DR. JAMES NGUYEN M.D.
NPI 1679880934
Anesthesiology in Orange, CA
About Dr. James Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES NGUYEN M.D. (NPI 1679880934) is an individual anesthesiology provider in Orange, California, licensed in California (A111965) and active in the NPI registry since September 2010. He is enrolled in Medicare PECOS.
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 (PECOS)
Dr. James Nguyen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show James 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 92869
- Reassigned Medicare billing, California enrollment
- 168 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 63 clinicians in this Medicare group
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 76 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 2
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.
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 92869
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 James Nguyen's NPI number?
The NPI number for James Nguyen is 1679880934. It was assigned to this individual provider in the NPPES registry on September 8, 2010.
Where is James Nguyen located?
James Nguyen practices at 2601 E Chapman Ave, Orange, CA 92869. The listed phone number is (111) 111-1111.
What is James Nguyen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is James Nguyen enrolled in Medicare?
Yes. James Nguyen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for James Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Nguyen reassigns Medicare benefits to 3 organizations: Orange Coast Anesthesia Inc (Orange, CA), Talbert Anesthesia Group Incorporated (Los Alamitos, CA) and Socal Anesthesia Solutions, Inc (Los Angeles, 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 James 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 James Nguyen was last updated on October 11, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.