Dr. Mark R. Fleisher is a gastroenterologist in Jacksonville, Florida and is affiliated with Baptist Medical Center Jacksonville, Jacksonville Center for Endoscopy-Southside and Jacksonville Endoscopy Centers. He received his medical degree from Tel Aviv University Sackler and has been in practice for more than 20 years. Dr. Mark R. Fleisher has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Mark R. Fleisher accepts Medicare, Aetna, Humana, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted.