KATHERINE THONIS LCSW
NPI 1538207477
Social Worker - Clinical in Manchester, NH
About Katherine Thonis Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE THONIS LCSW (NPI 1538207477) is an individual clinical provider in Manchester, New Hampshire, licensed in New Hampshire (1242) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Katherine Thonis Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Katherine Thonis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Manchester, NH 03101
- Reassigned Medicare billing, New Hampshire enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Katherine Thonis's NPI number?
The NPI number for Katherine Thonis is 1538207477. It was assigned to this individual provider in the NPPES registry on February 2, 2007.
Where is Katherine Thonis located?
Katherine Thonis practices at 250 Commercial St # 2011E, Manchester, NH 03101. The listed phone number is (603) 801-5597.
What is Katherine Thonis's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Katherine Thonis enrolled in Medicare?
Yes. Katherine Thonis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Katherine Thonis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Thonis reassigns Medicare benefits to Katherine I. Thonis, LLC (Manchester, NH). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Thonis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Thonis accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Katherine Thonis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Katherine Thonis was last updated on August 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Katherine Thonis, LCSW · NPI 1538207477
Clinical provider in Manchester, New Hampshire. Individual provider, active in the CMS NPPES registry since February 2, 2007.
## Identity
- **NPI:** 1538207477 (Entity type: Individual)
- **Enumerated:** February 2, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **Sole proprietor:** No
## Practice location
- **Address:** 250 COMMERCIAL ST # 2011E, Manchester, NH 03101-1142
- **Phone:** (603) 801-5597
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Katherine I. Thonis, LLC (NPI 1982970885, Manchester, NH), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** August 25, 2021
- **Other identifiers:** Other 14Y011145NH01 (NH); Medicaid 30423560 (NH)
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Source: [NPI Profile](https://npiprofile.com/npi/1538207477) · Data from the CMS NPPES public registry.