William Huy Q. Nguyen, DDS
Dentist · Gilroy, CA
William Huy Q. Nguyen, DDS is a dentist with a practice address in Gilroy, California, and NPI 1487894663, issued on Feb 27, 2009. Check the license (California 47538, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Huy Q. Nguyen
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 47538 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8650 San Ysidro Ave, Gilroy, CA 95020
- Phone
- (408) 842-3900
- Enumerated
- Feb 27, 2009
- Record last updated
- Feb 27, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (408) 842-3966
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 8650 San Ysidro Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charlene Tran, O.D.Optometrist1043367733
Verify William Huy Q. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 47538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average dentist in 2024
26 Medicare Part D claims for 14 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.
Most prescribed
- Penicillin V Potassium16 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.
William Huy Q. Nguyen among 14,729 dentist records in California
William Huy Q. Nguyen, DDS 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 2009, is newer than 48% of them.
- NPI issued2009 · 48% of these records are older, 49% 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 updated2009 · 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).
21 dentist records list a practice address in Gilroy
They are 21 of the 2,100 NPPES records with a practice address in Gilroy, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Gilroy → Dentist nationwide →
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- Binh Pham, D.D.S.Gilroy, CA 950201033341110
- Savitha SeshadriGilroy, CA 950201427563568
Common questions
What is William Huy Q. Nguyen, DDS's NPI number?
William Huy Q. Nguyen, DDS's National Provider Identifier (NPI) is 1487894663, issued on Feb 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is William Huy Q. Nguyen, DDS located?
The NPPES record lists a practice address at 8650 San Ysidro Ave, Gilroy, CA, 95020. Phone: (408) 842-3900. Providers update this record themselves, so call before visiting.
How can I verify William Huy Q. Nguyen, DDS's license?
NPPES lists California license number 47538, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Huy Q. Nguyen, DDS prescribe under Medicare Part D?
In 2024, William Huy Q. Nguyen, DDS had 26 Medicare Part D claims for 14 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.