TAM M NGUYEN MD
NPI 1962645119
Emergency Medicine in Oklahoma City, OK
About Tam M Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAM M NGUYEN MD (NPI 1962645119) is an individual emergency medicine provider in Oklahoma City, Oklahoma, licensed in Texas (P2149) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS, is affiliated with O U Medical Center, and maintains a secondary practice location in Dallas.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 3
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
Tam M 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 Tam Nguyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73104
- Reassigned Medicare billing, Oklahoma enrollment
- 1,795 clinicians in this Medicare group
Oklahoma City, OK 73134
- Reassigned Medicare billing, Oklahoma enrollment
- 1,058 clinicians in this Medicare group
Norman, OK 73071
- Reassigned Medicare billing, Oklahoma enrollment
- 418 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
O U Medical Center
Acute Care Hospitals · Oklahoma City, OKUt Southwestern University Hospital - William P. Clements Jr.
Acute Care Hospitals · Dallas, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73112 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
OKLAHOMA CITY, OK 73112
OKLAHOMA CITY, OK 73112
OKLAHOMA CITY, OK 73112
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 Tam Nguyen's NPI number?
The NPI number for Tam Nguyen is 1962645119. It was assigned to this individual provider in the NPPES registry on April 16, 2009.
Where is Tam Nguyen located?
Tam Nguyen practices at 3300 NW Expressway, Oklahoma City, OK 73112. The listed phone number is (405) 951-5241.
What is Tam Nguyen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Tam Nguyen enrolled in Medicare?
Yes. Tam 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 Tam Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tam Nguyen reassigns Medicare benefits to 3 organizations: Ou Health Partners, Inc (Oklahoma City, OK), Integris Ambulatory Care Corporation (Oklahoma City, OK) and Emergency Services Of Oklahoma PC (Norman, OK). 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 Tam Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tam Nguyen accept?
Health plans from Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Mending Health list Tam 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.
Is Tam Nguyen affiliated with any hospitals?
According to CMS data, Tam Nguyen is affiliated with O U Medical Center and Ut Southwestern University Hospital - William P. Clements Jr..
When was this NPI record last updated?
The NPPES record for Tam Nguyen was last updated on November 30, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Tam M Nguyen, MD · NPI 1962645119
Emergency Medicine physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since April 16, 2009.
## Identity
- **NPI:** 1962645119 (Entity type: Individual)
- **Enumerated:** April 16, 2009
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** P2149 (Texas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3300 NW EXPRESSWAY, Oklahoma City, OK 73112-4418
- **Phone:** (405) 951-5241
## 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): Ou Health Partners, Inc (NPI 1528642642, Oklahoma City, OK); Integris Ambulatory Care Corporation (NPI 1750333936, Oklahoma City, OK); Emergency Services Of Oklahoma PC (NPI 1215249891, Norman, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Oklahoma College Of Medicine, class of 2009
## Record status
- **NPPES last updated:** November 30, 2017
- **Other identifiers:** Medicaid 298443701 (TX); Other P01112228 (TX); Medicare PIN TXB154102 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1962645119) · Data from the CMS NPPES public registry.