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

Mr. Robert R Cassidy, LICSW

Addiction (Substance Use Disorder) Counselor in Maynard, MA · enumerated 2009.

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

National Provider Identifier

1669619664

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Registry record

Entity type Individual (Type 1)

Name Mr. Robert R Cassidy

Credential LICSW

Sex Male

Practice address Maynard, MA, 01754

Phone (978) 287-3524

Fax (978) 287-3539

Enumeration date Jan 13, 2009

Last updated in NPPES Jan 13, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 1032541 (MA) Primary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 1032541 (MA) Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 1032541 (MA) Secondary

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 Robert Cassidy's NPI record?

Cross-check NPI 1669619664 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669619664 active?

Yes, as of the latest NPPES snapshot, NPI 1669619664 is active (record last updated 2009-01-13).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-13.