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

William O Baker

Individual provider Case Manager/Care Coordinator · NPI 1952259632

William O Baker is a Case Manager/Care Coordinator in Vallejo, California. Registered with an NPI since 2026.

In the registry since
2026

Practice location PO Box

The provider listed a PO Box rather than a street location, so this is not a walk-in address.

PO Box 5431
Vallejo, CA 94591-0543
Phone: (510) 684-4880
Show map & directions

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

Specialties & licences

Case Manager/Care Coordinator (primary) Taxonomy 171M00000X

Record details

NPI number1952259632
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 19, 2026
Last updated in NPPESMarch 19, 2026
Certification dateMarch 18, 2026
Mailing addressPo Box 5431, Vallejo, CA 94591-0543

Other providers in Vallejo