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

Katherine Thonis, LCSW

Individual provider Clinical Social Worker · NPI 1538207477

Katherine Thonis, LCSW is a Clinical Social Worker in Manchester, New Hampshire. Qualified in 1999, 27 years ago. Accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
27
Licensed in
NH
In the registry since
2007
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

250 Commercial St # 2011E
Manchester, NH 03101-1142
Phone: (603) 801-5597
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X (NH)
Clinical Social Worker Taxonomy 1041C0700X · Licence 1242 (NH)

Record details

NPI number1538207477
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedFebruary 2, 2007
Last updated in NPPESAugust 25, 2021
Certification dateAugust 13, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Manchester