MediFind found 80 doctor with experience in Colonoscopy near Happy Valley, OR. Of these, 73 are Experienced, 4 are Advanced, 2 are Elite and 1 are Distinguished.
University Professional Services
Seth Crockett is a Gastroenterologist in Portland, Oregon. Dr. Crockett is rated as an Elite provider by MediFind in Colonoscopy. His top areas of expertise are Colorectal Cancer, Colorectal Polyps, Sclerosing Mesenteritis, Colonoscopy, and Endoscopy. Dr. Crockett is currently accepting new patients.
David Lieberman is a Gastroenterologist in Portland, Oregon. Dr. Lieberman is rated as an Elite provider by MediFind in Colonoscopy. His top areas of expertise are Colorectal Cancer, Barrett Esophagus, Familial Colorectal Cancer, Colonoscopy, and Endoscopy.
Amnon Sonnenberg is a Gastroenterologist in Portland, Oregon. Dr. Sonnenberg is rated as a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Helicobacter Pylori Infection, Gastritis, Viral Gastroenteritis, Endoscopy, and Colonoscopy.
The Oregon Clinic, PC
Glenn Eisen is a Gastroenterologist in Portland, Oregon. Dr. Eisen is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Barrett Esophagus, Gastrointestinal Bleeding, Angiodysplasia of the Colon, Colonoscopy, and Endoscopy. Dr. Eisen is currently accepting new patients.
Sunnybrook Medical Office
Rajasekhara Mummadi is a Gastroenterologist in Clackamas, Oregon. Dr. Mummadi is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Colorectal Cancer, Sclerosing Cholangitis, Cholangitis, Colonoscopy, and Endoscopy. Dr. Mummadi is currently accepting new patients.
Kaiser Permanente Sunnybrook Medical Office - Gastroenterology Department
Vikas Garg is a Gastroenterologist in Clackamas, Oregon. Dr. Garg is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hepatitis C, Familial Adenomatous Polyposis, Gardner Syndrome, Gastrectomy, and Endoscopy. Dr. Garg is currently accepting new patients.
Kaiser Permanente Sunnybrook Medical Office - Gastroenterology
Noel Lee is a Gastroenterologist in Clackamas, Oregon. Dr. Lee is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Turcot Syndrome, Gardner Syndrome, Familial Adenomatous Polyposis, Gastrectomy, and Endoscopy. Dr. Lee is currently accepting new patients.
Sunnybrook Medical Office
John Randles is a Gastroenterologist in Clackamas, Oregon. Dr. Randles has been practicing medicine for over 16 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Crohn's Disease, Gardner Syndrome, Turcot Syndrome, Endoscopy, and Gastrectomy. Dr. Randles is currently accepting new patients.
Alan Kaynard is a Gastroenterologist in Portland, Oregon. Dr. Kaynard is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hepatitis, Barrett Esophagus, Crohn's Disease, Endoscopy, and Gastrectomy. Dr. Kaynard is currently accepting new patients.
Ohsu - Center For Health And Healing Clinics
Gregory Cote is a Gastroenterologist in Portland, Oregon. Dr. Cote is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hereditary Pancreatitis, Chronic Pancreatitis, Choledocholithiasis, Endoscopy, and Gallbladder Removal. Dr. Cote is currently accepting new patients.
Thomas Cooney is a primary care provider, practicing in Internal Medicine in Portland, Oregon. Dr. Cooney is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Osteoporosis, Diverticular Disease, Hospital-Acquired Pneumonia, Migraine, and Colonoscopy.
University Professional Services
Jessica Yu is a Gastroenterologist in Portland, Oregon. Dr. Yu is rated as an Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Bile Duct Obstruction, Bile Duct Stricture, Colorectal Polyps, Endoscopy, and Colonoscopy. Dr. Yu is currently accepting new patients.
Theodore Tollivoro is a Gastroenterologist in Portland, Oregon. Dr. Tollivoro is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Acute Pancreatitis, Intestinal Cancer, Childhood Pancreatitis, Gastrectomy, and Colonoscopy.
Portland Adventist Medical Center - Adventist Health Gastroenterology Clinic
Laura Pestana is a Gastroenterologist in Portland, Oregon. Dr. Pestana is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Sclerosing Mesenteritis, Gastrointestinal Bleeding, Irritable Bowel Syndrome (IBS), Colonoscopy, and Endoscopy. Dr. Pestana is currently accepting new patients.
Hsichao Chow is a Gastroenterologist in Portland, Oregon. Dr. Chow is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Mallory-Weiss Syndrome, Bile Duct Stricture, Gastrointestinal Bleeding, Endoscopy, and Gastrectomy. Dr. Chow is currently accepting new patients.
Dirk Van Leeuwen is a Gastroenterologist in Portland, Oregon. Dr. Van Leeuwen is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gastrointestinal Bleeding, Portal Hypertension, Colitis, Endoscopy, and Colonoscopy.
Providence Health And Services Oregon
Kimya-anhcina Nguyen is a General Surgeon in Oregon City, Oregon. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Diverticular Disease, Esophagitis, Hemorrhoids, Gastrectomy, and Colonoscopy.
Legacy Clinics LLC
Anne Peel is a Hospital Medicine provider in Gresham, Oregon. Dr. Peel is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Liver Failure, Febrile Neutropenia, Hemorrhoidectomy, and Hip Replacement.
Legacy Clinics LLC
Nicholas Beach is a primary care provider, practicing in Internal Medicine in Gresham, Oregon. Dr. Beach is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Pulmonary Edema, Heart Failure, Liver Failure, Endoscopy, and Colonoscopy.
Legacy Clinics LLC
Son Do is a Gastroenterologist in Gresham, Oregon. Dr. Do is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gardner Syndrome, Turcot Syndrome, Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy.
Last Updated: 10/30/2025

