Quick answers
- Does Cathleen G. Callahan accept Medicare assignment?
- Yes. Medicare's clinician data says Cathleen G. Callahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Cathleen G. Callahan's NPI number?
- 1235308354. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cathleen G. Callahan works
Medicare's Facility Affiliation Data lists Cathleen G. Callahan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lewisgale Hospital MontgomeryBlacksburg, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490110
Practice locations
Addresses where Cathleen G. Callahan is enrolled with Medicare (CMS data updated October 2, 2026).
- 215 Roanoke StChristiansburg, VA 24073 (540) 381‑0820
- 219 Buchanan StPearisburg, VA 24134 (540) 381‑0820
Group practices
Medicare enrollment lists Cathleen G. Callahan as a member of this group (CMS data updated October 2, 2026).
- Free Clinic of the New River Valley Inc15 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Virginia
Clinicians with the same Medicare primary specialty in Virginia — not a recommendation.
Other clinicians in Free Clinic of the New River Valley Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Carolina At Chapel Hill School Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235308354 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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