Dr. Joseph B. Felder is a gastroenterologist in New York, New York and is affiliated with Lenox Hill Hospital at Northwell Health and Yorkville Endoscopy. He received his medical degree from The University of Texas Health Science Center at San Antonio and has been in practice for more than 20 years. Dr. Joseph B. Felder has expertise in treating colonoscopy, upper gi endoscopy, gastroenteritis, among other conditions - see all areas of expertise. Dr. Joseph B. Felder accepts Medicare, Aetna, Blue Cross, United Healthcare - see other insurance plans accepted.