Gregory Philip Matsumura, PHARM.D.
Pharmacist · San Jose, CA
Gregory Philip Matsumura, PHARM.D. is a pharmacist with a practice address in San Jose, California, and NPI 1548716053, issued on Aug 25, 2016. Check the license (California 74879, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Philip Matsumura
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 74879 CA
Self-reported in NPPES; status is on the state search - Practice location
- 480 Archglen Way, San Jose, CA 95111
- Phone
- (408) 833-4676
- Enumerated
- Aug 25, 2016
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 480 Archglen Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shelley Matsumura, PHARMDPharmacist1750788717
Verify Gregory Philip Matsumura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 74879Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20.2 times the Medicare Part D claims of the average pharmacist in 2024
2,409 Medicare Part D claims for 351 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Ozempic378 claims
- Atorvastatin Calcium360 claims
- Metformin Hcl167 claims
- Glipizide144 claims
- Metformin Hcl Er144 claims
- Jardiance122 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.
Gregory Philip Matsumura among 32,533 pharmacist records in California
Gregory Philip Matsumura, PHARM.D. is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 47% of them.
- NPI issued2016 · 47% of these records are older, 47% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2021 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
893 pharmacist records list a practice address in San Jose
They are 893 of the 20,925 NPPES records with a practice address in San Jose, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in San Jose → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Christopher Ando, PHARMDSan Jose, CA 951111548439771
- Bao-Chau Bui, PHARM. D.San Jose, CA 951111184986275
- Dan Cao, PHARM.DSan Jose, CA 951111811172976
- Neel Kamal, PHARM. D.San Jose, CA 951111912045071
- Chaoyu Kawamura, RPHSan Jose, CA 951111396008470
- Judy NgoSan Jose, CA 951111053580209
- Bachyen Nguyen, PHARMACISTSan Jose, CA 951111639178221
- Huyen Nguyen, PHARMACISTSan Jose, CA 951111619031903
Common questions
What is Gregory Philip Matsumura, PHARM.D.'s NPI number?
Gregory Philip Matsumura, PHARM.D.'s National Provider Identifier (NPI) is 1548716053, issued on Aug 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Philip Matsumura, PHARM.D. located?
The NPPES record lists a practice address at 480 Archglen Way, San Jose, CA, 95111. Phone: (408) 833-4676. Providers update this record themselves, so call before visiting.
How can I verify Gregory Philip Matsumura, PHARM.D.'s license?
NPPES lists California license number 74879, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Philip Matsumura, PHARM.D. prescribe under Medicare Part D?
In 2024, Gregory Philip Matsumura, PHARM.D. had 2,409 Medicare Part D claims for 351 beneficiaries; the average among pharmacist prescribers was 119. 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.