William on, DDS
NPI 1013562586 · Endodontics · Palo Alto, CA
William on, DDS is a Endodontics provider in Palo Alto, CA (NPI 1013562586).
Provider details
- NPI number
- 1013562586
- Entity type
- Individual
- Primary specialty
- EndodonticsDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 103641 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-08-01
- Last updated
- 2026-02-18
- Certified
- 2026-02-18
Frequently asked questions
- What is William on's NPI number?
- William on's National Provider Identifier (NPI) is 1013562586, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William on's specialty?
- William on is listed in the NPPES registry with a primary specialty of Endodontics (Dental Providers).
- Where is William on located?
- William on's practice location on file with NPPES is 420 Cambridge Ave Ste 5, Palo Alto, CA 94306-1594.
- What is William on's phone number?
- The practice phone number listed in the NPPES registry for William on is (650) 328-3636.
- Is William on's NPI active?
- Yes — William on's NPI (1013562586) is active in the NPPES registry as of the last update on 2026-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.