The 20 Best Diarrhea Doctors Near Me in Fontana, CA
Find the Top Diarrhea Experts and Specialists
Kaiser Permanente Fontana Medical Center
Andrea Thorp is a Pediatrics provider practicing medicine in Fontana, California. Dr. Thorp is rated as an Advanced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Diarrhea, Croup, Asthma in Children, and Gastrostomy.
San Bernardino Gastroenterology Associates
George Saffouri is a Gastroenterologist practicing medicine in Rialto, California. Dr. Saffouri is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Diverticular Disease, Chronic Erosive Gastritis, Endoscopy, and Colonoscopy. Dr. Saffouri is board certified in Internal Medicine and Internal Medicine (Sub: Gastroenterology). Dr. Saffouri is currently accepting new patients.
Kaiser Permanente Fontana Medical Center
Christiana Rajasingham is a Pediatrics provider practicing medicine in Fontana, California. Dr. Rajasingham is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Asthma in Children, Diarrhea, and Croup.
Kaiser Permanente Fontana Medical Center
Mireille Farreau is a Pediatrics provider practicing medicine in Fontana, California. Dr. Farreau is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Scarlet Fever, Asthma in Children, Croup, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).
San Bernardino Gastroenterology Associates, Inc.
Victor Guharoy is a Gastroenterologist practicing medicine in Rialto, California. He has been practicing medicine for over 12 years. Dr. Guharoy is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hemorrhoids, Diverticular Disease, Acute Pancreatitis, and Gastrectomy. Dr. Guharoy is board certified in American Board Of Internal Medicine.
Andrea S Tieng MD, Inc
Dr. Andrea Tieng was born and raised in New York City. She graduated Summa Cum Laude from the City University of New York and completed her medical degree at the State University of New York Health Science Center at the SUNY Downstate College of Medicine in Brooklyn, New York.Her internship and residency in Internal Medicine was completed at the Albert Einstein College of Medicine at Long Island Jewish Medical Center in New Hyde Park, New York, where she also fulfilled her Gastroenterology and Hepatology Fellowship.Board Certified by the American Board of Internal Medicine, Dr. Tieng is licensed to practice in both California and New York. She is a member of the American College of Gastroenterology and the American Gastroenterology Association.Prior to founding her own practice in Redlands and San Bernardino, Dr. Tieng worked as a private gastroenterologist at Cedars-Sinai Medical Center in Los Angeles.Dr. Tieng specializes in providing sensitive and compassionate care to women, and delivers personalized care to all patients 18 years and older. Dr. Tieng is a board certified physician who treats patients with gastrointestinal illnesses and liver diseases. She utilizes innovative technology to perform diagnostic and therapeutic procedures of the gastrointestinal tract, including colonoscopy and upper endoscopy. Dr. Tieng is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Diverticular Disease, Familial Adenomatous Polyposis, Gastritis, Gastrectomy, and Endoscopy. Dr. Tieng is board certified in Internal Medicine. Dr. Tieng is currently accepting new patients.
Lasalle Medical Associates
Halima Shahabuddin is a Pediatrics provider practicing medicine in Fontana, California. Dr. Shahabuddin is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Obesity in Children, Viral Gastroenteritis, Delayed Growth, and Autism Spectrum Disorder.
Lasalle Medical Associates
Cynthia Cheng is an Internal Medicine provider practicing medicine in Fontana, California. Dr. Cheng is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Obesity in Children, Delayed Growth, Idiopathic Short Stature (ISS), and Familial Short Stature (FSS).
Kaiser Permanente Fontana
Catherine Lee is a Pediatrics provider practicing medicine in Fontana, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Obesity in Children, Asthma in Children, Autism Spectrum Disorder, and Viral Gastroenteritis.
Kaiser Permanente Fontana Medical Center
Mitzi Loubriel is a primary care provider, practicing in Pediatrics in Fontana, California. Dr. Loubriel is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Otitis, Bronchitis, Asthma, and Roseola.
Kaiser Permanente Fontana Medical Center
Mun-wah Ng is a Pediatric Gastroenterologist practicing medicine in Fontana, California. Dr. Ng is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Cardiofaciocutaneous Syndrome, Fecal Impaction, RASopathies, and Encopresis.
Southern California Permanente Medical Group
Michelle Ko is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Ko is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Asthma, Asthma in Children, Parinaud Oculoglandular Syndrome, and Grass Allergy.
Kaiser Permanente Fontana Medical Center
James Killeen is a Pediatrics provider practicing medicine in Fontana, California. Dr. Killeen is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Obesity in Children, Asthma in Children, Croup, and Viral Gastroenteritis.
Fontana Medical Center
Richard Leon is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Leon is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Lymphangitis, Parinaud Oculoglandular Syndrome, Opisthotonos, and Muscle Spasms. Dr. Leon is currently accepting new patients.
Kaiser Permanente Fontana Medical Center
Bruce Grill is a Pediatrics provider practicing medicine in Fontana, California. Dr. Grill is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Delayed Growth, Autism Spectrum Disorder, Encopresis, and Colitis.
Fontana Medical Center
Sayuri Tokutake is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Tokutake is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Nasal Flaring, Morning Sickness, Neuralgia, and Cellulitis. Dr. Tokutake is currently accepting new patients.
Fontana Medical Center
Tommy Oei is a Gastroenterologist practicing medicine in Fontana, California. Dr. Oei is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Alcoholic Cirrhosis, Choledocholithiasis, Gallstones, Bile Duct Stricture, and Endoscopy. Dr. Oei is currently accepting new patients.
Kaiser Permanente Fontana Medical Center - Internal Medicine Department
Brian Cheung is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Cheung is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Costochondritis, Tietz Syndrome, Hypertension, and Familial Hypertension. Dr. Cheung is currently accepting new patients.
Kaiser Permanente Fontana Medical Center
Damon Greene is a Pediatrics provider practicing medicine in Fontana, California. Dr. Greene is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Obesity in Children, Asthma in Children, Autism Spectrum Disorder, and Croup.
Kaiser Permanente Fontana Medical Center
Irene Odom is a Pediatrics provider practicing medicine in Fontana, California. Dr. Odom is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Obesity in Children, Asthma in Children, Croup, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).
Last Updated: 04/28/2026


