Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William Joe Fat, DDS
Dentist in San Jose, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1730225475
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Registry record
Entity type Individual (Type 1)
Name Dr. William Joe Fat
Credential DDS
Sex Male
Practice address 2664 Berryessa Rd, Suite #207, San Jose, CA, 95132
Phone (408) 926-4422
Enumeration date Jan 29, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1730225475 active?
Yes, as of the latest NPPES snapshot, NPI 1730225475 is active (record last updated 2007-07-08).
How do I verify William Fat's NPI record?
Cross-check NPI 1730225475 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Chi Nguyen General Practice Dentistry · San Jose, CA NPI 1588616197 Grant Shimizu General Practice Dentistry · San Jose, CA NPI 1497834923 Al Abad General Practice Dentistry · San Jose, CA NPI 1104992148 Kalindi Patwa Dentist · San Jose, CA NPI 1467667238 Ashmita Shetty General Practice Dentistry · San Jose, CA NPI 1588872808 Darwin Naranja General Practice Dentistry · San Jose, CA NPI 1710182514 Vu Tran Dental, Inc. General Practice Dentistry · San Jose, CA NPI 1184823536 Maximilian Bautista General Practice Dentistry · San Jose, CA NPI 1568656080
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.