Hirofumi Hashimoto, MD
Internal Medicine Physician · Saint Helena, CA
Hirofumi Hashimoto, MD is an internal medicine physician with a practice address in Saint Helena, California, and NPI 1104812585, issued on Sep 21, 2005. Check the license (California G83463, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hirofumi Hashimoto
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G83463 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10 Woodland RD, Saint Helena, CA 94574
- Phone
- (707) 963-6399
- Enumerated
- Sep 21, 2005
- Record last updated
- Mar 29, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050301000589); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10 Woodland RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julie Butulia, RDRegistered Dietitian1679376891
- Danny Cao, PHARMACISTPharmacist1447069570
- David Carelock, CRNACertified Registered Nurse Anesthetist1790773596
Verify Hirofumi Hashimoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G83463Check 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 internal medicine physician in 2024
109 Medicare Part D claims for 41 beneficiaries, against an average of 3,176 among the 108,855 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 97.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pacific Inpatient Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hirofumi Hashimoto among 17,696 internal medicine physician records in California
Hirofumi Hashimoto, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 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).
11 internal medicine physician records list a practice address in Saint Helena
They are 11 of the 232 NPPES records with a practice address in Saint Helena, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Saint Helena → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sahiba Bajwa, MDSaint Helena, CA 945741346869567
- Matthew Corvo, MDSaint Helena, CA 945741265811475
- Susan Gamble, M.D.Saint Helena, CA 945741790950079
- Leah Grabenauer, MDSaint Helena, CA 945741760740385
- John Hart, MDSaint Helena, CA 945741104904945
- Arun Hatwalkar, MDSaint Helena, CA 945741689600090
- Padmaja Manyam, M.D.Saint Helena, CA 945741679882500
- Heather Pena, MDSaint Helena, CA 945741881703973
Common questions
What is Hirofumi Hashimoto, MD's NPI number?
Hirofumi Hashimoto, MD's National Provider Identifier (NPI) is 1104812585, issued on Sep 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Hirofumi Hashimoto, MD located?
The NPPES record lists a practice address at 10 Woodland RD, Saint Helena, CA, 94574. Phone: (707) 963-6399. Providers update this record themselves, so call before visiting.
How can I verify Hirofumi Hashimoto, MD's license?
NPPES lists California license number G83463, 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 Hirofumi Hashimoto, MD prescribe under Medicare Part D?
In 2024, Hirofumi Hashimoto, MD had 109 Medicare Part D claims for 41 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Hirofumi Hashimoto, MD's MIPS final score?
The 2023 MIPS final score is 97.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.