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

Dianna L Collier

Individual provider Social Worker · NPI 1255514337

Dianna L Collier is a Social Worker in Concord, California. Practices as a sole proprietor. Registered with an NPI since 2007.

In the registry since
2007

Practice location Address checks out

2425 Bisso Ln #280
Concord, CA 94520-4897
Phone: (925) 646-5122
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X

Record details

NPI number1255514337
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedDecember 11, 2007
Last updated in NPPESDecember 11, 2007
Mailing address37201 Paseo Padre Pkwy, 103, Fremont, CA 94536-2542

Other providers in Concord