Thien Nguyen, M.D.
NPI 1477872505 · Critical Care Medicine (Internal Medicine) Physician · Katy, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thien Nguyen, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Katy, TX (NPI 1477872505).
Provider details
- NPI number
- 1477872505
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- Q9696 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
656 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 235 | $117 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 204 | $77 |
| Critical Care, First 30-74 Minutes99291 | 156 | $205 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 30 | $129 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 17 | $168 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 114 | 27 |
| Budesonide/Glycopyr/Formoterolbrand: Breztri Aerosphere | 43 | 13 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 33 | — |
| Methylprednisolone | 20 | 13 |
| Azithromycin | 18 | 13 |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 14 | — |
| Prednisone |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$306 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 600 Elizabeth StCorpus Christi, TX 78404-2235Phone: (361) 881-3000Fax: (361) 881-3149
- 1401 St Joseph PkwyHouston, TX 77002-8301Phone: (850) 607-3641
Registry dates
- Enumerated
- 2010-05-28
- Last updated
- 2024-08-12
- Certified
- 2024-08-12
Frequently asked questions
- What is Thien Nguyen's NPI number?
- Thien Nguyen's National Provider Identifier (NPI) is 1477872505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thien Nguyen's specialty?
- Thien Nguyen is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Thien Nguyen located?
- Thien Nguyen's practice location on file with NPPES is Po Box 475, Katy, TX 77492-0475.
- What is Thien Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thien Nguyen is (281) 703-3020.
- Does Thien Nguyen accept Medicare?
- Thien Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thien Nguyen's NPI active?
- Yes — Thien Nguyen's NPI (1477872505) is active in the NPPES registry as of the last update on 2024-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.