HA SON NGUYEN M.D.
NPI 1447275631
Obstetrics & Gynecology in Garden Grove, CA
About Ha Son Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HA SON NGUYEN M.D. (NPI 1447275631) is an individual obstetrics & gynecology provider in Garden Grove, California, licensed in California (G67118) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Long Beach, and is a graduate of Northwestern University Feinberg Medical School (1986).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ha Son Nguyen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Ha Nguyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 149 clinicians in this Medicare group
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
- 191 clinicians in this Medicare group
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92843 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ha Nguyen's NPI number?
The NPI number for Ha Nguyen is 1447275631. It was assigned to this individual provider in the NPPES registry on July 12, 2006.
Where is Ha Nguyen located?
Ha Nguyen practices at 13481 Euclid St Ste A, Garden Grove, CA 92843. The listed phone number is (714) 468-6755.
What is Ha Nguyen's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Ha Nguyen enrolled in Medicare?
Yes. Ha Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ha Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ha Nguyen reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (Orange, CA), Magella Medical Group, Inc. (Long Beach, CA) and Son-Ha And Diem-Chi A Medical Corp (Long Beach, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ha Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ha Nguyen was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ha Son Nguyen, M.D. · NPI 1447275631
Obstetrics & Gynecology physician in Garden Grove, California. Individual provider, active in the CMS NPPES registry since July 12, 2006.
## Identity
- **NPI:** 1447275631 (Entity type: Individual)
- **Enumerated:** July 12, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** G67118 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 13481 EUCLID ST STE A, Garden Grove, CA 92843-2546
- **Phone:** (714) 468-6755
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1356304034, Orange, CA); Magella Medical Group, Inc. (NPI 1376640086, Long Beach, CA); Son-Ha And Diem-Chi A Medical Corp (NPI 1508895871, Long Beach, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 1986
## Record status
- **NPPES last updated:** August 3, 2026
- **Other identifiers:** Medicaid 00G671180 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1447275631) · Data from the CMS NPPES public registry.