Anthony Chan, M.D.
Surgery Physician · Castro Valley, CA
Anthony Chan, M.D. is a surgery physician with a practice address in Castro Valley, California, and NPI 1285070235, issued on May 17, 2013. Check the license (California A156682, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Anthony Chan
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A156682 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20101 Lake Chabot RD, Castro Valley, CA 94546
- Phone
- (510) 204-8168
- Enumerated
- May 17, 2013
- Record last updated
- Mar 9, 2022
- Fax
- (510) 506-7729
- Medicare enrollment
- Enrolled (PECOS I20180920003525); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 20101 Lake Chabot RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tania Benjamin, MDPlastic Surgery within the Head & Neck (Otolaryngology) Physician1093276131
- Jennifer CaseyEndocrinology, Diabetes & Metabolism Physician1750524575
- Mandeep Chadha, AUDAudiologist1346078086
- Phassarin Chansakul, MDPediatrics Physician1922413038
- Nalurporn Chokrungvaranon, M.D.Endocrinology, Diabetes & Metabolism Physician1922209436
- Huong Dang, MDFamily Medicine Physician1417390071
Verify Anthony Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156682Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average surgery physician in 2024
29 Medicare Part D claims for 19 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 13 claims were for opioids.
Most prescribed
- Oxycodone Hcl11 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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anthony Chan among 3,118 surgery physician records in California
Anthony Chan, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2013 · median 2003 among the 1,901 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Castro Valley → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Louise Hom, M.D.Castro Valley, CA 945461649275330
- James Lesher, MDCastro Valley, CA 945461689963118
- Yoshitsugu Teramoto, MDCastro Valley, CA 945461447375076
- William Wood, M.D., M.S.Castro Valley, CA 945461821309022
- Charles Binkley, MDHayward, CA 945451124106604
- Malcolm Garfinkle, M.D.Hayward, CA 945451215125638
- Susan Heckmann, MDHayward, CA 945451851479604
- Rock Liu, MDHayward, CA 945451174601256
Common questions
What is Anthony Chan, M.D.'s NPI number?
Anthony Chan, M.D.'s National Provider Identifier (NPI) is 1285070235, issued on May 17, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Anthony Chan, M.D. located?
The NPPES record lists a practice address at 20101 Lake Chabot RD, Castro Valley, CA, 94546. Phone: (510) 204-8168. Providers update this record themselves, so call before visiting.
How can I verify Anthony Chan, M.D.'s license?
NPPES lists California license number A156682, 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 Anthony Chan, M.D. prescribe under Medicare Part D?
In 2024, Anthony Chan, M.D. had 29 Medicare Part D claims for 19 beneficiaries; the average among surgery physician prescribers was 147. 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.