Dr. Peter D. Bloom is a gastroenterologist in Williamsville, New York. He received his medical degree from University at Buffalo School of Medicine and has been in practice for more than 20 years. Dr. Peter D. Bloom has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Peter D. Bloom accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.