female

Languages

English

English

Rula Health - California

Psychiatry

Anxiety Disorders

Addiction Psychiatry

April Bodily

April Bodily

5.0

Ontario, CA

Sex

Female

Languages

English, Spanish

California State University Dominguez Hills (Medical School, 2013)

English

Spanish

Rula Health - California

Psychiatry

Anxiety Disorders

Addiction Psychiatry

Erika Arias

Erika Arias

5.0

Ontario, CA

Sex

Female

Languages

English, Spanish

English

Spanish

Rula Health - California

Psychiatry

Anxiety Disorders

Addiction Psychiatry

AA

Anika Allen

5.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 989-9724

English

Addiction and Substance Abuse Counseling

JM

Jessica Medina

5.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

James Milner

James Milner

5.0

Ontario, CA

Sex

Male

Languages

English

English

Rula Health - California

Marriage & Family Therapy

Counseling

Addiction and Substance Abuse Counseling

Walter Lathy

Walter Lathy

5.0

Ontario, CA

Sex

Male

Languages

English

New Center For Psychoanalysis. Post Seninar Candidate (2014)

New Center For Psychoanalysis, Post Seminar Candidate In Psychoanalysis (2013)

New Center For Psychoanalysis, Certificate In Psychoanalytic Psychotherapy (2009)

Ryokan College, Abd Clinical Psychology (2004)

Immaculate Heart College, Masters In Clinical Psychology (1977)

Immaculate Heart College (Undergraduate School, 1975)

English

Rula Health - California

Individual Counseling

Marriage & Family Therapy

Addiction and Substance Abuse Counseling

MC

Marilyn Cazun

5.0

Ontario, CA

Sex

Female

Languages

English

Phone

(323) 676-1233

English

Rula Health - California

Addiction and Substance Abuse Counseling

Dr. Gayani Desilva

Dr. Gayani Desilva

4.8

Ontario, CA

Sex

Female

Languages

English

Phone

(951) 344-4451

American Board of Psychiatry & Neurology

ALBANY MEDICAL COLLEGE (Medical School)

English

Child & Adolescent Psychiatry

Addiction Psychiatry

Psychiatry

Dr. Jeffrey Unger

Dr. Jeffrey Unger

4.0

Ontario, CA

Sex

Male

Languages

English, Spanish

Phone

(909) 484-2105

American Board of Family Medicine

Kern Medical Center (Internship Hospital, 1981)

Northwestern University Feinberg School of Medicine (Medical School, 1980)

English

Spanish

Saint George Regional Hospital

Flagstaff Medical Center

San Antonio Regional Hospital

Endocrinology, Diabetes & Metabolism

Family Medicine

Addiction Medicine

CM

Crystal Metzmeier

3.0

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

Counseling

Rehabilitation Counseling

Individual Counseling

Group Counseling

Women's Counseling

SH

Dr. Sameer Hassamal

2.0

Ontario, CA

Sex

Male

Languages

English

Phone

(804) 675-5000

American Board of Psychiatry & Neurology

American University of The Caribbean School of Medicine (Medical School, 2010)

English

Kern Medical Center

Addiction Psychiatry

Psychiatry

Brain Injury Medicine

DK

Douglas Kitchen

1.0

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 466-8696

English

Marriage & Family Therapy

Addiction and Substance Abuse Counseling

Anxiety Disorders

Individual Counseling

Relationship Counseling

SR

Dr. Shannon Robinson

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(800) 579-7202

American Board of Preventive Medicine

American Board of Psychiatry & Neurology

University of Louisville (Medical School, 1996)

English

Psychiatry

Addiction Medicine

EJ

Dr. Erik Johnson

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 458-1350

American Board of Preventive Medicine

American Board of Psychiatry & Neurology

Touro College of Osteopathic Medicine (Medical School, 2014)

English

Psychiatry

Addiction Medicine

Dr. Tanya Scurry

Dr. Tanya Scurry

N/A

Ontario, CA

Sex

Female

Languages

English, Spanish

Phone

(909) 443-5191

American Board of Psychiatry & Neurology

University of Washington Medical Center (Fellowship Hospital, 2009)

UNIVERSITY OF KANSAS MEDICAL CENTER (Residency Hospital, 2008)

University of Kansas School of Medicine (Internship Hospital, 2005)

American University of The Caribbean School of Medicine (Medical School, 2004)

University of Washington (Undergraduate School, 1995)

English

Spanish

McLaren Bay Region

Telepsychiatry

Addiction Psychiatry

Adult Psychiatry

Anxiety Disorders

RG

Ronald Gonzales

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 458-1350

English

Addiction and Substance Abuse Counseling

LQ

Linda Quinonez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

NC

Norman Croom

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 933-6341

English

Addiction and Substance Abuse Counseling

RC

Rena Cantu

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 983-4466

English

Addiction and Substance Abuse Counseling

YH

Yesenia Hernandez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

AK

Arif Khwaja

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4506

English

Addiction and Substance Abuse Counseling

AP

Andria Prickett

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

MH

Melissa Hacker

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 949-4667

English

Addiction and Substance Abuse Counseling

DY

Doris Young

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(951) 205-4445

English

Addiction and Substance Abuse Counseling

DZ

Daniel Zatarain

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 458-1375

English

Addiction and Substance Abuse Counseling

JH

Jason Herrera

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

CC

Carlos Cabello

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

DM

Denuene Munns

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

PC

Patrick Czaja

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

RF

Rodolfo Fernandez

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 331-8471

English

Addiction and Substance Abuse Counseling

KR

Krystal Rasmussen

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(210) 673-8111

English

Addiction and Substance Abuse Counseling

FR

Frank Rios

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

CC

Carlos Chavez

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

DM

Dana Mathews

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

JB

Jabari Boyd

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

JE

Jeffrey Everett

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(714) 423-2996

English

Addiction and Substance Abuse Counseling

LH

Luz Howard

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

MR

Monica Ramos

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 452-4952

English

Addiction and Substance Abuse Counseling

JO

Jessica Ortiz

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

ML

Mia Lujan

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

JS

Jennifer Smith

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

RC

Rafael Capacete

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

LS

Lee Singleton

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 464-0400

English

Addiction and Substance Abuse Counseling

LYJ

Lewis Young Jr

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 762-1440

English

Addiction and Substance Abuse Counseling

JA

Jesus Avitia

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 458-1350

English

Addiction and Substance Abuse Counseling

SM

Steven Morris

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 045-8137

English

Addiction and Substance Abuse Counseling

DS

Deborah Service

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 989-9724

English

Addiction and Substance Abuse Counseling

CV

Crystal Venegas

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

JP

Jorge Pedroza

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 865-2336

English

Addiction and Substance Abuse Counseling

LS

Lisa Seliz

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

KR

Kristopher Reyes

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

QH

Quan Hancock

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

BD

Brittany Duarte

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

TP

Tobe Primicerio

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

AM

Alexander Murray

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

JF

Jackey Finch

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

JR

Joseph Reyna

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

EC

Erica Caudillo

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 331-8820

English

Addiction and Substance Abuse Counseling

Bruce Emerson

Bruce Emerson

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 319-7839

Pacific Oaks College MA (2010)

Pacific Oaks College (Medical School, 2010)

La County Usc Medical Center (Undergraduate School, 1992)

Registered Nurse ()

English

Anxiety Disorders

Marriage & Family Therapy

Addiction and Substance Abuse Counseling

Individual Counseling

Relationship Counseling

DT

Dr. Dennis Toutant

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 989-9724

English

Addiction and Substance Abuse Counseling

TJ

Toni Jackson-Rainey

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(626) 442-4177

English

Addiction and Substance Abuse Counseling

KK

Kent Klawer

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

LA

Laura Amador

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

DP

Debra Pimienta

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

CS

Carina Shaw

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

TS

Thomas Sago

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

SR

Steven Roberson

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

IC

Ingrid Clignett

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 624-1233

English

Addiction and Substance Abuse Counseling

AF

Andrew Freeman

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

JM

John Morgan

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

WW

Wendy Wise

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

MM

Michael Maynard

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

CD

Cristy David

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

TH

Trask Hernandez

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-2171

English

Addiction and Substance Abuse Counseling

NM

Nicholas Munoz

N/A

Ontario, CA

Sex

Male

Languages

English

English

Addiction and Substance Abuse Counseling

WO

William Ortiz

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

KG

Krystle Greely

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(818) 241-6780

English

Addiction and Substance Abuse Counseling

MM

Michelle Morales

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 989-9724

English

Addiction and Substance Abuse Counseling

AP

Alice Pruitt

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

JT

Jennifer Taylor

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

RF

Rudy Flores

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

PS

Patryc Sinkfield-Counts

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

GG

Gloria Gutierrez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

GL

George Lira

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-7111

English

Addiction and Substance Abuse Counseling

LC

Laura Caloca

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

JM

Janice Macias

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 889-6519

English

Addiction and Substance Abuse Counseling

KC

Kevin Carter

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-2171

English

Addiction and Substance Abuse Counseling

JG

Joyce Gardner

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

GG

Gina Gomez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

TI

Tracy Isaac

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

LG

Lisanne Grey

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 458-1376

English

Addiction and Substance Abuse Counseling

CM

Cynthia Mendez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

AL

Aimee Lowe

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

YC

Yesenia Covarrubias

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(951) 955-2105

English

Addiction and Substance Abuse Counseling

MV

Mona Vasquez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 983-4466

English

Addiction and Substance Abuse Counseling

RY

Rosemary Yates

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

AB

Aubree Bradford

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

KF

Kaylin Fitzgerald

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

CA

Cynthia Abeyta

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

SS

Sharlene Salgado

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 464-0400

English

Addiction and Substance Abuse Counseling

MT

Michael Thompson

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

SG

Sarah Gomez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 418-6937

English

Addiction and Substance Abuse Counseling

HC

Hollis Copeland

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 989-9724

English

Addiction and Substance Abuse Counseling

TR

Tonnette Richardson

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

EC

Elizabeth Cuevas

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

CW

Carlyn Werderman

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550

English

Addiction and Substance Abuse Counseling

MB

Mignon Bell

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 395-0888

English

Addiction and Substance Abuse Counseling

RS

Richard Solano

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 986-7111

English

Addiction and Substance Abuse Counseling

ER

Edith Ramirez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

EG

Elizabeth Guilleaume

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 608-2002

English

Addiction and Substance Abuse Counseling

KH

Kevin Hudson

N/A

Ontario, CA

Sex

Male

Languages

English

Phone

(909) 932-1069

English

Addiction and Substance Abuse Counseling

CF

Cynthia Felix

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 464-0400

English

Addiction and Substance Abuse Counseling

JA

Jennifer Avilez

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 476-2023

English

Addiction and Substance Abuse Counseling

EG

Esther Gibson

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 981-6121

English

Addiction and Substance Abuse Counseling

KP

Kelsey Pollock

N/A

Ontario, CA

Sex

Female

Languages

English

Phone

(909) 986-4550