NPPES file of Aug 9, 2026

Allen Si-Liang Zhou, MD

Otolaryngology Physician · Stanford, CA

Allen Si-Liang Zhou, MD is an otolaryngology physician with a practice address in Stanford, California, and NPI 1407435910, issued on Apr 3, 2021. Check the license (California A206782, 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
1407435910
Name
Allen Si-Liang Zhou
Credential
MD
Primary taxonomy
Otolaryngology Physician 207Y00000X
License numbers
A206782 CA
288574 MA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(650) 723-4000
Enumerated
Apr 3, 2021
Record last updated
Jul 1, 2026
Medicare enrollment
Enrolled (PECOS I20260519003514); may accept Medicare assignment
Medical or professional school
Harvard Medical School, 2021
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 300 Pasteur Dr

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

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Allen Si-Liang Zhou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A206782
    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

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87% fewer Medicare Part D claims than the average otolaryngology physician in 2024

70 Medicare Part D claims for 51 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 17 claims were for opioids.

  1. Allen Zhou70
  2. Specialty average541

Most prescribed

  1. Oxycodone Hcl17 claims
  2. Cephalexin13 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 Si-Liang Zhou among 1,212 otolaryngology physician records in California

Allen Si-Liang Zhou, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 95% of them.

  • NPI issued2021 · 95% of these records are older, 3% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated2021 · median 2004 among the 818 with a school on file
  • Record last updated2026 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

47 otolaryngology physician records list a practice address in Stanford

They are 47 of the 5,606 NPPES records with a practice address in Stanford, and 1,212 otolaryngology physician records in California.

The 8 otolaryngology physician records with the nearest ZIP codes

  1. Edward Damrose, MDStanford, CA 943051851314702
  2. Robert Jackler, MDStanford, CA 943051568502839
  3. Nancy JiangStanford, CA 943051740424043
  4. Benzion Joshua, M.D.Palo Alto, CA 943051538193792
  5. Michael Kaplan, M.D.Stanford, CA 943051851437131
  6. Frank Lin, MD, PHDStanford, CA 943051619015229
  7. I-Fan Mau, MD, PHDStanford, CA 943051780718791
  8. Uchechukwu Megwalu, MDStanford, CA 943051730370941

Common questions

What is Allen Si-Liang Zhou, MD's NPI number?

Allen Si-Liang Zhou, MD's National Provider Identifier (NPI) is 1407435910, issued on Apr 3, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Allen Si-Liang Zhou, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Allen Si-Liang Zhou, MD's license?

NPPES lists California license number A206782, 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 Allen Si-Liang Zhou, MD prescribe under Medicare Part D?

In 2024, Allen Si-Liang Zhou, MD had 70 Medicare Part D claims for 51 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.