Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Renee Jillian Seff-Liebowitz, LPC, LMHC

Professional Counselor in Marlboro, NJ · enumerated 2011 · practices at Contemporary Counseling Center.

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

National Provider Identifier

1750673927

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Registry record

Entity type Individual (Type 1)

Name Mrs. Renee Jillian Seff-Liebowitz

Credential LPC, LMHC

Sex Female

Practice address 9 S Main St, Marlboro, NJ, 07746

Phone (917) 647-6119

Enumeration date May 6, 2011

Last updated in NPPES Jul 15, 2011

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 004373 (NY) Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 37PC00425000 (NJ) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

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 Renee Seff-Liebowitz practice?

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

What is the NPI number for Renee Seff-Liebowitz?

The National Provider Identifier (NPI) for Renee Seff-Liebowitz is 1750673927, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-15.