Long Nguyen, MD
NPI 1598909335 · Emergency Medicine Physician · Flower Mound, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Long Nguyen, MD is a Emergency Medicine Physician provider in Flower Mound, TX (NPI 1598909335).
Provider details
- NPI number
- 1598909335
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- Q0327 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
596 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 | 254 | $168 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 166 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 139 | $116 |
| Critical Care, First 30-74 Minutes99291 | 26 | $205 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 11 | $69 |
Typical Medicare-allowed amounts for these services range $8–$205 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 90 | 82 |
| Tramadol Hcl | 35 | 35 |
| Ibuprofen | 23 | 23 |
| Naproxen | 23 | 23 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 21 | 20 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 20 | 20 |
| Prednisone |
Practice location
Mailing address
Additional practice locations (1)
- 6300 La Calma Dr Ste 200Austin, TX 78752-3825Phone: (714) 858-0279
Registry dates
- Enumerated
- 2009-04-23
- Last updated
- 2022-01-07
- Certified
- 2022-01-07
Frequently asked questions
- What is Long Nguyen's NPI number?
- Long Nguyen's National Provider Identifier (NPI) is 1598909335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Long Nguyen's specialty?
- Long Nguyen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Long Nguyen located?
- Long Nguyen's practice location on file with NPPES is 4400 Long Prairie Rd, Flower Mound, TX 75028-1892.
- What is Long Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Long Nguyen is (469) 322-7100.
- Does Long Nguyen accept Medicare?
- Long Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Long Nguyen's NPI active?
- Yes — Long Nguyen's NPI (1598909335) is active in the NPPES registry as of the last update on 2022-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.