Tom Xu Tan, M.D.
Internal Medicine Physician · Phoenix, AZ
Tom Xu Tan, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1922285188, issued on Jan 29, 2008. Check the license (Arizona 81518, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tom Xu Tan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 81518 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5777 E Mayo Blvd, Phoenix, AZ 85054
- Phone
- (480) 515-6296
- Enumerated
- Jan 29, 2008
- Record last updated
- Jan 29, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100925000377); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 5777 E Mayo Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sophia Aguirre, MDEmergency Medicine Physician1285384859
- Erin Alexander, MS, MSGenetic Counselor (M.S.)1487541595
- Nneoma Alozie, MDInternal Medicine Physician1912642695
Verify Tom Xu Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 81518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
60 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Acute Care Associates OF California PCWildomar, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tom Xu Tan among 2,853 internal medicine physician records in Arizona
Tom Xu Tan, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 43% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2007 · median 2003 among the 1,643 with a school on file
- Record last updated2008 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Neera Agrwal, M.D.Phoenix, AZ 850541992780522
- Nneoma Alozie, MDPhoenix, AZ 850541912642695
- Gary Betz, MDPhoenix, AZ 850541518959527
- Cody Cunningham, MD, PHDPhoenix, AZ 850541700519899
- John Demenkoff, M.D.Phoenix, AZ 850541295718419
- Susan Hagstrom, M.D.Phoenix, AZ 850541235112061
- Georgiana Halterman, M.D.Phoenix, AZ 850541245214816
- Lisa Hurst, M.D.Phoenix, AZ 850541417930132
Common questions
What is Tom Xu Tan, M.D.'s NPI number?
Tom Xu Tan, M.D.'s National Provider Identifier (NPI) is 1922285188, issued on Jan 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Tom Xu Tan, M.D. located?
The NPPES record lists a practice address at 5777 E Mayo Blvd, Phoenix, AZ, 85054. Phone: (480) 515-6296. Providers update this record themselves, so call before visiting.
How can I verify Tom Xu Tan, M.D.'s license?
NPPES lists Arizona license number 81518, 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 Tom Xu Tan, M.D. prescribe under Medicare Part D?
In 2024, Tom Xu Tan, M.D. had 60 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.