Mark Chan
Medical Physician Assistant · Hayward, CA
Mark Chan is a medical physician assistant with a practice address in Hayward, California, and NPI 1740639442, issued on Jun 3, 2016. Check the license (California 53443, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Chan
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 53443 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27200 Calaroga Ave, Hayward, CA 94545
- Phone
- (510) 264-4000
- Enumerated
- Jun 3, 2016
- Record last updated
- Jun 3, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160816001918); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 27200 Calaroga Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yahya Ahmed, M.D.Internal Medicine Physician1124283312
- Neelima Akkinapalli, P.A.Physician Assistant1154523496
- Matthew Andrews, NPAcute Care Nurse Practitioner1699645424
- Yalda Bahrani, FNP-CNurse Practitioner1770182388
- Manon Baze, PAPhysician Assistant1104849520
- John Bell, M.D.Internal Medicine Physician1720282932
Verify Mark Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 53443Check 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 medical physician assistant in 2024
231 Medicare Part D claims for 164 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Ibuprofen35 claims
- Hydrocodone-Acetaminophen15 claims
- Doxycycline Monohydrate12 claims
- Amoxicillin-Clavulanate Potass11 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 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
- Alameda Health SystemSan Leandro, CA
- Pleasanton Emergency Medical GroupLivermore, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Chan among 3,376 medical physician assistant records in California
Mark Chan is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 66% of them.
- NPI issued2016 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2016 · median 2012 among the 1,347 with a school on file
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Hayward → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Edward Caccioppo, P.A.Hayward, CA 945451992782635
- Claudia Heath, PA-CHayward, CA 945451275608507
- Mark MeddersHayward, CA 945451952713711
- Isabel Papp, PAHayward, CA 945451063488591
- Casey HenningHayward, CA 945441487267779
- Marc Munoz, P.A.Castro Valley, CA 945461013186956
- Judy Nogales-Chapman, PA-CCastro Valley, CA 945461720075914
- Sandi Woo, PA-CCastro Valley, CA 945461225103161
Common questions
What is Mark Chan's NPI number?
Mark Chan's National Provider Identifier (NPI) is 1740639442, issued on Jun 3, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mark Chan located?
The NPPES record lists a practice address at 27200 Calaroga Ave, Hayward, CA, 94545. Phone: (510) 264-4000. Providers update this record themselves, so call before visiting.
How can I verify Mark Chan's license?
NPPES lists California license number 53443, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Chan prescribe under Medicare Part D?
In 2024, Mark Chan had 231 Medicare Part D claims for 164 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Mark Chan's MIPS final score?
The 2023 MIPS final score is 91 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.