Request an Appointment Thanks

Call Us: 631-591-3000

Thank you for your recent request for an appointment with East End Gastroentrology & Hepatology.

Please be aware that you have submitted a request only. Someone from our office will contact you within 24-48 business hours to confirm a date and time.

We look forward to seeing you soon!

The Staff at East End Gastroentrology & Hepatology

Request an Appointment
Physician Referral
Endoscopy Center
Testimonials

"I want to thank all the staff that put in so much time and hard work on getting my hepatitis treatment approved, it has been life changing."

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Locate Us

Riverhead Office

715 Roanoke ave, Building B, Riverhead, NY 11901

Manorville Office & Endoscopy Center

287 Wading River Road Unit 2 Manorville, NY 11949

East End Gastroenterology & Hepatology is the medical practice of Mark J. Coronel, MD. He practices in two convenient locations serving east Long Island and the communities surrounding Riverhead in Suffolk County, NY.

Our practice treats patients 16 and older with the signed consent of a parent or guardian if under the age of 18.

Mark J. Coronel, M.D., P.C.

Phone: 631.591.3000

Office Hours:

Monday 9 am – 5 pm
Tuesday 9 am - 5 pm
Wednesday 9 am – 5 pm
Thursday 9 am – 5 pm
Friday 7 am – 3 pm
Sundays: procedures by appointment only