Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Gregory S Willis, DO

Individual provider Gynecologic Oncology Physician · NPI 1184605677

Dr. Gregory S Willis, DO is a Gynecological Oncology in York, Pennsylvania. Graduated from University of North Texas Hsc, College of Osteopathic Med in 1994, 32 years ago. Practices with Pinnacle Health Medical Services, a 1,026-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
32
Trained at
University of North Texas Hsc, College of Osteopathic Med
Licensed in
PA
In the registry since
2005
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1703 Innovation Dr Ste 2001
York, PA 17408-8815
Phone: (717) 801-0739
Fax: (717) 801-0645
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2035 Technology Pkwy Ste 201, Mechanicsburg, PA 17050-9497 — (717) 221-5940

Specialties & licences

Gynecologic Oncology Physician (primary) Taxonomy 207VX0201X · Licence OS009400L (PA)

Record details

NPI number1184605677
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 10, 2005
Last updated in NPPESJanuary 23, 2021
Certification dateJanuary 23, 2021
Mailing address409 S 2nd St Ste 2f, Harrisburg, PA 17104-1612

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGYNECOLOGICAL ONCOLOGY
Also practisesOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF NORTH TEXAS HSC, COLLEGE OF OSTEOPATHIC MED
Graduated 1994 (32 years in practice)
Group practice Pinnacle Health Medical Services — 1026 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations13 on file with Medicare

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