This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / NY

MARK GELFAND, MD

INTERNAL MEDICINE

Graduated: 1986

Offers telehealth

NPI: 1801849658

Practice Locations (3)

415 OCEAN VIEW AVE

Brooklyn, NY 112356828

415 OCEAN VIEW AVE

BROOKLYN, NY 112356828

7189344842

415 OCEANVIEW AVE, GROUND FLOOR

BROOKLYN, NY 112356828

Source: CMS National Downloadable File, September 2026.

MARK GELFAND, MD | HealthCareAtlasUSA