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

JOHN T MAHER, MD

OBSTETRICS/GYNECOLOGY

Medical school: RUTGERS NEW JERSEY MEDICAL SCHOOL

Graduated: 1989

NPI: 1437238581

Practice Locations (2)

110 4TH AVE

BROOKLYN, NY 112172787

7188525810

KINGS PHYSICIAN SERVICES PC

506 6TH ST

BROOKLYN, NY 112153609

7187803000

Source: CMS National Downloadable File, September 2026.

JOHN MAHER, MD | HealthCareAtlasUSA