Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Colleen Jillson, LCSW, LADC, CCS

Clinical Social Worker in Windham, ME · enumerated 2012 · practices at Day One.

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

National Provider Identifier

1851665939

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Registry record

Entity type Individual (Type 1)

Name Colleen Jillson

Credential LCSW, LADC, CCS

Sex Female

Practice address 86 Tandberg Trl, Windham, ME, 04062

Phone (207) 893-0386

Enumeration date Mar 7, 2012

Last updated in NPPES Mar 20, 2018

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License LC4982 (ME) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LC17006 (ME) 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
1851665939	Medicaid	ME	-
E400450569	Other	ME	MEDICARE

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

Where does Colleen Jillson practice?

The practice location on file with NPPES is in Windham, ME. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Colleen Jillson?

The National Provider Identifier (NPI) for Colleen Jillson is 1851665939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Day One Children's Substance Abuse Rehabilitation Facility · Windham, ME NPI 1164484093 Erin Lovejoy Clinical Social Worker · Windham, ME NPI 1245305176 Cameron Ives Clinical Social Worker · Windham, ME NPI 1972671089 Meaghan Mcnamara Addiction (Substance Use Disorder) Counselor · Windham, ME NPI 1972875441 William Kueck Clinical Social Worker · Windham, ME NPI 1366785982 Ann Perkins Clinical Social Worker · Windham, ME NPI 1437595709 Claudine Emerson Clinical Social Worker · Windham, ME NPI 1730513292 Stephanie Coreau Clinical Social Worker · Windham, ME NPI 1104252907

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-20.