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

John S Marvin, LCSW

Individual provider Clinical Social Worker · NPI 1336755784

John S Marvin, LCSW is a Clinical Social Worker in Portland, Oregon. Licensed in Oregon and Washington. Registered with an NPI since 2020.

Licensed in
OR, WA
In the registry since
2020
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

1125 SE Madison St Ste 100E
Portland, OR 97214-3600
Phone: (503) 597-8237
Fax: (503) 961-7266
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence L30008 (OR)
Clinical Social Worker Taxonomy 1041C0700X · Licence SWI.LW.70081228 (WA)

Record details

NPI number1336755784
Entity typeIndividual (Type 1)
GenderNot disclosed
Credentials LCSW
Sole proprietorNo
NPI enumeratedSeptember 21, 2020
Last updated in NPPESMarch 18, 2026
Certification dateMarch 18, 2026

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