Jason A. Wertheimer, D.O.
Family Medicine Physician · San Francisco, CA
Jason A. Wertheimer, D.O. is a family medicine physician with a practice address in San Francisco, California, and NPI 1154855922, issued on Apr 18, 2017. Check the license (California 19142, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jason A. Wertheimer
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 19142 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1823 Union St, San Francisco, CA 94123
- Phone
- (888) 663-6331
- Enumerated
- Apr 18, 2017
- Record last updated
- May 11, 2026
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20210922003481); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1823 Union St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victoria Fung, PAPhysician Assistant1700522539
- Darenie Goodman, MDFamily Medicine Physician1295992527
- Vanessa Hashim, MSPAPhysician Assistant1245781335
- Tara Kantharaj, M.D.Family Medicine Physician1033552401
- Melinda Kong, M.D.Family Medicine Physician1306296348
- William Lu, MDSleep Medicine (Family Medicine) Physician1528486297
Verify Jason A. Wertheimer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 19142Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average family medicine physician in 2024
1,783 Medicare Part D claims for 386 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium177 claims
- Amlodipine Besylate162 claims
- Metformin Hcl58 claims
- Losartan Potassium52 claims
- Lisinopril48 claims
- Metoprolol Succinate46 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.
Industry payments in 2024: $112.84
5 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Bills Medicare through one group practice
- One Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jason A. Wertheimer among 17,133 family medicine physician records in California
Jason A. Wertheimer, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · median 2005 among the 10,652 with a school on file
- 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Darenie Goodman, MDSan Francisco, CA 941231295992527
- Tara Kantharaj, M.D.San Francisco, CA 941231033552401
- Melinda Kong, M.D.San Francisco, CA 941231306296348
- Parivash Sanders, D.O.San Francisco, CA 941231801245386
- Eric Walsh, M.D.San Francisco, CA 941231588689715
- Xi Chen, MDSan Francisco, CA 941221902434970
- Frank Chen, M.D.San Francisco, CA 941221104010586
- Maksura Chowdhury, M.D.San Francisco, CA 941221831831197
Common questions
What is Jason A. Wertheimer, D.O.'s NPI number?
Jason A. Wertheimer, D.O.'s National Provider Identifier (NPI) is 1154855922, issued on Apr 18, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jason A. Wertheimer, D.O. located?
The NPPES record lists a practice address at 1823 Union St, San Francisco, CA, 94123. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Jason A. Wertheimer, D.O.'s license?
NPPES lists California license number 19142, 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 Jason A. Wertheimer, D.O. prescribe under Medicare Part D?
In 2024, Jason A. Wertheimer, D.O. had 1,783 Medicare Part D claims for 386 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.