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

Barbara Kay Darby I

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1023782257

Barbara Kay Darby I is an Addiction (Substance Use Disorder) Counselor in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2021

Practice location Address checks out

1111 Market St
San Francisco, CA 94103-1509
Phone: (415) 863-3883
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence R1439800721 (CA)

Record details

NPI number1023782257
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedAugust 2, 2021
Last updated in NPPESAugust 2, 2021
Certification dateAugust 2, 2021

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