Irwin Maier, M.D.
NPI 1275538431 · Diagnostic Radiology Physician · Red Bluff, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irwin Maier, M.D. is a Diagnostic Radiology Physician provider in Red Bluff, CA (NPI 1275538431).
Provider details
- NPI number
- 1275538431
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A61466 (CA)
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
21 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
7,646 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,031 | $8 |
| X-Ray of Chest, 2 Views71046 | 642 | $10 |
| Ct Scan Head Or Brain Without Contrast70450 | 412 | $39 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 305 | $85 |
| Screening Mammography77067 | 240 | $35 |
| Screening 3d Breast Mammography77063 | 239 | $28 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-15
- Last updated
- 2017-01-09
Frequently asked questions
- What is Irwin Maier's NPI number?
- Irwin Maier's National Provider Identifier (NPI) is 1275538431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irwin Maier's specialty?
- Irwin Maier is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Irwin Maier located?
- Irwin Maier's practice location on file with NPPES is 21320 Penneleme Rd, Red Bluff, CA 96080-7992.
- What is Irwin Maier's phone number?
- The practice phone number listed in the NPPES registry for Irwin Maier is (952) 595-1100.
- Does Irwin Maier accept Medicare?
- Irwin Maier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irwin Maier's NPI active?
- Yes — Irwin Maier's NPI (1275538431) is active in the NPPES registry as of the last update on 2017-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.