Quick answers
- Which hospitals does Martha Flagg work at?
- Medicare's official clinician data lists Martha Flagg at 1 hospital: Peterson Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Martha Flagg see patients?
- Medicare's clinician data lists 2 practice locations, including Kerrville, TX. Call before your visit to confirm the address.
- What is Martha Flagg's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Martha Flagg accept Medicare assignment?
- Yes. Medicare's clinician data says Martha Flagg 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 Martha Flagg?
- (830) 258-7747, as listed in official Medicare / NPI Registry data.
- What is Martha Flagg's NPI number?
- 1689908832. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Martha Flagg works
Medicare's Facility Affiliation Data lists Martha Flagg at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Peterson Regional Medical CenterKerrville, TX · Acute Care Hospital · CCN 450007
Practice locations
Addresses where Martha Flagg is enrolled with Medicare (CMS data updated 2026-10-02).
- 260 Cully DrKerrville, TX 78028 (830) 258‑7747
- 551 Hill Country DrKerrville, TX 78028 (830) 896‑4200
Group practices
Medicare enrollment lists Martha Flagg as a member of this group (CMS data updated 2026-10-02).
- Usacs Integrated Acute Care Services of Texas, PLLC387 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Kerrville
Clinicians with the same Medicare primary specialty in Kerrville, TX — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 1992 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689908832 |
| 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