East End Gastroentrology & Hepatology
Our Riverhead office has moved effective March 5th, 2018 please see our new address listed below
Call Us: 631-591-3000

Dr. Coronel may perform upper GI endoscopy in order to see the lining of your upper gastrointestinal tract to find the cause of an abnormal lab test, such as anemia or nutritional deficiencies, or identify different diseases, obtain biopsies or simply remove objects, including food, that is stuck in the upper GI tract. This procedure is often referred to as EGD, or esophagogastroduodenoscopy.


Upper GI endoscopy can help find the cause of unexplained symptoms, such as:

  • Persistent heartburn
  • Bleeding
  • Nausea & vomiting
  • Pain
  • Difficulty swallowing
  • Unexplained weight loss


It may also help Dr. Coronel identify diseases such as:

  • Anemia
  • GERD (gastroesophageal reflux disease)
  • Celiac disease
  • Inflamation or swelling
  • Ulcers
  • Precancerous abnormalities
  • Cancer


Dr. Mark Coronel performs this procedure while you receive light sedation, so you will not feel any discomfort during the procedure.


For convenient high-quality digestive care, call East End Gastroenterology & Hepatology at 631-591-3000. Or use our online Request an Appointment form. Our endoscopy patients come to us from Mastic, Riverhead, Patchogue, East End, Manorville and nearby communities.

Locate Us

Riverhead Office

185 Old Country Road, Suite 3, Riverhead, NY 11901

Manorville Office & Endoscopy Center

496 County Road 111, Bldg. D, Suite 2, Manorville, NY 11949