William Henry Chan, M.D.
Dermatology Physician · Sacramento, CA
William Henry Chan, M.D. is a dermatology physician with a practice address in Sacramento, California, and NPI 1588602338, issued on Jun 3, 2006. Check the license (California A20775, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Henry Chan
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A20775 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5525 Assembly CT, Sacramento, CA 95823
- Phone
- (916) 421-1772
- Enumerated
- Jun 3, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (916) 421-0635
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 5525 Assembly CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Young, M.D.Physical Medicine & Rehabilitation Physician1255363602
Verify William Henry Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A20775Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Henry Chan among 2,083 dermatology physician records in California
William Henry Chan, 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 not. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 56% newer
- In a Medicare fileNo · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2026 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,083 in California → Every provider in Sacramento → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Thomas Giustina, MDSacramento, CA 958231003994724
- Paula Huber, MDSacramento, CA 958231720166457
- Sangeeta Marwaha, MDSacramento, CA 958231427136142
- Jasdeep Sharma, MD, FRCPCSacramento, CA 958231386684561
- Timothy Baker, MDSacramento, CA 958251598843245
- Sheila Braunstein, M.D.Sacramento, CA 958251053356089
- Pantea Hashemi, M.D.Sacramento, CA 958251902123383
- Mary Horner, MDSacramento, CA 958251194055699
Common questions
What is William Henry Chan, M.D.'s NPI number?
William Henry Chan, M.D.'s National Provider Identifier (NPI) is 1588602338, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Henry Chan, M.D. located?
The NPPES record lists a practice address at 5525 Assembly CT, Sacramento, CA, 95823. Phone: (916) 421-1772. Providers update this record themselves, so call before visiting.
How can I verify William Henry Chan, M.D.'s license?
NPPES lists California license number A20775, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.