The 20 Best Colonoscopy Doctors near ontario, CA
Find the Experts and Specialists who perform Colonoscopy
S. M. Hammad Rizvi, M.D., Inc.
Syed Rizvi is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Rizvi is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Hypertensive Heart Disease, Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, Gastrostomy, and Endoscopy. Dr. Rizvi is board certified in American Board Of Family Medicine.
ProHealth Partners A Medical Group Inc.
Azhar Majeed is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Majeed is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Hypertensive Heart Disease, Acute Kidney Failure, COVID-19, Gastrostomy, and Endoscopy.
ProHealth Partners A Medical Group Inc.
Gimha Gunawardana is a Geriatrics provider practicing medicine in Upland, California. Dr. Gunawardana is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses End-Stage Renal Disease (ESRD), Sepsis, Pneumonia, Gastrostomy, and Endoscopy.
ProHealth Partners A Medical Group Inc.
Mansurur Khan is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Khan is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Renovascular Hypertension, Stroke, Hypertensive Heart Disease, Gastrostomy, and Endoscopy.
San Antonio Regional Hospital
Zouhair Hakak is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Hakak is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Sepsis, Generalized Tonic-Clonic Seizure, Gastrostomy, and Endoscopy.
Ct Hung MD Inc.
Chuang-ti Hung is a Gastroenterologist practicing medicine in Upland, California. Dr. Hung is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 47 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Trichohepatoenteric Syndrome, Hemorrhoids, Gastrectomy, and Gastrostomy.
Basim Z. Abdelkarim, M.D., Inc.
Basim Abdelkarim is a Gastroenterologist practicing medicine in Upland, California. Dr. Abdelkarim is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 67 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Hemorrhoids, Gastroesophageal Reflux Disease (GERD), Gastrostomy, and Endoscopy. Dr. Abdelkarim is board certified in American Board Of Internal Medicine.
Basim Z. Abdelkarim, M.D., Inc.
Priyanka Yaramada is a Gastroenterologist practicing medicine in Upland, California. She has been practicing medicine for over 18 years. Dr. Yaramada is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 27 other conditions, according to our data. Her clinical expertise encompasses Anemia, Diverticular Disease, Hemorrhoids, Gastrectomy, and Gastrostomy. Dr. Yaramada is board certified in American Board Of Internal Medicine.
Lally Medical Group A Professional Corporation
James Lally is a primary care provider, practicing in Family Medicine in Montclair, California. Dr. Lally is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Costochondritis, Tietz Syndrome, Endoscopy, and Hip Replacement.
Dwaraknath P. Reddy M.D.
Dwaraknath Reddy is a Gastroenterologist practicing medicine in Upland, California. Dr. Reddy is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Esophagitis, Gastrointestinal Bleeding, Swallowing Difficulty, Gastrectomy, and Gastrostomy.
Anthony S. Oh, MD A Medical Corporation
Jared Wong is a General Surgeon and a Colorectal Surgeon practicing medicine in Montclair, California. He has been practicing medicine for over 17 years. Dr. Wong is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Anal Fissure, Familial Colorectal Cancer, Hemorrhoidectomy, and Colonoscopy. Dr. Wong is board certified in American Board Of Colon & Rectal Surgery. Dr. Wong is currently accepting new patients.
Nagasamudra Ashok, M.D.
Anika Muthiah is a primary care provider, practicing in Family Medicine in Montclair, California. Dr. Muthiah is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Sepsis, Peptic Ulcer, Necrosis, Acute Tubular Necrosis, and Colonoscopy.
Montclair Hospital Medical Center
David Nguyen is a primary care provider, practicing in Family Medicine in Montclair, California. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Sepsis, Anemia, Retroperitoneal Inflammation, Bladder Reconstruction, and Thymectomy.
Hadi, Ghassan, E., M.D., Inc.
Ghassan Hadi is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Hadi is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, End-Stage Renal Disease (ESRD), Sepsis, Gastrostomy, and Endoscopy. Dr. Hadi is board certified in American Board Of Internal Medicine.
J.Singh D.O. Inc
Jhujhar Singh is a Geriatrics provider practicing medicine in Montclair, California. Dr. Singh is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Sepsis, Pneumonia, Necrosis, Gastrostomy, and Endoscopy.
Kevin Jenkins, Do, Inc.
Kevin Jenkins is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Jenkins is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Diverticular Disease, Helicobacter Pylori Infection, Gastrostomy, and Colonoscopy. Dr. Jenkins is board certified in American Osteopathic Board Of Internal Medicine.
Ontario Vineyard Medical Offices
Poyrung Poysophon is a Sports Medicine provider practicing medicine in Ontario, California. Dr. Poysophon is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Seasonal Affective Disorder (SAD), Colonoscopy, and Endoscopy.
Chino Valley Medical Center
Umesh Shah is a Gastroenterologist practicing medicine in Chino, California. Dr. Shah is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Esophagitis, Hereditary Pancreatitis, Gastrectomy, and Gastrostomy.
Chaparral Medical Group Inc.
Hla Maung-Hwang is a Nephrologist practicing medicine in Claremont, California. Dr. Maung-Hwang is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, End-Stage Renal Disease (ESRD), Necrosis, Gastrostomy, and Colonoscopy.
Dr Lee Pain MD Inc
John Lee is a Pain Medicine provider practicing medicine in Chino, California. Dr. Lee is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Fibromyalgia, Complex Regional Pain Syndrome, Facet Joint Syndrome, Gastrostomy, and Colonoscopy. Dr. Lee is currently accepting new patients.
Last Updated: 09/26/2026