Jefferson Wen
Internal Medicine Physician · San Carlos, CA
Jefferson Wen is an internal medicine physician with a practice address in San Carlos, California, and NPI 1851825087, issued on Apr 13, 2017. Check the license (California A160266, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jefferson Wen
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A160266 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 Industrial RD, San Carlos, CA 94070
- Phone
- (650) 596-4000
- Enumerated
- Apr 13, 2017
- Record last updated
- Sep 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200819002593); may accept Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2017
- 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 301 Industrial RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Katrina Abad, AGPCNP-BCNurse Practitioner1306394952
- Maryam Adeel, M.D.Family Medicine Physician1285163998
- Jennifer Akazawa, MDFamily Medicine Physician1457971772
- Sarah Alamillo, PA-CPhysician Assistant1306349352
- Judith Alderman, N.P.Nurse Practitioner1407225121
- Omar Aljundi, NPNurse Practitioner1811464811
Verify Jefferson Wen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A160266Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,952 Medicare Part D claims for 227 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 36 claims were for opioids.
Most prescribed
- Atorvastatin Calcium167 claims
- Amlodipine Besylate129 claims
- Losartan Potassium80 claims
- Tamsulosin Hcl71 claims
- Rosuvastatin Calcium62 claims
- Lisinopril60 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 2 group practices
- San Francisco Unified Physicians Group, IncSan Francisco, CA
- Sutter Bay Medical FoundationSan Carlos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jefferson Wen among 17,696 internal medicine physician records in California
Jefferson Wen 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 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).
18 internal medicine physician records list a practice address in San Carlos
They are 18 of the 1,015 NPPES records with a practice address in San Carlos, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Carlos → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rebecca Ashe, MDSan Carlos, CA 940701003980798
- Ritu BansalSan Carlos, CA 940701003096777
- Suzanne Dey, MDSan Carlos, CA 940701548362270
- Charlotte Gonzales, M.D.San Carlos, CA 940701891758892
- David Jacoby, MDSan Carlos, CA 940701295715134
- Kenneth Lin, MDSan Carlos, CA 940701972546976
- Martha Mejia, M.D.San Carlos, CA 940701871520155
- Shanti Perkins, M.D.San Carlos, CA 940701598844516
Common questions
What is Jefferson Wen's NPI number?
Jefferson Wen's National Provider Identifier (NPI) is 1851825087, issued on Apr 13, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jefferson Wen located?
The NPPES record lists a practice address at 301 Industrial RD, San Carlos, CA, 94070. Phone: (650) 596-4000. Providers update this record themselves, so call before visiting.
How can I verify Jefferson Wen's license?
NPPES lists California license number A160266, 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 Jefferson Wen prescribe under Medicare Part D?
In 2024, Jefferson Wen had 1,952 Medicare Part D claims for 227 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.