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

Ann Williamson

Individual provider Clinical Social Worker · NPI 1770886236

Ann Williamson is a Clinical Social Worker in Chelmsford, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2010.

Licensed in
MA
In the registry since
2010

Practice location Address checks out

7 Summer St Ste 19
Chelmsford, MA 01824-3076
Phone: (978) 256-1444
Fax: (978) 441-1773
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 115210 (MA)

Record details

NPI number1770886236
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedDecember 6, 2010
Last updated in NPPESDecember 6, 2010
Mailing address7 Summer St, Suite 19, Chelmsford, MA 01824-3076

Other providers in Chelmsford