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

Individual provider Clinical Social Worker · NPI 1578929337

Matthew Garthwait is a Clinical Social Worker in Rye, New Hampshire. Practices as a sole proprietor. Licensed in New Hampshire.

Licensed in
NH
In the registry since
2016
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Practice location Address checks out

1245 Washington Rd
Rye, NH 03870-2339
Phone: (603) 969-7842
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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 2399 (NH)

Record details

NPI number1578929337
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJanuary 11, 2016
Last updated in NPPESJanuary 14, 2026
Certification dateJanuary 14, 2026
Mailing address1245 Washington Rd, Rye, NH 03870-2339

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