Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William On, DDS

Individual provider Endodontics · NPI 1013562586

William On, DDS is an Endodontics in Palo Alto, California. Licensed in California. Registered with an NPI since 2019.

Licensed in
CA
In the registry since
2019
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

420 Cambridge Ave Ste 5
Palo Alto, CA 94306-1594
Phone: (650) 328-3636
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endodontics (primary) Taxonomy 1223E0200X · Licence 103641 (CA)

Record details

NPI number1013562586
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedAugust 1, 2019
Last updated in NPPESFebruary 18, 2026
Certification dateFebruary 18, 2026

Other providers in Palo Alto