Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Katherine M Marks Cook, LCSW LADC

Clinical Social Worker in Eastport, ME · enumerated 2006.

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

National Provider Identifier

1174603476

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Registry record

Entity type Individual (Type 1)

Name Mrs. Katherine M Marks Cook

Credential LCSW LADC

Sex Female

Practice address 30 Boynton St, Box H Eastport Health Care Inc, Eastport, ME, 04631

Phone (207) 853-6001

Fax (207) 853-4028

Enumeration date Oct 17, 2006

Last updated in NPPES Jun 2, 2010

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License LC2728 (ME) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LC8576 (ME) Primary

Other identifiers

Identifier	Type	State	Issuer
320310099	Medicaid	ME	-

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 specialty is Katherine Marks Cook?

Katherine Marks Cook 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-02.