Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marguerite E Macarthur, LICSW
Clinical Social Worker in Wolfeboro Falls, NH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841341211
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1042398 | Other | - | CIGNA BEHAVIORAL HEALTH |
| 14Y001739NY03 | Other | - | BEHAVIOR HEALTH NETWORK |
| 30424053 | Medicaid | NH | - |
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.
Frequently asked questions
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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.