Josefa Fay Simkin, M.D.
Family Medicine Physician · Freedom, CA
Josefa Fay Simkin, M.D. is a family medicine physician with a practice address in Freedom, California, and NPI 1487670352, issued on Jul 14, 2006. Check the license (California A43836, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Josefa Fay Simkin
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A43836 CA
Self-reported in NPPES; status is on the state search - Practice location
- 266 Green Valley RD, Freedom, CA 95019
- Phone
- (831) 761-1141
- Enumerated
- Jul 14, 2006
- Record last updated
- Feb 2, 2022
- Fax
- (831) 722-7826
- Medicaid ID
- 00A438360 CA
- Medicare enrollment
- Enrolled (PECOS I20100825000844); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Josefa Fay Simkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A43836Check 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
53 Medicare Part D claims for 23 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.
Bills Medicare through one group practice
- Permanente Medical Group IncScotts Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Josefa Fay Simkin among 17,133 family medicine physician records in California
Josefa Fay Simkin, M.D. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1985 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 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).
3 family medicine physician records list a practice address in Freedom
They are 3 of the 90 NPPES records with a practice address in Freedom, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Freedom → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Gallagher, M.D.Freedom, CA 950191427163930
- Julius Angelo Ramirez, MDFreedom, CA 950191548520638
- Joseph Barbara, M.D.Gilroy, CA 950201831119486
- Henry Chua, MDGilroy, CA 950201164457370
- Richard Dohn, M.DGilroy, CA 950201558384446
- Lawrence Gamboa, M.D.Gilroy, CA 950201407872187
- Roy Johnson, MDGilroy, CA 950201275619793
- Smitha Kumar, MDGilroy, CA 950201619965688
Common questions
What is Josefa Fay Simkin, M.D.'s NPI number?
Josefa Fay Simkin, M.D.'s National Provider Identifier (NPI) is 1487670352, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Josefa Fay Simkin, M.D. located?
The NPPES record lists a practice address at 266 Green Valley RD, Freedom, CA, 95019. Phone: (831) 761-1141. Providers update this record themselves, so call before visiting.
How can I verify Josefa Fay Simkin, M.D.'s license?
NPPES lists California license number A43836, 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 Josefa Fay Simkin, M.D. prescribe under Medicare Part D?
In 2024, Josefa Fay Simkin, M.D. had 53 Medicare Part D claims for 23 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.