Quick answers
- Which hospitals does Caroline A. Armstrong work at?
- Medicare's official clinician data lists Caroline A. Armstrong at 1 hospital: Grant Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Caroline A. Armstrong see patients?
- Medicare's clinician data lists 2 practice locations, including Petersburg, WV. Call before your visit to confirm the address.
- What is Caroline A. Armstrong's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Caroline A. Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says Caroline A. Armstrong 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 Caroline A. Armstrong?
- (304) 257-1026, as listed in official Medicare / NPI Registry data.
- What is Caroline A. Armstrong's NPI number?
- 1265758585. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Caroline A. Armstrong works
Medicare's Facility Affiliation Data lists Caroline A. Armstrong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grant Memorial HospitalPetersburg, WV · Critical Access Hospital · CCN 511316
Practice locations
Addresses where Caroline A. Armstrong is enrolled with Medicare (CMS data updated 2026-10-02).
- 117 Hospital DrPetersburg, WV 26847 (304) 257‑1026
- 65 Hospital Dr, Suite 102Petersburg, WV 26847 (304) 257‑2527
Group practices
Medicare enrollment lists Caroline A. Armstrong as a member of these groups (CMS data updated 2026-10-02).
- Grant Memorial Hospital Inc37 clinicians in the group
- South Branch Hospitalist and Internal Medicine Group PLLC7 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Petersburg
Clinicians with the same Medicare primary specialty in Petersburg, WV — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | West Virginia School Of Osteopathic Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265758585 |
| 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