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
INTERNAL MEDICINE
Graduated: 1999
Offers telehealth
NPI: 1356309892
DR MARC ALLEN MEDICAL PC
1045 W JERICHO TPKE
SMITHTOWN, NY 117873205
6315438844
Source: CMS National Downloadable File, September 2026.