Ha Son Nguyen MD
NPI 1437782398 · Neurological Surgery Physician · Thousand Oaks, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ha Son Nguyen MD is a Neurological Surgery Physician organization in Thousand Oaks, CA (NPI 1437782398).
Provider details
- NPI number
- 1437782398
- Entity type
- Organization
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ha Nguyen, Owner(530) 220-2521
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
6 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
- 2020-02-19
- Last updated
- 2020-02-19
- Certified
- 2020-02-19
Frequently asked questions
- What is Ha Son Nguyen MD's NPI number?
- Ha Son Nguyen MD's National Provider Identifier (NPI) is 1437782398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ha Son Nguyen MD?
- Ha Son Nguyen MD is classified in the NPPES registry as Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ha Son Nguyen MD located?
- Ha Son Nguyen MD's practice location on file with NPPES is 227 W Janss Rd Ste 125, Thousand Oaks, CA 91360-1856.
- What is Ha Son Nguyen MD's phone number?
- The practice phone number listed in the NPPES registry for Ha Son Nguyen MD is (805) 372-1679.
- Does Ha Son Nguyen MD accept Medicare?
- Ha Son Nguyen MD is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ha Son Nguyen MD?
- The authorized official listed on Ha Son Nguyen MD's NPPES record is Ha Nguyen, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ha Son Nguyen MD's NPI active?
- Yes — Ha Son Nguyen MD's NPI (1437782398) is active in the NPPES registry as of the last update on 2020-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.