William Chan, DDS
NPI 1699857904 · Oral and Maxillofacial Surgery (Dentist) · San Francisco, CA
William Chan, DDS is a Oral and Maxillofacial Surgery (Dentist) provider in San Francisco, CA (NPI 1699857904).
Provider details
- NPI number
- 1699857904
- Entity type
- Individual
- Primary specialty
- Oral and Maxillofacial Surgery (Dentist)Dental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25787 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Chan's NPI number?
- William Chan's National Provider Identifier (NPI) is 1699857904, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chan's specialty?
- William Chan is listed in the NPPES registry with a primary specialty of Oral and Maxillofacial Surgery (Dentist) (Dental Providers).
- Where is William Chan located?
- William Chan's practice location on file with NPPES is 2001 Van Ness Ave Ste 401, San Francisco, CA 94109-3040.
- What is William Chan's phone number?
- The practice phone number listed in the NPPES registry for William Chan is (415) 776-6710.
- Is William Chan's NPI active?
- Yes — William Chan's NPI (1699857904) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.