John Nguyen, M.D.
NPI 1679958953 · Diagnostic Radiology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Nguyen, M.D. is a Diagnostic Radiology Physician provider in Sacramento, CA (NPI 1679958953).
Provider details
- NPI number
- 1679958953
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301108186 (MI)
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
10 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
2,886 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 | 916 | $59 |
| Screening Mammography77067 | 915 | $148 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 157 | $53 |
| Diagnostic Mammography of 1 Breast77065 | 147 | $142 |
| X-Ray of Chest, 1 View71045 | 137 | $9 |
| Limited Ultrasound Scan of 1 Breast76642 | 128 | $100 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-07-28
- Last updated
- 2026-04-10
- Certified
- 2026-04-10
Frequently asked questions
- What is John Nguyen's NPI number?
- John Nguyen's National Provider Identifier (NPI) is 1679958953, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Nguyen's specialty?
- John Nguyen is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Nguyen located?
- John Nguyen's practice location on file with NPPES is 3161 L St, Sacramento, CA 95816-5234.
- What is John Nguyen's phone number?
- The practice phone number listed in the NPPES registry for John Nguyen is (185) 577-1033.
- Does John Nguyen accept Medicare?
- John Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Nguyen's NPI active?
- Yes — John Nguyen's NPI (1679958953) is active in the NPPES registry as of the last update on 2026-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.