NPPES file of Aug 9, 2026

Allan Zexiong Tang, MD

Family Medicine Physician · San Jose, CA

Allan Zexiong Tang, MD is a family medicine physician with a practice address in San Jose, California, and NPI 1245980200, issued on Mar 24, 2022. Check the license (California A189538, as entered in NPPES) on the Medical Board of California; 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
1245980200
Name
Allan Zexiong Tang
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A189538 CA
Self-reported in NPPES; status is on the state search
Practice location
746 The Alameda Ste 10, San Jose, CA 95126
Phone
(888) 663-6331
Enumerated
Mar 24, 2022
Record last updated
May 14, 2026
Fax
(415) 252-7176
Medicare enrollment
Enrolled (PECOS I20250129001275); accepts Medicare assignment
Medical or professional school
University Of Washington School Of Medicine, 2022
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 746 The Alameda Ste 10

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

  1. Hayley DoPhysician Assistant1902455272
  2. Sreelata KintalaFamily Medicine Physician1750725511
  3. Juyeon LeeFamily Medicine Physician1639584972
  4. Geraldin Romis, NP-C, RN, PA-CNurse Practitioner1053819961
  5. Yousuf Shamsie, DOFamily Medicine Physician1265969638

Verify Allan Zexiong Tang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A189538
    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 California 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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90% fewer Medicare Part D claims than the average family medicine physician in 2024

347 Medicare Part D claims for 95 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Allan Tang347
  2. Specialty average3,544

Most prescribed

  1. Fluticasone Propionate16 claims
  2. Gabapentin15 claims
  3. Atorvastatin Calcium13 claims
  4. Isosorbide Mononitrate Er12 claims
  5. Lisinopril12 claims
  6. Lisinopril-Hydrochlorothiazide12 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.

Bills Medicare through one group practice

  1. Bay Area Community HealthSan Jose, CA

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

Allan Zexiong Tang among 17,133 family medicine physician records in California

Allan Zexiong Tang, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.

  • NPI issued2022 · 94% of these records are older, 3% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2022 · median 2005 among the 10,652 with a school on file
  • Record last updated2026 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

265 family medicine physician records list a practice address in San Jose

They are 265 of the 20,925 NPPES records with a practice address in San Jose, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Sheetal Ankolekar, MDSan Jose, CA 951261689014755
  2. Laura Dalton, D.O.San Jose, CA 951261598085888
  3. Dorothy Furgerson, M.D.San Jose, CA 951261295767606
  4. Sreelata KintalaSan Jose, CA 951261750725511
  5. Juyeon LeeSan Jose, CA 951261639584972
  6. Timothy Liveright, M.D.San Jose, CA 951261306854591
  7. Richard Muller, M.D.San Jose, CA 951261326078627
  8. Yousuf Shamsie, DOSan Jose, CA 951261265969638

Common questions

What is Allan Zexiong Tang, MD's NPI number?

Allan Zexiong Tang, MD's National Provider Identifier (NPI) is 1245980200, issued on Mar 24, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Allan Zexiong Tang, MD located?

The NPPES record lists a practice address at 746 The Alameda Ste 10, San Jose, CA, 95126. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.

How can I verify Allan Zexiong Tang, MD's license?

NPPES lists California license number A189538, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Allan Zexiong Tang, MD prescribe under Medicare Part D?

In 2024, Allan Zexiong Tang, MD had 347 Medicare Part D claims for 95 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.