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Crystal Mackinnon, LCSW

Clinical Social Worker in Groton, CT · enumerated 2011.

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

National Provider Identifier

1275812372

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Registry record

Entity type Individual (Type 1)
Name Crystal Mackinnon
Credential LCSW
Sex Female
Practice address 428 Long Hill Rd Ste 201, Groton, CT, 06340
Phone (860) 333-8765
Fax (833) 204-4896
Enumeration date Aug 8, 2011
Last updated in NPPES Mar 5, 2021

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 008709 (CT) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier Type State Issuer
040400564 Medicaid CT -

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 Crystal Mackinnon?
The National Provider Identifier (NPI) for Crystal Mackinnon is 1275812372, a Type 1 (individual) record in the CMS NPPES registry.
Where does Crystal Mackinnon practice?
The practice location on file with NPPES is in Groton, CT. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-05.