Quick answers
- Does Tam T. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Tam T. 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 Tam T. Nguyen see?
- In 2024, CMS data shows 365 Original Medicare patients and 9,119 services for Tam T. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Tam T. Nguyen's NPI number?
- 1437128113. 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 Tam T. 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 | 365 |
|---|---|
| Services billed to Medicare | 9,119 |
| Different services or procedures | 47 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)3,675 services
- Ct guidance for insertion of radiation therapy fields (77014)1,151 services
- Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)933 services
- Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev (G6012)780 services
- Continuing radiation therapy consultation per week (77336)372 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- Arthritis42%
- Diabetes37%
- Ischemic heart disease35%
Practice locations
Addresses where Tam T. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 6111 E Arbor AveMesa, AZ 85206 (480) 981‑1326
- 8601 Turnpike DrWestminster, CO 80031 (303) 222‑4312
- 8601 Turnpike Dr, Suite 204Westminster, CO 80031 (303) 222‑4312
Group practices
Medicare enrollment lists Tam T. Nguyen as a member of these groups (CMS data updated October 2, 2026).
- Select Physical Therapy of West Denver Limited Partnership548 clinicians in the group
- Ironwood Physicians PC116 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Mesa
Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.
Other clinicians in Select Physical Therapy of West Denver Limited Partnership
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437128113 |
| 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
- 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