Aaron Chen, D.O.
Dermatology Physician · San Francisco, CA
Aaron Chen, D.O. is a dermatology physician with a practice address in San Francisco, California, and NPI 1780043703, issued on Feb 18, 2016. Check the license (California 22080, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aaron Chen
- Credential
- D.O.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- 22080 CA
OS15102 FL
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Union St Ste 520, San Francisco, CA 94123
- Phone
- (415) 922-3344
- Enumerated
- Feb 18, 2016
- Record last updated
- Jan 3, 2024
- Fax
- (415) 921-7759
- Medicare enrollment
- Enrolled (PECOS I20240304003246); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Verify Aaron Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 22080Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average dermatology physician in 2024
126 Medicare Part D claims for 70 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
Most prescribed
- Dutasteride29 claims
- Valacyclovir12 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: $3,126.07
98 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.
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
- Csi Medical GroupKentfield, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Chen among 2,083 dermatology physician records in California
Aaron Chen, D.O. 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 2016, is newer than 80% of them.
- NPI issued2016 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2006 among the 1,450 with a school on file
- Record last updated2024 · 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.
All 2,083 in California → Every provider in San Francisco → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Samuel Ellison, MDSan Francisco, CA 941231336228436
- Peter Panagotacos, M.D.San Francisco, CA 941231740302868
- Greta Clarke, MDSan Francisco, CA 941211912059494
- Peter Elias, M.D.San Francisco, CA 941211386785681
- Theodora Mauro, M.D.San Francisco, CA 941211285609040
- Dennis Oh, M.D.San Francisco, CA 941211710953047
- Maria Wei, M.D., PH.D.San Francisco, CA 941211689640864
- Deirdre Alexander, M.D.San Francisco, CA 941181033491873
Common questions
What is Aaron Chen, D.O.'s NPI number?
Aaron Chen, D.O.'s National Provider Identifier (NPI) is 1780043703, issued on Feb 18, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Chen, D.O. located?
The NPPES record lists a practice address at 2001 Union St Ste 520, San Francisco, CA, 94123. Phone: (415) 922-3344. Providers update this record themselves, so call before visiting.
How can I verify Aaron Chen, D.O.'s license?
NPPES lists California license number 22080, 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 Aaron Chen, D.O. prescribe under Medicare Part D?
In 2024, Aaron Chen, D.O. had 126 Medicare Part D claims for 70 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.