Tomonao Hashimoto, MD
Geriatric Medicine (Internal Medicine) Physician · Los Angeles, CA
Tomonao Hashimoto, MD is a geriatric medicine (internal medicine) physician with a practice address in Los Angeles, California, and NPI 1164918975, issued on Jul 4, 2018. Check the license (California A174049, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tomonao Hashimoto
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- A174049 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Ucla Medical Plz Ste 365A, Los Angeles, CA 90095
- Phone
- (310) 206-8272
- Enumerated
- Jul 4, 2018
- Record last updated
- Oct 1, 2025
- Fax
- (310) 794-2113
- Medicare enrollment
- Enrolled (PECOS I20250904002159); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 200 Ucla Medical Plz Ste 365A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marie AdachiGeriatric Medicine (Internal Medicine) Physician1629496740
- Omar Amir, M.D., M.S.Geriatric Medicine (Internal Medicine) Physician1982968194
- Victoria Boyer, LCSWClinical Social Worker1922556695
- Carl Burton, MDInternal Medicine Physician1760873665
- Xiamei ChenNurse Practitioner1164066460
- Winnila May Escalante, N.P.Adult Health Nurse Practitioner1528449709
Verify Tomonao Hashimoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A174049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
3,262 Medicare Part D claims for 241 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 194 claims were for opioids.
Most prescribed
- Atorvastatin Calcium181 claims
- Hydrocodone-Acetaminophen120 claims
- Sertraline Hcl120 claims
- Amlodipine Besylate104 claims
- Eliquis90 claims
- Duloxetine Hcl80 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 2 group practices
- Board OF Trustees OF Southern Illinois UniversitySpringfield, IL
- The Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tomonao Hashimoto among 532 geriatric medicine (internal medicine) physician records in California
Tomonao Hashimoto, MD is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 89% of them.
- NPI issued2018 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2012 · median 1999 among the 271 with a school on file
- Record last updated2025 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Los Angeles → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Susan Charette, MDLos Angeles, CA 900951447285341
- Grace Chen, M.D.Los Angeles, CA 900951770785297
- Joshua Chodosh, MDLos Angeles, CA 900951245265040
- Maristela Garcia, MDLos Angeles, CA 900951881813228
- Gail Greendale, MDLos Angeles, CA 900951750309381
- Patricia Harris, MDLos Angeles, CA 900951912953506
- Peifeng Hu, MDLos Angeles, CA 900951336168186
- Shinya Ishii, M.D.Los Angeles, CA 900951164545976
Common questions
What is Tomonao Hashimoto, MD's NPI number?
Tomonao Hashimoto, MD's National Provider Identifier (NPI) is 1164918975, issued on Jul 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Tomonao Hashimoto, MD located?
The NPPES record lists a practice address at 200 Ucla Medical Plz Ste 365A, Los Angeles, CA, 90095. Phone: (310) 206-8272. Providers update this record themselves, so call before visiting.
How can I verify Tomonao Hashimoto, MD's license?
NPPES lists California license number A174049, 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 Tomonao Hashimoto, MD prescribe under Medicare Part D?
In 2024, Tomonao Hashimoto, MD had 3,262 Medicare Part D claims for 241 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.