NPPES file of Aug 9, 2026

Tam T. Nguyen, MD

Radiation Oncology Physician · Mesa, AZ

Tam T. Nguyen, MD is a radiation oncology physician with a practice address in Mesa, Arizona, and NPI 1437128113, issued on Mar 16, 2006. Check the license (Arizona 26276, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1437128113
Name
Tam T. Nguyen
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
26276 AZ
Self-reported in NPPES; status is on the state search
Practice location
6111 E Arbor Ave, Mesa, AZ 85206
Phone
(480) 981-1326
Enumerated
Mar 16, 2006
Record last updated
Nov 17, 2022
Fax
(480) 981-1445
Medicare enrollment
Enrolled (PECOS I20180125001283); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 6111 E Arbor Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brandon Anderson, M.D.Surgery Physician1013335082
  2. Pranshu Bansal, MDHematology & Oncology Physician1447548722
  3. Ronik BhangooRadiation Oncology Physician1760877393
  4. Patrick Blackburn, MDGynecologic Oncology Physician1972999266
  5. Ashley Brown, DOSurgery Physician1265966238
  6. Megan Bruxer, NPGerontology Nurse Practitioner1346987336

Verify Tam T. Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 26276
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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4.4 times the Medicare Part D claims of the average radiation oncology physician in 2024

595 Medicare Part D claims for 189 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 129 claims were for opioids.

  1. Tam Nguyen595
  2. Specialty average134

Most prescribed

  1. Hydrocodone-Acetaminophen85 claims
  2. Ssd59 claims
  3. Tamsulosin Hcl50 claims
  4. Cephalexin45 claims
  5. Pentoxifylline40 claims
  6. Gabapentin28 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $2,415.37

108 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tam Nguyen$2,415.37
  2. Specialty average$1,897.85

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Ironwood Physicians PCMesa, AZ
  2. Select Physical Therapy OF West Denver Limited PartnershipWestminster, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Radiation Oncology Physician providers in Arizona

There are 156 radiation oncology physician records in Arizona.

Other radiation oncology physician records in Arizona

  1. Safia Ahmed, MDScottsdale, AZ1548609910
  2. Ashley AlbertPeoria, AZ1346668514
  3. Aaron Ambrad, MDScottsdale, AZ1265411961
  4. Hayden Ansinelli, MDTucson, AZ1821592791
  5. Jonathan Ashman, MDScottsdale, AZ1659337566
  6. Igor Barani, MDPhoenix, AZ1811105943
  7. Dolores Basden, M.D.Tucson, AZ1356310023
  8. David Beyer, MDSedona, AZ1114992252
  9. Ronik BhangooMesa, AZ1760877393
  10. Christopher Biggs, MDPhoenix, AZ1720042146

Common questions

What is Tam T. Nguyen, MD's NPI number?

Tam T. Nguyen, MD's National Provider Identifier (NPI) is 1437128113, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Tam T. Nguyen, MD located?

The NPPES record lists a practice address at 6111 E Arbor Ave, Mesa, AZ, 85206. Phone: (480) 981-1326. Providers update this record themselves, so call before visiting.

How can I verify Tam T. Nguyen, MD's license?

NPPES lists Arizona license number 26276, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Tam T. Nguyen, MD prescribe under Medicare Part D?

In 2024, Tam T. Nguyen, MD had 595 Medicare Part D claims for 189 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.