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

Derrick Williams

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1326731720

Derrick Williams is an Addiction (Substance Use Disorder) Counselor in San Francisco, California. Licensed in California. Registered with an NPI since 2023.

Licensed in
CA
In the registry since
2023

Practice location Address checks out

1035 Market St
San Francisco, CA 94103-1600
Phone: (415) 487-3000
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 (CA)

Record details

NPI number1326731720
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMay 31, 2023
Last updated in NPPESMay 31, 2023
Certification dateMay 31, 2023

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