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

Johnnie Hamilton - Mason, PHD

Individual provider Clinical Social Worker · NPI 1790837409

Johnnie Hamilton - Mason, PHD is a Clinical Social Worker in Boston, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2007
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

42 Seaverns Ave
Boston, MA 02130-2884
Phone: (617) 521-3911
Fax: (614) 521-3980
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 103494 (MA)

Record details

NPI number1790837409
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 16, 2007
Last updated in NPPESMay 21, 2020
Certification dateMay 21, 2020

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