Duc Nguyen, M.D.
NPI 1255366928 · Internal Medicine Physician · Oceano, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duc Nguyen, M.D. is a Internal Medicine Physician provider in Oceano, CA (NPI 1255366928).
Provider details
- NPI number
- 1255366928
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A83670 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2025-02-20
- Certified
- 2025-02-20
Frequently asked questions
- What is Duc Nguyen's NPI number?
- Duc Nguyen's National Provider Identifier (NPI) is 1255366928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duc Nguyen's specialty?
- Duc Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Duc Nguyen located?
- Duc Nguyen's practice location on file with NPPES is 2120 Cienaga St, Oceano, CA 93445-9016.
- What is Duc Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Duc Nguyen is (805) 994-2100.
- Does Duc Nguyen accept Medicare?
- Duc Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duc Nguyen's NPI active?
- Yes — Duc Nguyen's NPI (1255366928) is active in the NPPES registry as of the last update on 2025-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.