Quick answers
- Which hospitals does Abigail C. Holzwarth work at?
- Medicare's official clinician data lists Abigail C. Holzwarth at 5 hospitals: Billings Clinic Hospital, Glendive Medical Center, North Big Horn Hospital District, Powell Valley Hospital and Sheridan Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Abigail C. Holzwarth see patients?
- Medicare's clinician data lists 3 practice locations, including Cody, WY, Plentywood, MT and Billings, MT. Call before your visit to confirm the address.
- What is Abigail C. Holzwarth's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Abigail C. Holzwarth accept Medicare assignment?
- Yes. Medicare's clinician data says Abigail C. Holzwarth 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.
- Does Abigail C. Holzwarth offer telehealth?
- Medicare's clinician data says Abigail C. Holzwarth offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Abigail C. Holzwarth?
- (307) 527-7561, as listed in official Medicare / NPI Registry data.
- What is Abigail C. Holzwarth's NPI number?
- 1104544576. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Abigail C. Holzwarth works
Medicare's Facility Affiliation Data lists Abigail C. Holzwarth at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- Glendive Medical CenterGlendive, MT · Critical Access Hospital · CCN 271332
- North Big Horn Hospital DistrictLovell, WY · Critical Access Hospital · CCN 531309
- Powell Valley HospitalPowell, WY · Critical Access Hospital · CCN 531310
- Sheridan Memorial HospitalSheridan, WY · Acute Care Hospital · CCN 530006
Practice locations
Addresses where Abigail C. Holzwarth is enrolled with Medicare (CMS data updated 2026-10-02).
- 201 Yellowstone AveCody, WY 82414 (307) 527‑7561
- 440 W Laurel AvePlentywood, MT 59254 (406) 765‑3700
- 801 N 29th StBillings, MT 59101 (406) 238‑2500
Group practices
Medicare enrollment lists Abigail C. Holzwarth as a member of these groups (CMS data updated 2026-10-02).
- Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
- Sheridan Memorial Hospital Association31 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Cody
Clinicians with the same Medicare primary specialty in Cody, WY — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1104544576 |
| 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