Dr. Mark Pinkhasov, D.O., Pharm.D., is a board‑certified gastroenterologist practicing at Pinnacle Gastroenterology in Queens, New York. His clinical expertise spans colorectal cancer screening, inflammatory bowel disease, advanced endoscopy, and liver disease management.

A Queens native, Dr. Pinkhasov earned his Doctor of Pharmacy degree from St. John’s University (2000–2006) before pursuing a Doctor of Osteopathic Medicine at Touro College (graduated 2011). He completed internal medicine residency at SUNY Downstate and went on to fellowship training—first in hepatology at Rutgers New Jersey Medical School, followed by gastroenterology at Hackensack University Medical Center–Pal­isades, serving as chief fellow from 2017 to 2018.

Board‑certified in both internal medicine and gastroenterology by the American Board of Internal Medicine, Dr. Pinkhasov holds certifications in procedures including colonoscopy, endoscopy, small bowel capsule endoscopy, esophageal manometry/24‑hour pH probe, the CHR O’Regan painless hemorrhoid banding system, and ERCP.

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