NPPES file of Aug 9, 2026

Allen S. Tu, PAC

Physician Assistant · San Francisco, CA

Allen S. Tu, PAC is a physician assistant with a practice address in San Francisco, California, and NPI 1992021091, issued on Apr 14, 2010. Check the license (California PA59493, as entered in NPPES) with the California board that licenses this profession; 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
1992021091
Name
Allen S. Tu
Credential
PAC
Primary taxonomy
Physician Assistant 363A00000X
License numbers
PA59493 CA
PA60135305 WA
Self-reported in NPPES; status is on the state search
Practice location
2 Embarcadero Ctr Lbby Level, San Francisco, CA 94111
Phone
(415) 578-3100
Enumerated
Apr 14, 2010
Record last updated
Mar 14, 2025
Fax
(415) 252-7176
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2 Embarcadero Ctr Lbby Level

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

  1. Susan AdamNurse Practitioner1033530811
  2. Julie Ahlrich, FNP-BCFamily Nurse Practitioner1780802629
  3. Ann Ala, NPFamily Nurse Practitioner1083948012
  4. Jennifer Alexander, FNPFamily Nurse Practitioner1205179249
  5. Sameerah Ali, FNP-BCNurse Practitioner1558531566
  6. Amanda Anderson, P.A.Physician Assistant1104292267

Verify Allen S. Tu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA59493
    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
Find 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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64% fewer Medicare Part D claims than the average physician assistant in 2024

301 Medicare Part D claims for 168 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Allen Tu301
  2. Specialty average830

Most prescribed

  1. Atorvastatin Calcium22 claims
  2. Levothyroxine Sodium18 claims
  3. Gabapentin14 claims
  4. Losartan Potassium12 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.

Allen S. Tu among 14,451 physician assistant records in California

Allen S. Tu, PAC is one of 14,451 physician assistant records with a practice address in California. 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 2010, is newer than 27% of them.

  • NPI issued2010 · 27% of these records are older, 70% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2025 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Caroline Ahlquist, PA-CSan Francisco, CA 941111467524579
  2. Bodhi Anderson, PACSan Francisco, CA 941111730384942
  3. Joshua Borgstadt, PA-CSan Francisco, CA 941111417097155
  4. Karen Dress, PA-CSan Francisco, CA 941111013123157
  5. Cuyla Dudley, PA-C, ATCSan Francisco, CA 941111467426056
  6. Ashley Gregory, P.A.San Francisco, CA 941111255371746
  7. Amee Koch, PA-CSan Francisco, CA 941111013932094
  8. Danielle MartinoSan Francisco, CA 941111659549152

Common questions

What is Allen S. Tu, PAC's NPI number?

Allen S. Tu, PAC's National Provider Identifier (NPI) is 1992021091, issued on Apr 14, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Allen S. Tu, PAC located?

The NPPES record lists a practice address at 2 Embarcadero Ctr Lbby Level, San Francisco, CA, 94111. Phone: (415) 578-3100. Providers update this record themselves, so call before visiting.

How can I verify Allen S. Tu, PAC's license?

NPPES lists California license number PA59493, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Allen S. Tu, PAC prescribe under Medicare Part D?

In 2024, Allen S. Tu, PAC had 301 Medicare Part D claims for 168 beneficiaries; the average among physician assistant prescribers was 830. 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.