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 / CA

JOHN HARKER, DO

ORTHOPEDIC SURGERY

Medical school: NOVA SOUTHEASTERN COLLEGE OF OSTEO MEDICINE

Graduated: 1989

NPI: 1013026269

Practice Locations (3)

PAUL J WISNIEWSKI DO INC

18523 CORWIN RD, SUITE A

APPLE VALLEY, CA 923072300

4073356950

701 N HERCULES AVE A

Clearwater, FL 337652029

701 N HERCULES AVE, UNIT A

CLEARWATER, FL 337652029

7275629317

Source: CMS National Downloadable File, September 2026.

JOHN HARKER, DO | HealthCareAtlasUSA