Benjamin Sommer, DO
Family Medicine Physician · San Francisco, CA
Benjamin Sommer, DO is a family medicine physician with a practice address in San Francisco, California, and NPI 1528396710, issued on Nov 26, 2009. Check the license (California 20A16118, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin Sommer
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A16118 CA
036.144388 IL
63171 MN
2017034845 MO
2021-03446 NC
and 4 more
Self-reported in NPPES; status is on the state search - Practice location
- 1 California St Ste 2300, San Francisco, CA 94111
- Phone
- (800) 997-6196
- Enumerated
- Nov 26, 2009
- Record last updated
- Aug 19, 2024
- Fax
- (415) 504-1367
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1 California St Ste 2300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Allen, NP-CFamily Nurse Practitioner1467962621
- Veronica Andis-High, APRNPrimary Care Nurse Practitioner1477941680
- D'Aren ArchieFamily Nurse Practitioner1265924187
- Leena Badhwar, M.D.Internal Medicine Physician1265466874
- Celia Baya, RNRegistered Nurse1609723212
- Jeanna Bender, ARNP-CFamily Nurse Practitioner1598813974
Verify Benjamin Sommer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A16118Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
23 Medicare Part D claims for 11 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Benjamin Sommer among 17,133 family medicine physician records in California
Benjamin Sommer, DO 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 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 40% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2024 · 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
- Hollis Burggraf, MDSan Francisco, CA 941111962484329
- Melissa Coomes, M.D.San Francisco, CA 941111811987605
- Jennette Cross, MDSan Francisco, CA 941111942349964
- Paula Dungog-Ocaya, MDSan Francisco, CA 941111962589317
- Susan Fedinec, DOSan Francisco, CA 941111770549958
- Hayden Lewis, MDSan Francisco, CA 941111083783633
- Gwendolyn Okuzumi, MDSan Francisco, CA 941111720164239
- Michael Rosenfield, D.O.San Francisco, CA 941111720087141
Common questions
What is Benjamin Sommer, DO's NPI number?
Benjamin Sommer, DO's National Provider Identifier (NPI) is 1528396710, issued on Nov 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Sommer, DO located?
The NPPES record lists a practice address at 1 California St Ste 2300, San Francisco, CA, 94111. Phone: (800) 997-6196. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Sommer, DO's license?
NPPES lists California license number 20A16118, 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 Benjamin Sommer, DO prescribe under Medicare Part D?
In 2024, Benjamin Sommer, DO had 23 Medicare Part D claims for 11 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.