Quick answers
- Which hospitals does Roy Kohler work at?
- Medicare's official clinician data lists Roy Kohler at 1 hospital: Central Montana Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Roy Kohler see patients?
- Medicare's clinician data lists 6 practice locations, including Billings, MT, Hardin, MT and Havre, MT. Call before your visit to confirm the address.
- What is Roy Kohler's specialty?
- Medicare lists Sleep Medicine as the primary specialty, and also Internal Medicine.
- Does Roy Kohler accept Medicare assignment?
- Yes. Medicare's clinician data says Roy Kohler 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 Roy Kohler?
- (406) 237-8270, as listed in official Medicare / NPI Registry data.
- What is Roy Kohler's NPI number?
- 1215933676. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Roy Kohler works
Medicare's Facility Affiliation Data lists Roy Kohler at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Central Montana Medical CenterLewistown, MT · Critical Access Hospital · CCN 271345
Practice locations
Addresses where Roy Kohler is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1233 N 30th StBillings, MT 59101
- 16 N Miles Ave, Suite 101Hardin, MT 59034 (406) 237‑8270
- 2900 12th Ave N, Suite 500eBillings, MT 59101 (406) 238‑6800
- 30 13th StHavre, MT 59501 (406) 265‑2211
- 500 W Broadway StMissoula, MT 59802 (406) 329‑5828
Group practices
Medicare enrollment lists Roy Kohler as a member of these groups (CMS data updated 2026-10-02).
- Providence Health and Services Mt362 clinicians in the group
- SCL Health Medical Group - Billings LLC297 clinicians in the group
- Northern Montana Hospital47 clinicians in the group
Specialties
- Sleep Medicineprimary
- Internal Medicinealso
Other sleep medicine doctors in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215933676 |
| 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