A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. Mark Korsten:
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Specialties & Research
Dr. Mark Korsten, MD is board certified in Internal Medicine and Gastroenterology.
He has special expertise in 10 Areas, including Colonic Polyps, Colonoscopy, and Constipation.7 more special expertise areas
More Specialties & Research
Education & Awards
Dr. Korsten graduated from Yale University, New Haven. He has 2 awards.
Dr. Korsten has 3 hospital affiliations:
- Mt Sinai Hospital
- Bronx Veterans Affairs Medical Center
- VA Medical Center - Bronx