What is William Baker's NPI number?

William Baker's National Provider Identifier (NPI) is 1952259632, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Baker's specialty?

William Baker is listed in the NPPES registry with a primary specialty of Case Manager/Care Coordinator (Other Service Providers).

Where is William Baker located?

William Baker's practice location on file with NPPES is Po Box 5431, Vallejo, CA 94591-0543.

What is William Baker's phone number?

The practice phone number listed in the NPPES registry for William Baker is (510) 684-4880.

Is William Baker's NPI active?

Yes — William Baker's NPI (1952259632) is active in the NPPES registry as of the last update on 2026-03-19.

IndividualActive

William Baker

NPI 1952259632 · Case Manager/Care Coordinator · Vallejo, CA

William Baker is a Case Manager/Care Coordinator provider in Vallejo, CA (NPI 1952259632).

Provider details

NPI number: 1952259632
Entity type: Individual
Primary specialty: Case Manager/Care CoordinatorOther Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Case Manager/Care CoordinatorPrimary171M00000X
Other Service Providers

Profile Score

Basic profile(46/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% 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

Po Box 5431

Vallejo, CA 94591-0543

Phone: (510) 684-4880

Approximate (ZIP-level) locationGet directions

More CA providers

Mailing address