Registry data as of Aug 27, 2026

Grant Shimizu, D.D.S.

General Practice Dentistry · San Jose, CA

Grant Shimizu, D.D.S. is a general practice dentistry with a practice address in San Jose, California, and NPI 1497834923, issued on Nov 3, 2006. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1497834923
Name
Grant Shimizu
Credential
D.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
Practice location
2664 Berryessa RD, San Jose, CA 95132
Phone
(408) 923-5511
Enumerated
Nov 3, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2664 Berryessa RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Al Abad, DDSGeneral Practice Dentistry1104992148
  2. Maximilian Bautista, D.D.SGeneral Practice Dentistry1568656080
  3. William Fat, DDSDentist1730225475
  4. Dexter MassaGeneral Practice Dentistry1831356112
  5. Chi Nguyen, DDSGeneral Practice Dentistry1588616197
  6. Kalindi Patwa, D.M.D.Dentist1467667238

Verify Grant Shimizu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

64% fewer Medicare Part D claims than the average general practice dentistry in 2024

30 Medicare Part D claims for 12 beneficiaries, against an average of 84 among the 68,591 providers of this specialty who prescribed in Part D.

  1. Grant Shimizu30
  2. Specialty average84

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.

575 general practice dentistry records list a San Jose practice address

They are 575 of the 20,925 NPPES records with a San Jose practice address, and 17,740 general practice dentistry records in California.

Other general practice dentistry records in California

  1. Ronald Aanerud, DDSSan Diego, CA1871752931
  2. Steven Aaronson, D.D.S.Santa Monica, CA1265455851
  3. Shahrzad Aarup, DDSPomona, CA1265784367
  4. Al Abad, DDSSan Jose, CA1104992148
  5. Erwin Abad, D.D.S.Canoga Park, CA1861590093
  6. Francine Abad, DDSSan Francisco, CA1942700810
  7. Maria Abad, D.D.S.Norwalk, CA1215006754
  8. Mark Ryan Abad, DDSDaly City, CA1770357394
  9. Sanaz Abadi, D.D.S.Los Angeles, CA1699934026
  10. Ernesto Abadilla, DDSPalm Desert, CA1508063801

Common questions

What is Grant Shimizu, D.D.S.'s NPI number?

Grant Shimizu, D.D.S.'s National Provider Identifier (NPI) is 1497834923, issued on Nov 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Grant Shimizu, D.D.S. located?

The NPPES record lists a practice address at 2664 Berryessa RD, San Jose, CA, 95132. Phone: (408) 923-5511. Providers update this record themselves, so call before visiting.

How can I verify Grant Shimizu, D.D.S.'s license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Grant Shimizu, D.D.S. prescribe under Medicare Part D?

In 2024, Grant Shimizu, D.D.S. had 30 Medicare Part D claims for 12 beneficiaries; the average among general practice dentistry prescribers was 84. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.