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

Individual provider Clinical Social Worker · NPI 1568426799

William Warner Harrison, MSW is a Clinical Social Worker in Portland, Maine. Practices as a sole proprietor. Licensed in Maine.

Licensed in
ME
In the registry since
2006
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

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Practice location Address checks out

205 Ocean Ave
Portland, ME 04103-5742
Phone: (207) 773-7993
Fax: (207) 773-5512
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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 LC414 (ME)

Record details

NPI number1568426799
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW
Sole proprietorYes
NPI enumeratedApril 14, 2006
Last updated in NPPESNovember 30, 2012

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