Quick answers
- Which hospitals does Gregory A. Fortier work at?
- Medicare's official clinician data lists Gregory A. Fortier at 2 hospitals: Gettysburg Hospital and WellSpan Ephrata Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Fortier see patients?
- Medicare's clinician data lists 4 practice locations, including York, PA, Gettysburg, PA and Ephrata, PA. Call before your visit to confirm the address.
- What is Gregory A. Fortier's specialty?
- Medicare lists Radiation Oncology as the primary specialty, and also Diagnostic Radiology.
- Does Gregory A. Fortier accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Fortier accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Gregory A. Fortier?
- (717) 851-6120, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Fortier's NPI number?
- 1619964194. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Fortier works
Medicare's Facility Affiliation Data lists Gregory A. Fortier at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Gettysburg HospitalGettysburg, PA · Acute Care Hospital · CCN 390065
- WellSpan Ephrata Community HospitalEphrata, PA · Acute Care Hospital · CCN 390225
Practice locations
Addresses where Gregory A. Fortier is enrolled with Medicare (CMS data updated 2026-10-02).
- 25 Monument RdYork, PA 17403
- 40 V Twin DrGettysburg, PA 17325
- 460 N Reading RdEphrata, PA 17522 (717) 851‑6120
- 460 N Reading Rd, Wellspan Radiology and RadiationEphrata, PA 17522 (717) 721‑4840
Group practices
Medicare enrollment lists Gregory A. Fortier as a member of this group (CMS data updated 2026-10-02).
- WellSpan Medical Group2,480 clinicians in the group
Specialties
- Radiation Oncologyprimary
- Diagnostic Radiologyalso
Other radiation oncologists in York
Clinicians with the same Medicare primary specialty in York, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Virginia School Of Medicine |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619964194 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians