William Wei Ming Chen, MD
Internal Medicine Physician · San Pablo, CA
William Wei Ming Chen, MD is an internal medicine physician with a practice address in San Pablo, California, and NPI 1851498372, issued on Sep 19, 2006. Check the license (California A070200, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Wei Ming Chen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A070200 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2089 Vale RD, San Pablo, CA 94806
- Phone
- (510) 235-9247
- Enumerated
- Sep 19, 2006
- Record last updated
- Nov 5, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (510) 235-9248
- Medicaid ID
- A702000 CA
- Medicare enrollment
- Enrolled (PECOS I20070502000697); may accept Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2089 Vale RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Wei Ming Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A070200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average internal medicine physician in 2024
16,980 Medicare Part D claims for 833 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 1,051 claims were for opioids.
Most prescribed
- Atorvastatin Calcium946 claims
- Amlodipine Besylate761 claims
- Hydrocodone-Acetaminophen730 claims
- Metformin Hcl551 claims
- Metoprolol Succinate417 claims
- Losartan Potassium404 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 MIPS final score for 2023 (Medicare payment program): 81.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $725.78
39 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
William Wei Ming Chen among 17,696 internal medicine physician records in California
William Wei Ming Chen, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2004 among the 11,065 with a school on file
- Record last updated2009 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 internal medicine physician records list a practice address in San Pablo
They are 8 of the 517 NPPES records with a practice address in San Pablo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Pablo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Khosrow Afsari, FACP MDSan Pablo, CA 948061144324351
- Ronald Berman, M.D.San Pablo, CA 948061700967361
- Paul Cianci, M.D.San Pablo, CA 948061043390115
- Tuan Dang, M.DSan Pablo, CA 948061306059357
- Pablo Guevara, M.D.San Pablo, CA 948061811967748
- Mofiz Haque, M.D.San Pablo, CA 948061811967375
- Sharon Jones, MDRichmond, CA 948061821199845
- Sarah Krasny, MDSan Pablo, CA 948061891299715
Common questions
What is William Wei Ming Chen, MD's NPI number?
William Wei Ming Chen, MD's National Provider Identifier (NPI) is 1851498372, issued on Sep 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Wei Ming Chen, MD located?
The NPPES record lists a practice address at 2089 Vale RD, San Pablo, CA, 94806. Phone: (510) 235-9247. Providers update this record themselves, so call before visiting.
How can I verify William Wei Ming Chen, MD's license?
NPPES lists California license number A070200, 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 William Wei Ming Chen, MD prescribe under Medicare Part D?
In 2024, William Wei Ming Chen, MD had 16,980 Medicare Part D claims for 833 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is William Wei Ming Chen, MD's MIPS final score?
The 2023 MIPS final score is 81.1 of 100. 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.