Quick answers
- Which hospitals does Charles M. Harmon work at?
- Medicare's official clinician data lists Charles M. Harmon at 3 hospitals: Barrett Hospital & Healthcare, Billings Clinic Hospital and St Peters Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Charles M. Harmon see patients?
- Medicare's clinician data lists 1 practice location in Helena, MT. Call before your visit to confirm the address.
- What is Charles M. Harmon's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Charles M. Harmon accept Medicare assignment?
- Yes. Medicare's clinician data says Charles M. Harmon 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 Charles M. Harmon?
- (406) 502-1541, as listed in official Medicare / NPI Registry data.
- What is Charles M. Harmon's NPI number?
- 1659666923. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Charles M. Harmon works
Medicare's Facility Affiliation Data lists Charles M. Harmon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barrett Hospital & HealthcareDillon, MT · Critical Access Hospital · CCN 271318
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- St Peters HealthHelena, MT · Acute Care Hospital · CCN 270003
Practice locations
Addresses where Charles M. Harmon is enrolled with Medicare (CMS data updated 2026-10-02).
- 2475 E Broadway StHelena, MT 59601 (406) 502‑1541
Group practices
Medicare enrollment lists Charles M. Harmon as a member of this group (CMS data updated 2026-10-02).
- Helena Laboratory Physicians2 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Carolina At Chapel Hill School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659666923 |
| 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