DAI NGUYEN MD
NPI 1396165502
Emergency Medicine in San Antonio, TX
About Dai Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAI NGUYEN MD (NPI 1396165502) is an individual emergency medicine provider in San Antonio, Texas, licensed in Texas (Q8582) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Texas Health Presbyterian Hospital Denton, and is a graduate of University Of Oklahoma College Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses 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
Dai 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
5Medicare enrollment records show Dai Nguyen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pearsall, TX 78061
- Reassigned Medicare billing, Texas enrollment
- 100 clinicians in this Medicare group
Fort Worth, TX 76112
- Reassigned Medicare billing, Texas enrollment
- 545 clinicians in this Medicare group
Fort Worth, TX 76112
- Reassigned Medicare billing, Texas enrollment
- 231 clinicians in this Medicare group
Dallas, TX 75246
- Reassigned Medicare billing, Texas enrollment
- 1,044 clinicians in this Medicare group
Longview, TX 75601
- Reassigned Medicare billing, Texas enrollment
- 154 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 4
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Texas Health Presbyterian Hospital Denton
Acute Care Hospitals · Denton, TXU S M D Hospital At Arlington L P
Acute Care Hospitals · Arlington, TXMethodist Southlake Medical Center
Acute Care Hospitals · Southlake, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78229 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.
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
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 Dai Nguyen's NPI number?
The NPI number for Dai Nguyen is 1396165502. It was assigned to this individual provider in the NPPES registry on April 27, 2014.
Where is Dai Nguyen located?
Dai Nguyen practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 567-7000.
What is Dai Nguyen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Dai Nguyen enrolled in Medicare?
Yes. Dai 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 Dai Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dai Nguyen reassigns Medicare benefits to 5 organizations: Frio Hospital Association (Pearsall, TX), Texas Medicine Resources, LLP (Fort Worth, TX), Texas Physician Resources, LLP (Fort Worth, TX), Century Integrated Partners, Inc (Dallas, TX) and Acute Care Specialists (Longview, TX). 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 Dai Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dai Nguyen accept?
Health plans from Blue Cross and Blue Shield of Texas list Dai 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 Dai Nguyen affiliated with any hospitals?
According to CMS data, Dai Nguyen is affiliated with Texas Health Presbyterian Hospital Denton, U S M D Hospital At Arlington L P and Methodist Southlake Medical Center.
When was this NPI record last updated?
The NPPES record for Dai Nguyen was last updated on August 19, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dai Nguyen, MD · NPI 1396165502
Emergency Medicine physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since April 27, 2014.
## Identity
- **NPI:** 1396165502 (Entity type: Individual)
- **Enumerated:** April 27, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** Q8582 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4502 MEDICAL DR, San Antonio, TX 78229-4402
- **Phone:** (210) 567-7000
## 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): Frio Hospital Association (NPI 1053195032, Pearsall, TX); Texas Medicine Resources, LLP (NPI 1376581900, Fort Worth, TX); Texas Physician Resources, LLP (NPI 1639413289, Fort Worth, TX); Century Integrated Partners, Inc (NPI 1447615711, Dallas, TX); Acute Care Specialists (NPI 1740655273, Longview, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Oklahoma College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** August 19, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1396165502) · Data from the CMS NPPES public registry.