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

Marilyn Gay Duff, MSW, LICSW

Individual provider Clinical Social Worker · NPI 1871606814

Marilyn Gay Duff, MSW, LICSW is a Clinical Social Worker in Tacoma, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.
LICSW — Licensed Independent Clinical Social Worker
The title some states use for an independently practising clinical social worker.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

9600 Veterans Dr SW Poc Bldg 61C
Tacoma, WA 98493-5000
Phone: (253) 583-1648
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LW00007888 (WA)

Record details

NPI number1871606814
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW , LICSW
Sole proprietorNo
NPI enumeratedAugust 16, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Tacoma