Quick answers
- Which hospitals does Justin D. Hark work at?
- Medicare's official clinician data lists Justin D. Hark at 1 hospital: Geisinger-Lewistown Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Justin D. Hark see patients?
- Medicare's clinician data lists 1 practice location in Lewistown, PA. Call before your visit to confirm the address.
- What is Justin D. Hark's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Justin D. Hark accept Medicare assignment?
- Yes. Medicare's clinician data says Justin D. Hark 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 Justin D. Hark?
- (717) 248-5411, as listed in official Medicare / NPI Registry data.
- What is Justin D. Hark's NPI number?
- 1649809559. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Justin D. Hark works
Medicare's Facility Affiliation Data lists Justin D. Hark at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Geisinger-Lewistown HospitalLewistown, PA · Acute Care Hospital · CCN 390048
Practice locations
Addresses where Justin D. Hark is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 Highland AveLewistown, PA 17044 (717) 248‑5411
Group practices
Medicare enrollment lists Justin D. Hark as a member of this group (CMS data updated 2026-10-02).
- Geisinger Clinic3,467 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Lewistown
Clinicians with the same Medicare primary specialty in Lewistown, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649809559 |
| 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