DR. PETER THANHTUNG NGUYEN D.O.
NPI 1871933366
Emergency Medicine in Irvine, CA
About Dr. Peter Thanhtung Nguyen D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PETER THANHTUNG NGUYEN D.O. (NPI 1871933366) is an individual emergency medicine provider in Irvine, California, licensed in California (20A14978) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2013).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
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
Dr. Peter Thanhtung Nguyen D.o. 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
7Medicare enrollment records show Peter Nguyen reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 1,204 clinicians in this Medicare group
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1316979834 (California)
- 13,921 clinicians in this Medicare group
Whittier, CA 90605
- Reassigned Medicare billing, California enrollment
- 80 clinicians in this Medicare group
Perris, CA 92571
- Reassigned Medicare billing, California enrollment
- 126 clinicians in this Medicare group
Duarte, CA 91010
- Reassigned Medicare billing, California enrollment
- 1,335 clinicians in this Medicare group
Oakland, CA 94609
- Reassigned Medicare billing, California enrollment
- 62 clinicians in this Medicare group
Tacoma, WA 98405
- Reassigned Medicare billing, California enrollment
- 20 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92618 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IRVINE, CA 92618
IRVINE, CA 92618
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 Peter Nguyen's NPI number?
The NPI number for Peter Nguyen is 1871933366. It was assigned to this individual provider in the NPPES registry on June 27, 2013.
Where is Peter Nguyen located?
Peter Nguyen practices at 1000 Fivepoint, Irvine, CA 92618. The listed phone number is (888) 333-4673.
What is Peter Nguyen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Peter Nguyen enrolled in Medicare?
Yes. Peter 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 Peter Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Nguyen reassigns Medicare benefits to 7 organizations: Cep America - California (Laguna Hills, CA), Southern California Permanente Medical Group (Anaheim, CA), Gem Medical Group Corporation (Whittier, CA), North County Health Project Inc (Perris, CA), City Of Hope Medical Foundation (Duarte, CA) and 2 more organizations, listed in the Medicare section above. 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 Peter Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Peter Nguyen accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Peter Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Peter Nguyen was last updated on November 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Peter Thanhtung Nguyen, D.O. · NPI 1871933366
Emergency Medicine physician in Irvine, California. Individual provider, active in the CMS NPPES registry since June 27, 2013.
## Identity
- **NPI:** 1871933366 (Entity type: Individual)
- **Enumerated:** June 27, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 20A14978 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 FIVEPOINT, Irvine, CA 92618-2377
- **Phone:** (888) 333-4673
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Cep America - California (NPI 1871534966, Laguna Hills, CA); Southern California Permanente Medical Group (NPI 1952333460, Anaheim, CA); Gem Medical Group Corporation (NPI 1689364721, Whittier, CA); North County Health Project Inc (NPI 1417321746, Perris, CA); City Of Hope Medical Foundation (NPI 1871886366, Duarte, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2013
## Record status
- **NPPES last updated:** November 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1871933366) · Data from the CMS NPPES public registry.