Quick answers
- Does Chi-Tam P. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Chi-Tam P. Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Chi-Tam P. Nguyen see?
- In 2024, CMS data shows 408 Original Medicare patients and 773 services for Chi-Tam P. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Chi-Tam P. Nguyen's NPI number?
- 1639630031. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Chi-Tam P. Nguyen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 408 |
|---|---|
| Services billed to Medicare | 773 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)262 services
- Emergency department visit with high level of medical decision making (99285)191 services
- Critical care, first 30-74 minutes (99291)152 services
- Emergency department visit with moderate level of medical decision making (99284)64 services
- X-ray of chest, 1 view (71045)18 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Ischemic heart disease61%
- Chronic kidney disease52%
- Diabetes51%
Hospitals where Chi-Tam P. Nguyen works
Medicare's Facility Affiliation Data lists Chi-Tam P. Nguyen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Houston Methodist Baytown HospitalBaytown, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450424
- Houston Methodist Clear Lake HospitalNassau Bay, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450709
Practice locations
Addresses where Chi-Tam P. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 6565 Fannin StHouston, TX 77030 (713) 790‑3311
Group practices
Medicare enrollment lists Chi-Tam P. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Travis County Emergency Physicians PA327 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Travis County Emergency Physicians PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639630031 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians