Aileen Yenting Chang, M.D.
Dermatology Physician · San Francisco, CA
Aileen Yenting Chang, M.D. is a dermatology physician with a practice address in San Francisco, California, and NPI 1871869156, issued on Mar 30, 2012. Check the license (California A141939, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aileen Yenting Chang
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A141939 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 476-1000
- Enumerated
- Mar 30, 2012
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20170710001636); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2012
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 400 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daniel Adelman, M.D.Internal Medicine Physician1922041821
- Joshua Adler, MDInternal Medicine Physician1194781351
- Justin Ahn, M.D.Urology Physician1063755148
- Weiyun Ai, MDMedical Oncology Physician1649346842
Verify Aileen Yenting Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A141939Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average dermatology physician in 2024
115 Medicare Part D claims for 36 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Ketoconazole22 claims
- Triamcinolone Acetonide15 claims
- Dupixent Syringe14 claims
- Clobetasol Propionate11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- City And County OF San FranciscoSan Francisco, CA
- University OF California Sfgh Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aileen Yenting Chang among 2,083 dermatology physician records in California
Aileen Yenting Chang, M.D. 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 2012, is newer than 70% of them.
- NPI issued2012 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2012 · median 2006 among the 1,450 with a school on file
- Record last updated2022 · 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
- Jeffrey ChengSan Francisco, CA 941431699933069
- Howard Maibach, M.D.San Francisco, CA 941431912930470
- Erin Mathes, ERIN MATHESSan Francisco, CA 941431376670976
- Isaac Neuhaus, MDSan Francisco, CA 941431811954431
- Lowell Nicholson, MDSan Francisco, CA 941431780115261
- Vera Price, M.D.San Francisco, CA 941431679591762
- Jack Resneck, MDSan Francisco, CA 941431760449292
- Lee Zane, M.D.San Francisco, CA 941431437194099
Common questions
What is Aileen Yenting Chang, M.D.'s NPI number?
Aileen Yenting Chang, M.D.'s National Provider Identifier (NPI) is 1871869156, issued on Mar 30, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Aileen Yenting Chang, M.D. located?
The NPPES record lists a practice address at 400 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-1000. Providers update this record themselves, so call before visiting.
How can I verify Aileen Yenting Chang, M.D.'s license?
NPPES lists California license number A141939, 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 Aileen Yenting Chang, M.D. prescribe under Medicare Part D?
In 2024, Aileen Yenting Chang, M.D. had 115 Medicare Part D claims for 36 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Aileen Yenting Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.