Open Access Colonoscopy

We want to make preventing colon cancer and getting a screening colonoscopy as easy as possible for you and your patients. You just send the information on this form and we will promptly contact the patient.
Physician Referral
Physician Referral

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If you wish to refer a patient to us, please send this information securely to us in just a few clicks and we will promptly follow up.
Patients Login Portal
Patients Login

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Colon Cancer
Colon Cancer

Many people with colon cancer experience no
symptoms in the early stages. Learn more about tests/diagnosis, symptoms, causes, risk factors and treatment.
Healthy Diets!

Low Residue diets and other special diets.

Gluten-Free Foods

Resources and information for gluten-free foods.
The ASGE Endoscopy Unit Recognition Program honors endoscopy units that follow the ASGE guidelines on privileging, quality assurance, endoscopy reprocessing and CDC infection control guidelines Accreditation Association for Ambulatory Health Care Gastroenterology Associates of Tidewater

Felix P. Tiongco, MD, FACP

Felix P. Tiongco, MD, FACP
Dr. Tiongco was born in Manila, Republic of the Philippines and earned his Bachelor of Science degree and the degree of Doctor of Medicine from the University of the Philippines.

Dr. Tiongco is board certified by the American Board of Internal Medicine in the sub-specialties of Internal Medicine and Gastroenterology. He is a Fellow of the American College of Physicians.

He completed his Internal Medicine residency training at Northwestern University and completed a fellowship in Gastroenterology at the University of Illinois at Chicago Medical Center. Dr. Tiongco joined Gastroenterology Associates of Tidewater in 1999.