TAMMY TAM NGUYEN D.O.
NPI 1699113829
Family Medicine in Beverly Hills, CA
About Tammy Tam Nguyen D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY TAM NGUYEN D.O. (NPI 1699113829) is an individual family medicine provider in Beverly Hills, California, licensed in California (20A14644) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Santa Ana, and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Tammy Tam 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 Reassignment
Medicare enrollment records show Tammy Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 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 90211 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.
BEVERLY HILLS, CA 90211
BEVERLY HILLS, CA 90211
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 Tammy Nguyen's NPI number?
The NPI number for Tammy Nguyen is 1699113829. It was assigned to this individual provider in the NPPES registry on June 10, 2013.
Where is Tammy Nguyen located?
Tammy Nguyen practices at 8767 Wilshire Blvd Fl 3, Beverly Hills, CA 90211. The listed phone number is (310) 385-6031.
What is Tammy Nguyen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Tammy Nguyen enrolled in Medicare?
Yes. Tammy 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 organization bills Medicare for Tammy Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Nguyen reassigns Medicare benefits to Cedars-Sinai Medical Care Foundation (Los Angeles, CA). The 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 Tammy 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 Tammy Nguyen was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Tammy Tam Nguyen, D.O. · NPI 1699113829
Family Medicine physician in Beverly Hills, California. Individual provider, active in the CMS NPPES registry since June 10, 2013.
## Identity
- **NPI:** 1699113829 (Entity type: Individual)
- **Enumerated:** June 10, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A14644 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 8767 WILSHIRE BLVD FL 3, Beverly Hills, CA 90211-2714
- **Phone:** (310) 385-6031
## 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:** Cedars-Sinai Medical Care Foundation (NPI 1043826720, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** July 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1699113829) · Data from the CMS NPPES public registry.