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

Massiel I Farrell, LMHC, CASAC 2

Mental Health Counselor in Hartsdale, NY · enumerated 2023 · practices at Westchester Jewish Community Services Inc..

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

National Provider Identifier

1639879208

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Registry record

Entity type Individual (Type 1)

Name Massiel I Farrell

Credential LMHC, CASAC 2

Sex Female

Practice address Hartsdale, NY, 10530

Phone (914) 761-0600

Enumeration date Mar 3, 2023

Last updated in NPPES May 8, 2023

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 34775 (NY) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 010780 (NY) 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 Massiel Farrell's NPI record?

Cross-check NPI 1639879208 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639879208 active?

Yes, as of the latest NPPES snapshot, NPI 1639879208 is active (record last updated 2023-05-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-08.