The 20 Best Colonoscopy Doctors in California, US
Find the Experts and Specialists who perform Colonoscopy
Office
Tonya Kaltenbach is a Gastroenterologist practicing medicine in Palo Alto, California. Dr. Kaltenbach is rated as an Elite provider by MediFind in Colonoscopy. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Colorectal Polyps, Colorectal Cancer, Turcot Syndrome, Colonoscopy, and Endoscopy.
Anesthesia Preoperative Evaluation Clinic At Stanford Medicine Outpatient Center
Uri Ladabaum is a Gastroenterologist practicing medicine in Redwood City, California. Dr. Ladabaum is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Familial Adenomatous Polyposis, Colonoscopy, and Endoscopy.
Kaiser Permanente Walnut Creek Medical Center - Gastroenterology
Theodore Levin is a Gastroenterologist practicing medicine in Walnut Creek, California. Dr. Levin is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Turcot Syndrome, Colonoscopy, and Endoscopy. Dr. Levin is currently accepting new patients.
Permanente Medical Group Inc.
Douglas Corley is a Gastroenterologist practicing medicine in San Francisco, California. Dr. Corley is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Barrett Esophagus, Familial Colorectal Cancer, Colonoscopy, and Endoscopy.
Office
Ian Gralnek is a Gastroenterologist practicing medicine in Los Angeles, California. Dr. Gralnek is rated as an Elite provider by MediFind in Colonoscopy. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Gastrointestinal Bleeding, Esophageal Varices, Colorectal Cancer, Endoscopy, and Colonoscopy.
UCI Health H.H. Chao Comprehensive Digestive Disease Center
Jason Samarasena is a Gastroenterologist practicing medicine in Orange, California. Dr. Samarasena is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 53 other conditions, according to our data. His clinical expertise encompasses Barrett Esophagus, Jaundice, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Colonoscopy.
George Triadafilopoulos MD Inc
Roy Soetikno is a Gastroenterologist practicing medicine in Mountain View, California. Dr. Soetikno is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Colorectal Polyps, Colorectal Cancer, Gastrointestinal Bleeding, Endoscopy, and Colonoscopy.
Anesthesia Preoperative Evaluation Clinic At Stanford Medicine Outpatient Center
Shai Friedland is a Gastroenterologist practicing medicine in Redwood City, California. Dr. Friedland is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Barrett Esophagus, Colorectal Polyps, Endoscopy, and Colonoscopy.
Office
William Sandborn is a Gastroenterologist practicing medicine in La Jolla, California. Dr. Sandborn is rated as a Distinguished provider by MediFind in Colonoscopy. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Crohn's Disease, Hemorrhagic Proctocolitis, Ulcerative Colitis, Endoscopy, and Colonoscopy.
Mary Whooley is a primary care provider, practicing in Internal Medicine in San Francisco, California. Dr. Whooley is rated as a Distinguished provider by MediFind in Colonoscopy. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Coronary Heart Disease, Heart Failure, Heart Attack, Colonoscopy, and Endoscopy.
Solo Practice - Malik, I
Iftikhar Malik is a Gastroenterologist practicing medicine in Stockton, California. Dr. Malik is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Non-Alcoholic Fatty Liver Disease, Gallbladder Disease, Intestinal Cancer, Colonoscopy, and Endoscopy. Dr. Malik is currently accepting new patients.
Sutter Health Ambulatory Care Center And Surgery Center
Edward Huang is a Gastroenterologist practicing medicine in San Jose, California. Dr. Huang is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Anemia, Familial Adenomatous Polyposis, Turcot Syndrome, Colonoscopy, and Endoscopy. Dr. Huang is board certified in Gastroenterology. Dr. Huang is currently accepting new patients.
Gaspar Nazareno is a Gastroenterologist practicing medicine in Modesto, California. Dr. Nazareno is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 44 other conditions, according to our data. His clinical expertise encompasses Hepatitis, Enlarged Liver, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy. Dr. Nazareno is board certified in Gastroenterology - Board Certified. Dr. Nazareno is currently accepting new patients.
Nandakumar Ravi, M.D., A Professional Corporation
Nandakumar Ravi is a Gastroenterologist practicing medicine in Bakersfield, California. Dr. Ravi is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Bile Duct Obstruction, Esophageal Varices, Gastrostomy, and Gastrectomy. Dr. Ravi is board certified in Internal Medicine (Sub: Gastroenterology). Dr. Ravi is currently accepting new patients.
5 Medical Plaza Care Center
William Chen is a Gastroenterologist practicing medicine in Roseville, California. Dr. Chen is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Esophageal Varices, Cholangitis, Endoscopy, and Colonoscopy. Dr. Chen is board certified in Gastroenterology. Dr. Chen is currently accepting new patients.
Victorio Pidlaoan is a Gastroenterologist practicing medicine in Modesto, California. Dr. Pidlaoan is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Swallowing Difficulty, Painful Swallowing, Gastrectomy, and Colonoscopy. Dr. Pidlaoan is board certified in Gastroenterology - Board Certified. Dr. Pidlaoan is currently accepting new patients.
Gastroenterology - Dignity Health Medical Group - Grass Valley, CA
Care philosophy: I believe in compassionate and personalized care for my patients. I would like to provide same level of care to my patients as if they were my family members. My goal is to contribute to the wellness of our community through the provision of quality services delivered in a compassionate and cost-effective manner. A holistic approach to healthcare, acknowledging each individual's physical spiritual, and psychosocial needs.Why I became a medical provider: My father was a family physician who practiced rural medicine in West Africa. Fascinated and inspired by his unconditional commitment in caring for the needy led me to sincerely follow his foot steps and pursue a career in Gastroenterology. Dr. Godil is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Radiation Enteritis, Gastritis, Chronic Erosive Gastritis, Colonoscopy, and Endoscopy. Dr. Godil is board certified in American Bd Internal Medicine and Internal Medicine (Sub: Gastroenterology). Dr. Godil is currently accepting new patients.
Rajeev Krishan, MD Private Practice
Rajeev Krishan is a Gastroenterologist practicing medicine in Bakersfield, California. Dr. Krishan is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 30 other conditions, according to our data. His clinical expertise encompasses Gastric Dysmotility, Swallowing Difficulty, Painful Swallowing, Gastrectomy, and Gastrostomy. Dr. Krishan is board certified in Internal Medicine (Sub: Gastroenterology). Dr. Krishan is currently accepting new patients.
Sierra Nevada Gastrenterology Medical Associates
To contribute to the wellness of our community through the provision of quality services delivered in a compassionate and cost-effective manner. A holistic approach to healthcare, acknowledging each individual's physical spiritual, and psychosocial needs. Dr. Foliente is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Colonoscopy, and Endoscopy. Dr. Foliente is board certified in Internal Medicine (Sub: Gastroenterology). Dr. Foliente is currently accepting new patients.
Briggsmore Specialty Center
Ambrish Ghumman is a Gastroenterologist practicing medicine in Modesto, California. Dr. Ghumman is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Hepatitis C, Hepatitis, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy. Dr. Ghumman is board certified in Gastroenterology - Board Certified. Dr. Ghumman is currently accepting new patients.
Last Updated: 04/28/2026











