Dr. Herbert I. Pasternak is a gastroenterologist in Massapequa, New York and is affiliated with multiple hospitals in the area, including St. Joseph Hospital-Bethpage and North Shore University Hospital at Northwell Health. He received his medical degree from NYIT College Of Osteopathic Medicine and has been in practice for more than 20 years. Dr. Herbert I. Pasternak has expertise in treating inflammatory bowel disease (ibd), gastroenteritis, among other conditions - see all areas of expertise. Dr. Herbert I. Pasternak accepts Medicare, Aetna, Humana, Cigna, Blue Cross - see other insurance plans accepted.