Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Patricia Hiep-Chan T. Phan-Underhill, DDS
Dentist in Los Gatos, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346438645
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Registry record
Entity type Individual (Type 1)
Name Patricia Hiep-Chan T. Phan-Underhill
Credential DDS
Sex Female
Practice address 14543 S Bascom Ave, Los Gatos, CA, 95032
Phone (408) 358-5115
Enumeration date Oct 11, 2007
Last updated in NPPES Nov 10, 2009
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
Where does Patricia Hiep-Chan Phan-Underhill practice?
The practice location on file with NPPES is in Los Gatos, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Patricia Hiep-Chan Phan-Underhill?
The National Provider Identifier (NPI) for Patricia Hiep-Chan Phan-Underhill is 1346438645, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-10.