Dr. Robert A. Mecum is a gastroenterologist in Whittier, California and is affiliated with multiple hospitals in the area, including PIH Health Hospital-Whittier and Whittier Hospital Medical Center. He received his medical degree from University of Illinois College of Medicine at Chicago and has been in practice for more than 20 years. Dr. Robert A. Mecum has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Robert A. Mecum accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.