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 provides Clinical Social Worker services 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.

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Practice location Address checks out

250 Commercial St Ste # 1012 B
Manchester, NH 03101-1142
Phone: (603) 801-2732
Fax: (603) 206-5621
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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
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

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