NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Lucy S Hall, LICSW

Clinical Social Worker in Lexington, MA · enumerated 2009.

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

National Provider Identifier

1477797918

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Registry record

Entity type Individual (Type 1)
Name Ms. Lucy S Hall
Credential LICSW
Sex Female
Practice address 1040 Waltham St, Lexington, MA, 02421
Phone (781) 761-5103
Enumeration date Apr 28, 2009
Last updated in NPPES Aug 29, 2016

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 115070 (MA) Primary

Other identifiers

Identifier Type State Issuer
1004745 Other MA NHP
1303287 Other MA MBHP
1303287 Medicaid MA -
81263575 Medicaid NH -
042611055 Other MA TAX ID
110113710A Other MA MASSHEALTH PID
0000023532 Other MA BMC
M18633 Other MA BCBS
99618201 Other MA NETWORK HEALTH

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

What is the NPI number for Lucy Hall?
The National Provider Identifier (NPI) for Lucy Hall is 1477797918, a Type 1 (individual) record in the CMS NPPES registry.
Where does Lucy Hall practice?
The practice location on file with NPPES is in Lexington, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-29.