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

Individual provider Clinical Social Worker · NPI 1487125738

John Mark Custer, LCSW is a Clinical Social Worker in Portland, Oregon. Practices as a sole proprietor. Licensed in Oregon.

Licensed in
OR
In the registry since
2018
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

3550 N Interstate Ave
Portland, OR 97227-1196
Phone: (503) 388-0042
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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 1462 (OR)

Record details

NPI number1487125738
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedDecember 16, 2018
Last updated in NPPESDecember 16, 2018
Mailing address7224 Sw Capitol Hwy, Portland, OR 97219-2429

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