Quick answers
- Which hospitals does Sidney P. Williamson work at?
- Medicare's official clinician data lists Sidney P. Williamson at 1 hospital: Bozeman Health Deaconess Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sidney P. Williamson see patients?
- Medicare's clinician data lists 1 practice location in Bozeman, MT. Call before your visit to confirm the address.
- What is Sidney P. Williamson's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Sidney P. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says Sidney P. Williamson 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 Sidney P. Williamson?
- (406) 414-5000, as listed in official Medicare / NPI Registry data.
- What is Sidney P. Williamson's NPI number?
- 1649368044. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sidney P. Williamson works
Medicare's Facility Affiliation Data lists Sidney P. Williamson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospital · CCN 270057
Practice locations
Addresses where Sidney P. Williamson is enrolled with Medicare (CMS data updated 2026-10-02).
- 915 Highland BlvdBozeman, MT 59715 (406) 414‑5000
Group practices
Medicare enrollment lists Sidney P. Williamson as a member of this group (CMS data updated 2026-10-02).
- Bozeman Health Deaconess Hospital320 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Bozeman
Clinicians with the same Medicare primary specialty in Bozeman, MT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649368044 |
| 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