AUSTIN HUY NGUYEN MD
NPI 1083109797
Anesthesiology in Orange, CA
About Austin Huy Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AUSTIN HUY NGUYEN MD (NPI 1083109797) is an individual anesthesiology provider in Orange, California, licensed in California (3593-8580) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS and is a graduate of Creighton University School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses
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
Austin Huy Nguyen Md 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 Austin 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
- 420 clinicians in this Medicare group
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
- 30 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
ORANGE, CA 92868
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 Austin Nguyen's NPI number?
The NPI number for Austin Nguyen is 1083109797. It was assigned to this individual provider in the NPPES registry on June 25, 2018.
Where is Austin Nguyen located?
Austin Nguyen practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-6661.
What is Austin Nguyen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Austin Nguyen enrolled in Medicare?
Yes. Austin 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 Austin Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Austin Nguyen reassigns Medicare benefits to 3 organizations: Regents Of The University Of (Orange, CA), Permanente Medical Group Inc (Santa Clara, CA) and Alameda Anesthesia Associates Medical Group, Inc (Castro Valley, 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 Austin 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 Austin Nguyen was last updated on March 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Austin Huy Nguyen, MD · NPI 1083109797
Anesthesiology physician in Orange, California. Individual provider, active in the CMS NPPES registry since June 25, 2018.
## Identity
- **NPI:** 1083109797 (Entity type: Individual)
- **Enumerated:** June 25, 2018
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 3593-8580 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-6661
## 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 (NPI 1487602546, Orange, CA); Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA); Alameda Anesthesia Associates Medical Group, Inc (NPI 1487602256, Castro Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Creighton University School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** March 20, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1083109797) · Data from the CMS NPPES public registry.