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 / DC

NICHOLAS MAHONEY, MD

OPHTHALMOLOGY

Medical school: PERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA

Graduated: 2006

NPI: 1194875864

Practice Locations (6)

JOHNS HOPKINS UNIVERSITY

5255 LOUGHBORO NWRD

WASHINGTON, DC 200162633

2026606500

JOHNS HOPKINS UNIVERSITY

1800 ORLEANS ST

BALTIMORE, MD 212870010

4109555000

JOHNS HOPKINS UNIVERSITY

600 N WOLF ST

BALTIMORE, MD 212870005

4109555000

JOHNS HOPKINS UNIVERSITY

600 N WOLFE ST, BLALOCK 266

BALTIMORE, MD 212870005

4105024340

JOHNS HOPKINS UNIVERSITY

601 N CAROLINE ST

BALTIMORE, MD 212870006

4109555080

JOHNS HOPKINS UNIVERSITY

10751 FALLS RD

LUTHERVILLE, MD 210934517

4109553663

Source: CMS National Downloadable File, September 2026.

NICHOLAS MAHONEY, MD | HealthCareAtlasUSA