Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Karin Bonesteel, M.S.W.

Clinical Social Worker in East Sandwich, MA · enumerated 2012.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033472600

Verified

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Registry record

Entity type Individual (Type 1)

Name Karin Bonesteel

Credential M.S.W.

Sex Female

Practice address East Sandwich, MA, 02537

Phone (774) 269-7746

Enumeration date Jun 19, 2012

Last updated in NPPES Jun 19, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 2020893 (MA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Karin Bonesteel?

The National Provider Identifier (NPI) for Karin Bonesteel is 1033472600, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karin Bonesteel practice?

The practice location on file with NPPES is in East Sandwich, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-19.