HealthCareAtlasUSA

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Doctors / PA

GREGORY S WILLIS, DO

GYNECOLOGICAL ONCOLOGY

Medical school: UNIVERSITY OF NORTH TEXAS HSC, COLLEGE OF OSTEOPATHIC MED

Graduated: 1994

Also: OBSTETRICS/GYNECOLOGY

NPI: 1184605677

Practice Locations (13)

PINNACLE HEALTH MEDICAL SERVICES

18 N ST

HANOVER, PA 173312275

PINNACLE HEALTH MEDICAL SERVICES

300 HIGHLAND AVE

HANOVER, PA 173312297

7173163711

PINNACLE HEALTH MEDICAL SERVICES

20 N ST, UPMC MATERNAL FETAL MEDICINE

HANOVER, PA 173312275

7172318472

PINNACLE HEALTH MEDICAL SERVICES

111 S FRONT ST

HARRISBURG, PA 171012010

PINNACLE HEALTH MEDICAL SERVICES

2501 N 3RD ST, KLINE HEALTH CENTER FOOT AND ANKLE

HARRISBURG, PA 171101904

7177822100

PINNACLE HEALTH MEDICAL SERVICES

2501 N 3RD ST 2ND FL KLINE HC, REACH PROGRAM

HARRISBURG, PA 171101904

7177822363

PINNACLE HEALTH MEDICAL SERVICES

2501 N 3RD ST FL, 2 KLINE HEALTH CENTER

HARRISBURG, PA 171101904

7177822100

PINNACLE HEALTH MEDICAL SERVICES

2501 N 3RD STREET 2ND FLOOR, PINNACLEHEALTH PSYCHOLOGICAL ASSOCIATES

HARRISBURG, PA 171101904

7177822143

PINNACLE HEALTH MEDICAL SERVICES

2150 NOLL DR, SUITE 220

LANCASTER, PA 176037605

7179880611

PINNACLE HEALTH MEDICAL SERVICES

2150 NOLL DRIVE

LANCASTER, PA 176037605

PINNACLE HEALTH MEDICAL SERVICES

2150 NOLL DRVE, SUITE 200

LANCASTER, PA 176037605

7175443190

PINNACLE HEALTH MEDICAL SERVICES

1701 INNOVATION DR

YORK, PA 174088815

7178438623

PINNACLE HEALTH MEDICAL SERVICES

1703 INNOVATION DR

YORK, PA 174088815

Source: CMS National Downloadable File, September 2026.