DR. THIENDANG VIET NGUYEN M.D.
NPI 1003056995
Anesthesiology in Los Angeles, CA
About Dr. Thiendang Viet Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THIENDANG VIET NGUYEN M.D. (NPI 1003056995) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A99080) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Dr. Thiendang Viet 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
5Medicare enrollment records show Thiendang Nguyen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90063
- Reassigned Medicare billing, California enrollment
- 1,939 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 63 clinicians in this Medicare group
Camarillo, CA 93010
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 270 clinicians in this Medicare group
Ventura, CA 93003
- Reassigned Medicare billing, California enrollment
- 29 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.
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.
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Thiendang Nguyen's NPI number?
The NPI number for Thiendang Nguyen is 1003056995. It was assigned to this individual provider in the NPPES registry on March 4, 2009. The provider is also known as Dr. Thien-Dang Viet Nguyen M.D..
Where is Thiendang Nguyen located?
Thiendang Nguyen practices at 1200 N State St #14-901, Los Angeles, CA 90033. The listed phone number is (323) 409-7748.
What is Thiendang Nguyen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Thiendang Nguyen enrolled in Medicare?
Yes. Thiendang 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 Thiendang Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thiendang Nguyen reassigns Medicare benefits to 5 organizations: County Of Los Angeles (Los Angeles, CA), Talbert Anesthesia Group Incorporated (Los Alamitos, CA), Julie Tran Nguyen MD Inc (Camarillo, CA), Palm Springs Anesthesia Services, PC (San Bernardino, CA) and Ventura County Anesthesia Medical Group, Inc. (Ventura, 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 Thiendang 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 Thiendang Nguyen was last updated on September 11, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Dr. Thiendang Viet Nguyen, M.D. · NPI 1003056995
Anesthesiology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 4, 2009.
## Identity
- **NPI:** 1003056995 (Entity type: Individual)
- **Enumerated:** March 4, 2009
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A99080 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1200 N STATE ST, #14-901, Los Angeles, CA 90033-1029
- **Phone:** (323) 409-7748
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): County Of Los Angeles (NPI 1679061592, Los Angeles, CA); Talbert Anesthesia Group Incorporated (NPI 1144626714, Los Alamitos, CA); Julie Tran Nguyen MD Inc (NPI 1831571280, Camarillo, CA); Palm Springs Anesthesia Services, PC (NPI 1083928501, San Bernardino, CA); Ventura County Anesthesia Medical Group, Inc. (NPI 1679837645, Ventura, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** September 11, 2009
- **Other identifiers:** Medicare PIN CD284Z (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1003056995) · Data from the CMS NPPES public registry.