Grant Nishimura, DDS, MD
Dentist · Westlake Village, CA
Grant Nishimura, DDS, MD is a dentist with a practice address in Westlake Village, California, and NPI 1306328315, issued on Sep 6, 2018. Check the license (California 102696, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grant Nishimura
- Credential
- DDS, MD
- Primary taxonomy
- Dentist 122300000X
- License number
- 102696 CA
Self-reported in NPPES; status is on the state search - Practice location
- 911 Hampshire RD Ste 4, Westlake Village, CA 91361
- Phone
- (054) 957-4168
- Enumerated
- Sep 6, 2018
- Record last updated
- Sep 16, 2024
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 911 Hampshire RD Ste 4
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ara Mirzaians, DMDOral and Maxillofacial Surgery (Dentist)1932518107
Verify Grant Nishimura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 102696Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average dentist in 2024
219 Medicare Part D claims for 114 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 46 claims were for opioids.
Most prescribed
- Amoxicillin66 claims
- Chlorhexidine Gluconate40 claims
- Ibuprofen19 claims
- Hydrocodone-Acetaminophen15 claims
- Acetaminophen-Codeine14 claims
- Amoxicillin-Clavulanate Potass13 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.
Industry payments in 2024: $159.61
4 payments; by number, the most common kind was food and beverage; the largest payer was KLS-Martin L.P. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Grant Nishimura among 14,729 dentist records in California
Grant Nishimura, DDS, MD is one of 14,729 dentist records with a practice address in California. 56% 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 76% of them.
- NPI issued2018 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2024 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 dentist records list a practice address in Westlake Village
They are 19 of the 1,397 NPPES records with a practice address in Westlake Village, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Westlake Village → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Teri Bianchi, D.D.S.Lake Sherwood, CA 913611184766784
- Sheila Fathi, DDSThousand Oaks, CA 913611790967115
- Steven Greenman, D.D.S.Westlake Village, CA 913611720219876
- David Hakimi, DMDWestlake Village, CA 913611699930768
- Asaf Hever, DDSWestlake Village, CA 913611013900596
- Farideh Kohanghadosh, D.D.S.Thousand Oaks, CA 913611033312079
- Rosa McGivern, DDSWestlake Village, CA 913611821211178
- Stanley Organ, DDSWestlake Village, CA 913611821284340
Common questions
What is Grant Nishimura, DDS, MD's NPI number?
Grant Nishimura, DDS, MD's National Provider Identifier (NPI) is 1306328315, issued on Sep 6, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Grant Nishimura, DDS, MD located?
The NPPES record lists a practice address at 911 Hampshire RD Ste 4, Westlake Village, CA, 91361. Phone: (054) 957-4168. Providers update this record themselves, so call before visiting.
How can I verify Grant Nishimura, DDS, MD's license?
NPPES lists California license number 102696, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Grant Nishimura, DDS, MD prescribe under Medicare Part D?
In 2024, Grant Nishimura, DDS, MD had 219 Medicare Part D claims for 114 beneficiaries; the average among dentist prescribers was 86. 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.