Quick answers
- Which hospitals does John Allison work at?
- Medicare's official clinician data lists John Allison at 2 hospitals: The Washington Hospital and UPMC Greene. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Allison see patients?
- Medicare's clinician data lists 2 practice locations, including Mount Morris, PA and Greensboro, PA. Call before your visit to confirm the address.
- What is John Allison's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does John Allison accept Medicare assignment?
- Yes. Medicare's clinician data says John Allison 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 John Allison?
- (724) 324-9001, as listed in official Medicare / NPI Registry data.
- What is John Allison's NPI number?
- 1831651835. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Allison works
Medicare's Facility Affiliation Data lists John Allison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- The Washington HospitalWashington, PA · Acute Care Hospital · CCN 390042
- UPMC GreeneWaynesburg, PA · Acute Care Hospital · CCN 390150
Practice locations
Addresses where John Allison is enrolled with Medicare (CMS data updated 2026-10-02).
- 120 Locust Ave ExtMount Morris, PA 15349 (724) 324‑9001
- 7 Glassworks RdGreensboro, PA 15338 (724) 943‑3308
Group practices
Medicare enrollment lists John Allison as a member of this group (CMS data updated 2026-10-02).
- Cornerstone Care Inc.16 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | West Virginia School Of Osteopathic Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831651835 |
| 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