Roy Zimmer, MD
NPI 1780609958 · Diagnostic Radiology Physician · Missoula, MT
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Zimmer, MD is a Diagnostic Radiology Physician provider in Missoula, MT (NPI 1780609958).
Provider details
- NPI number
- 1780609958
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 8077 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,182 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Screening 3d Breast Mammography77063 | 440 | $27 |
| Screening Mammography77067 | 440 | $35 |
| Screening Mammography77067 | 232 | $109 |
| Screening 3d Breast Mammography77063 | 220 | $46 |
| X-Ray of Chest, 2 Views71046 | 126 | $10 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 84 | $82 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Roy Zimmer's NPI number?
- Roy Zimmer's National Provider Identifier (NPI) is 1780609958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Zimmer's specialty?
- Roy Zimmer is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Zimmer located?
- Roy Zimmer's practice location on file with NPPES is 3205 S Russell St, Missoula, MT 59801-8536.
- What is Roy Zimmer's phone number?
- The practice phone number listed in the NPPES registry for Roy Zimmer is (406) 721-4906.
- Does Roy Zimmer accept Medicare?
- Roy Zimmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy Zimmer's NPI active?
- Yes — Roy Zimmer's NPI (1780609958) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.