Joseph Chao, MD
Dermatology Physician · San Francisco, CA
Joseph Chao, MD is a dermatology physician with a practice address in San Francisco, California, and NPI 1861805210, issued on Jun 3, 2014. Check the license (California A154992, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Chao
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A154992 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Van Ness Ave FL 6, San Francisco, CA 94109
- Phone
- (415) 600-5778
- Enumerated
- Jun 3, 2014
- Entity
- Type 1 · individual
Also registered at 1100 Van Ness Ave FL 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrew Escobar, MDInternal Medicine Physician1285375238
- Angela Higuchi, N.P.Ambulatory Women's Health Care Registered Nurse1669535167
- Eric HoffmanHospitalist Physician1679153522
- Song Kim, M.D.Vascular Neurology Physician1104280056
Verify Joseph Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A154992Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2% fewer Medicare Part D claims than the average dermatology physician in 2024
780 Medicare Part D claims for 342 beneficiaries, against an average of 799 among the 11,754 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Fluorouracil177 claims
- Triamcinolone Acetonide100 claims
- Clobetasol Propionate86 claims
- Ketoconazole65 claims
- Calcipotriene60 claims
- Dupixent Pen57 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: $3,923.36
150 payments, mostly food and beverage; the largest payer was Abbvie Inc.. The 9,431 providers of this specialty with any payment received $8,593.06 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.
One hospital or facility affiliation
- Sutter Bay Medical FoundationBerkeley, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Dermatology Physician providers in California
There are 2,004 dermatology physician records in California.
Other dermatology physician records in California
- Sumaira Aasi, MDStanford, CA1780675181
- Christopher Abbott, M.D.San Diego, CA1578866885
- Eman Abdallah, D.O.Los Angeles, CA1528321957
- Farah Abdulla, MDDuarte, CA1093934390
- Sayyida Abdus-Salaam, M.D.Daly City, CA1114241296
- Robert Abergel, M.D.Santa Monica, CA1841565843
- Glynis Ablon, M.D.Manhattan Beach, CA1144292889
- Arthur Abrams, MDMountain View, CA1518093178
- Aseel Abu-NasserRedding, CA1609641711
- Faud Abuabara, M.D.Mountain View, CA1164472890
Common questions
What is Joseph Chao, MD's NPI number?
Joseph Chao, MD's National Provider Identifier (NPI) is 1861805210, issued on Jun 3, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Chao, MD located?
The NPPES record lists a practice address at 1100 Van Ness Ave FL 6, San Francisco, CA, 94109. Phone: (415) 600-5778. Providers update this record themselves, so call before visiting.
How can I verify Joseph Chao, MD's license?
NPPES lists California license number A154992, 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 Joseph Chao, MD prescribe under Medicare Part D?
In 2024, Joseph Chao, MD had 780 Medicare Part D claims for 342 beneficiaries; the average among dermatology physician prescribers was 799. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.