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

Katherine I. Thonis, LLC

Organization Clinical Social Worker · NPI 1982970885

Katherine I. Thonis, LLC is a Clinical Social Worker in Manchester, New Hampshire. Licensed in New Hampshire. Registered with an NPI since 2012.

Licensed in
NH
In the registry since
2012
Specialties on file
2
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

250 Commercial St Ste # 1012 B
Manchester, NH 03101-1142
Phone: (603) 801-2732
Fax: (603) 206-5621
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
Mental Health Clinic/Center (Including Community Mental Health Center) Taxonomy 261QM0801X · Licence 1242 (NH)

Record details

NPI number1982970885
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Katherine Thonis — Lscw · (603) 801-2732
Other names Mill Creek Counseling
NPI enumeratedMarch 26, 2012
Last updated in NPPESSeptember 27, 2021
Certification dateSeptember 27, 2021
Mailing address250 Commercial St Ste 211, Manchester, NH 03101-1142

Other providers in Manchester