Quick answers
- Which hospitals does Timothy Obrien work at?
- Medicare's official clinician data lists Timothy Obrien at 5 hospitals: Billings Clinic Hospital, Bozeman Health Big Sky Medical Center, Bozeman Health Deaconess Hospital, Livingston Healthcare and Madison Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy Obrien see patients?
- Medicare's clinician data lists 1 practice location in Bozeman, MT. Call before your visit to confirm the address.
- What is Timothy Obrien's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Timothy Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy Obrien 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 Timothy Obrien?
- (406) 586-8029, as listed in official Medicare / NPI Registry data.
- What is Timothy Obrien's NPI number?
- 1922008374. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy Obrien works
Medicare's Facility Affiliation Data lists Timothy Obrien 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
- Bozeman Health Big Sky Medical CenterBig Sky, MT · Critical Access Hospital · CCN 271389
- Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospital · CCN 270057
- Livingston HealthcareLivingston, MT · Critical Access Hospital · CCN 271317
- Madison Valley Medical CenterEnnis, MT · Critical Access Hospital · CCN 271329
Practice locations
Addresses where Timothy Obrien is enrolled with Medicare (CMS data updated 2026-10-02).
- 536 S Cottonwood Rd, 100 Alpine Orthopedics and Sports MedicineBozeman, MT 59718 (406) 586‑8029
Group practices
Medicare enrollment lists Timothy Obrien as a member of this group (CMS data updated 2026-10-02).
- Alpine Orthopedics and Sports Medicine10 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Bozeman
Clinicians with the same Medicare primary specialty in Bozeman, MT — not a recommendation.
Clinician information
| Medical school | Warren Alpert Medical School Of Brown University |
|---|---|
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922008374 |
| 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