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 / NJ

JOHN CHANG, MD

OPHTHALMOLOGY

Medical school: RUTGERS R W JOHNSON MEDICAL SCHOOL (CAM/NEW BRUNS/PISC)

Graduated: 1998

NPI: 1073516027

Practice Locations (2)

MARIA SPINAK, MD, PC

500 N FRANKLIN TPKE

RAMSEY, NJ 074461177

2019959975

MARIA SPINAK, MD, PC

169 N MIDDLETOWN RD

PEARL RIVER, NY 109652057

8457355666

Source: CMS National Downloadable File, September 2026.

JOHN CHANG, MD | HealthCareAtlasUSA