Brian Nagai, M.D.
NPI 1467493536 · Diagnostic Radiology Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Nagai, M.D. is a Diagnostic Radiology Physician provider in Fremont, CA (NPI 1467493536).
Provider details
- NPI number
- 1467493536
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 12221 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
2,059 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, 2 Views71046 | 203 | $44 |
| Ct Scan of Chest Without Contrast71250 | 137 | $175 |
| Limited Ultrasound Scan of Abdomen76705 | 92 | $112 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 84 | $244 |
| Mri Scan of Brain Before and After Contrast70553 | 81 | $417 |
| Ct Scan Head Or Brain Without Contrast70450 | 79 | $133 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2020-05-29
- Certified
- 2020-05-29
Frequently asked questions
- What is Brian Nagai's NPI number?
- Brian Nagai's National Provider Identifier (NPI) is 1467493536, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Nagai's specialty?
- Brian Nagai is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Nagai located?
- Brian Nagai's practice location on file with NPPES is 3200 Kearney St., Fremont, CA 94538.
- What is Brian Nagai's phone number?
- The practice phone number listed in the NPPES registry for Brian Nagai is (510) 490-1222.
- Does Brian Nagai accept Medicare?
- Brian Nagai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Nagai's NPI active?
- Yes — Brian Nagai's NPI (1467493536) is active in the NPPES registry as of the last update on 2020-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.