HealthCareAtlasUSA

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 TAN, MD

RHEUMATOLOGY

Medical school: STATE UNIVERSITY OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE

Graduated: 1983

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1083770580

Practice Locations (1)

222 E MIDDLE COUNTRY RD, SUITE 312

SMITHTOWN, NY 117872814

6317248900

Source: CMS National Downloadable File, September 2026.

MARK TAN, MD | HealthCareAtlasUSA