Dr. Sidney Olefson is a gastroenterologist in Burnt Hills, New York and is affiliated with St. Anne's Hospital. He received his medical degree from Albany Medical College and has been in practice between 11-20 years. Dr. Sidney Olefson has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Sidney Olefson accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.