NPPES file of Aug 9, 2026

Alvin Li

Dermatology Physician · San Mateo, CA

Alvin Li is a dermatology physician with a practice address in San Mateo, California, and NPI 1225531007, issued on Mar 17, 2018. Check the license (California A176382, 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
1225531007
Name
Alvin Li
Primary taxonomy
Dermatology Physician 207N00000X
License numbers
A176382 CA
125.073474 IL
Self-reported in NPPES; status is on the state search
Practice location
136 N San Mateo Dr FL 2, San Mateo, CA 94401
Phone
(650) 348-1242
Enumerated
Mar 17, 2018
Record last updated
Dec 19, 2023
Fax
(650) 348-0788
Medicare enrollment
Enrolled (PECOS I20220615002064); accepts Medicare assignment
Medical or professional school
Yale University School Of Medicine, 2018
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 136 N San Mateo Dr FL 2

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

  1. Amanda Cinquegrano, FNP-CFamily Nurse Practitioner1548711633
  2. Nisha Patel, MDAllergy & Immunology (Internal Medicine) Physician1336392547
  3. Peter Webb, M.D.Dermatology Physician1023030582
  4. Susan Wolf, M.D.Dermatology Physician1043206261

Verify Alvin Li in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A176382
    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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13% fewer Medicare Part D claims than the average dermatology physician in 2024

693 Medicare Part D claims for 396 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.

  1. Alvin Li693
  2. Specialty average797

Most prescribed

  1. Doxycycline Hyclate367 claims
  2. Ketoconazole52 claims
  3. Triamcinolone Acetonide38 claims
  4. Clobetasol Propionate36 claims
  5. Amoxicillin33 claims
  6. Mupirocin17 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: $1,826.29

82 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alvin Li$1,826.29
  2. Specialty average$8,544.61

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

Bills Medicare through one group practice

  1. Csi Medical GroupMountain View, CA

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

Alvin Li among 2,083 dermatology physician records in California

Alvin Li is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.

  • NPI issued2018 · 86% of these records are older, 11% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2018 · median 2006 among the 1,450 with a school on file
  • Record last updated2023 · 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 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in California

There are 2,083 dermatology physician records in California.

The 8 dermatology physician records with the nearest ZIP codes

  1. Carie Chui, M.D.San Mateo, CA 944011346341252
  2. Bruce Maltz, M.D.San Mateo, CA 944011871694315
  3. Lucy Schmidt, MDSan Mateo, CA 944011194789628
  4. Elizabeth Wang, MDSan Mateo, CA 944011043695174
  5. Peter Webb, M.D.San Mateo, CA 944011023030582
  6. Susan Wolf, M.D.San Mateo, CA 944011043206261
  7. Stanley Young, MDSan Mateo, CA 944011902025190
  8. Kerry Zandee Van Rilland, MDSan Mateo, CA 944011982136586

Common questions

What is Alvin Li's NPI number?

Alvin Li's National Provider Identifier (NPI) is 1225531007, issued on Mar 17, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Alvin Li located?

The NPPES record lists a practice address at 136 N San Mateo Dr FL 2, San Mateo, CA, 94401. Phone: (650) 348-1242. Providers update this record themselves, so call before visiting.

How can I verify Alvin Li's license?

NPPES lists California license number A176382, 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 Alvin Li prescribe under Medicare Part D?

In 2024, Alvin Li had 693 Medicare Part D claims for 396 beneficiaries; the average among dermatology physician prescribers was 797. 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.