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

Ms. Nancy B. Lax, MSW

Clinical Social Worker in Harvard, MA · enumerated 2006 · practices at Crossroads Counseling Associates.

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

National Provider Identifier

1063574770

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Registry record

Entity type Individual (Type 1)

Name Ms. Nancy B. Lax

Credential MSW

Sex Female

Practice address Harvard, MA, 01451

Phone (978) 772-6100

Fax (978) 772-6980

Enumeration date Dec 16, 2006

Last updated in NPPES Jan 7, 2015

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 104752 (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 specialty is Nancy Lax?

Nancy Lax is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Carl Torrice Clinical Social Worker · Harvard, MA NPI 1194824011 Carol Litzler Clinical Social Worker · Harvard, MA NPI 1801989132 Crossroads Counseling Associates Clinical Social Worker · Harvard, MA NPI 1538211198 Joseph Mendola Clinical Psychologist · Harvard, MA NPI 1396860623

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-07.