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

Donald George Cook

Clinical Social Worker in Great Barrington, MA · enumerated 2018.

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

National Provider Identifier

1891278586

Verified

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Registry record

Entity type Individual (Type 1)

Name Donald George Cook

Sex Male

Practice address Great Barrington, MA, 01230

Phone (413) 528-4014

Enumeration date Sep 10, 2018

Last updated in NPPES Sep 10, 2018

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 112163 (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.

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Frequently asked questions

How do I verify Donald Cook's NPI record?

Cross-check NPI 1891278586 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891278586 active?

Yes, as of the latest NPPES snapshot, NPI 1891278586 is active (record last updated 2018-09-10).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-10.