Dai Nguyen, MD
NPI 1396165502 · Emergency Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dai Nguyen, MD is a Emergency Medicine Physician provider in San Antonio, TX (NPI 1396165502).
Provider details
- NPI number
- 1396165502
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- BP10050095 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
353 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 142 | $170 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 101 | $117 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 79 | $8 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 31 | $69 |
Typical Medicare-allowed amounts for these services range $8–$170 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 46 | 46 |
| Meloxicam | 37 | 37 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 29 | 29 |
| Cefdinir | 19 | 19 |
| Cyclobenzaprine Hcl | 19 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 16 |
| Dicyclomine Hcl | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-04-27
- Last updated
- 2016-08-19
Frequently asked questions
- What is Dai Nguyen's NPI number?
- Dai Nguyen's National Provider Identifier (NPI) is 1396165502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dai Nguyen's specialty?
- Dai Nguyen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dai Nguyen located?
- Dai Nguyen's practice location on file with NPPES is 4502 Medical Dr, San Antonio, TX 78229-4402.
- What is Dai Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Dai Nguyen is (210) 567-7000.
- Does Dai Nguyen accept Medicare?
- Dai Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dai Nguyen's NPI active?
- Yes — Dai Nguyen's NPI (1396165502) is active in the NPPES registry as of the last update on 2016-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.