William Fat, DDS
Dentist · San Jose, CA
William Fat, DDS is a dentist with a practice address in San Jose, California, and NPI 1730225475, issued on Jan 29, 2007. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Fat
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- Practice location
- 2664 Berryessa RD, San Jose, CA 95132
- Phone
- (408) 926-4422
- Enumerated
- Jan 29, 2007
- Entity
- Type 1 · individual
Also registered at 2664 Berryessa RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Fat in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
81% fewer Medicare Part D claims than the average dentist in 2024
17 Medicare Part D claims for 13 beneficiaries, against an average of 90 among the 51,502 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin11 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.
448 dentist records list a San Jose practice address
They are 448 of the 20,925 NPPES records with a San Jose practice address, and 14,906 dentist records in California.
All 448 in San Jose → All 14,906 in California → Every provider in San Jose →
Other dentist records in California
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- Behzad Abadi, DMDDowney, CA1588879100
- Esfandiar Abadi, DDSSacramento, CA1992926448
- Bahareh AbadianSan Jose, CA1689169005
- Reza Abaei Tafreshi, DDSIrvine, CA1134656804
- Michael AbaianSherman Oaks, CA1023263167
Common questions
What is William Fat, DDS's NPI number?
William Fat, DDS's National Provider Identifier (NPI) is 1730225475, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Fat, DDS located?
The NPPES record lists a practice address at 2664 Berryessa RD, San Jose, CA, 95132. Phone: (408) 926-4422. Providers update this record themselves, so call before visiting.
How can I verify William Fat, DDS's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Fat, DDS prescribe under Medicare Part D?
In 2024, William Fat, DDS had 17 Medicare Part D claims for 13 beneficiaries; the average among dentist prescribers was 90. 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.