Quick answers
- Which hospitals does Gregory J. Jaranko work at?
- Medicare's official clinician data lists Gregory J. Jaranko at 2 hospitals: Berkeley Medical Center and Jefferson Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory J. Jaranko see patients?
- Medicare's clinician data lists 2 practice locations, including Martinsburg, WV and Charles Town, WV. Call before your visit to confirm the address.
- What is Gregory J. Jaranko's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Gregory J. Jaranko accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory J. Jaranko 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 J. Jaranko?
- (304) 274-2273, as listed in official Medicare / NPI Registry data.
- What is Gregory J. Jaranko's NPI number?
- 1487420493. 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 J. Jaranko works
Medicare's Facility Affiliation Data lists Gregory J. Jaranko at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Berkeley Medical CenterMartinsburg, WV · Acute Care Hospital · CCN 510008
- Jefferson Medical CenterRanson, WV · Critical Access Hospital · CCN 511319
Practice locations
Addresses where Gregory J. Jaranko is enrolled with Medicare (CMS data updated 2026-10-02).
- 61 Campus Dr, Suite 106Martinsburg, WV 25404 (304) 274‑2273
- 912 Somerset Blvd, Suite 102Charles Town, WV 25414 (304) 725‑2273
Group practices
Medicare enrollment lists Gregory J. Jaranko as a member of this group (CMS data updated 2026-10-02).
- West Virginia University Medical Corporation1,980 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Martinsburg
Clinicians with the same Medicare primary specialty in Martinsburg, WV — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487420493 |
| 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