Jean Yoshioka, M.D.
Family Medicine Physician · Napa, CA
Jean Yoshioka, M.D. is a family medicine physician with a practice address in Napa, California, and NPI 1023135654, issued on Mar 26, 2007. Check the license (California A93397, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jean Yoshioka
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A93397 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3285 Claremont Way, Napa, CA 94558
- Phone
- (707) 258-2500
- Enumerated
- Mar 26, 2007
- Record last updated
- Jan 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20071101000738); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2004
- 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 3285 Claremont Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jean Yoshioka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A93397Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
107 Medicare Part D claims for 81 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Prednisone13 claims
- Fluticasone Propionate11 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 one group practice
- Permanente Medical Group IncNapa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jean Yoshioka among 17,133 family medicine physician records in California
Jean Yoshioka, 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2004 · 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).
59 family medicine physician records list a practice address in Napa
They are 59 of the 3,583 NPPES records with a practice address in Napa, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Napa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Aurelio Campos, MDNapa, CA 945581265446280
- Andrea Clarke, MDNapa, CA 945581598734709
- Alexandre De Moraes, M.D.Napa, CA 945581942284831
- Benjamin Jewell, MDNapa, CA 945581134134091
- Federico Leon, M.D.Napa, CA 945581659349173
- Maria Montenegro, M.D.Napa, CA 945581992719199
- Robert Moore, MDNapa, CA 945581538194899
- Michael Novak, MDNapa, CA 945581972501179
Common questions
What is Jean Yoshioka, M.D.'s NPI number?
Jean Yoshioka, M.D.'s National Provider Identifier (NPI) is 1023135654, issued on Mar 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jean Yoshioka, M.D. located?
The NPPES record lists a practice address at 3285 Claremont Way, Napa, CA, 94558. Phone: (707) 258-2500. Providers update this record themselves, so call before visiting.
How can I verify Jean Yoshioka, M.D.'s license?
NPPES lists California license number A93397, 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 Jean Yoshioka, M.D. prescribe under Medicare Part D?
In 2024, Jean Yoshioka, M.D. had 107 Medicare Part D claims for 81 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.