Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Karen W Siegel, MSW LICSW

Social Worker in Chelmsford, MA · enumerated 2006.

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

National Provider Identifier

1548276652

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Registry record

Entity type Individual (Type 1)

Name Ms. Karen W Siegel

Credential MSW LICSW

Sex Female

Practice address 201 Chelmsford St, Family Associates of Merrimack Valley, Chelmsford, MA, 01824

Phone (978) 256-1467

Fax (978) 256-7465

Enumeration date Jul 31, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License MA403152 (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.

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Frequently asked questions

How do I verify Karen Siegel's NPI record?

Cross-check NPI 1548276652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1548276652 active?

Yes, as of the latest NPPES snapshot, NPI 1548276652 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.