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

Dr. Janet J Leibowitz, PSYD

Clinical Psychologist in Canton, MA · enumerated 2006 · practices at Boston Senior Medicine.

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

National Provider Identifier

1851465876

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Registry record

Entity type Individual (Type 1)

Name Dr. Janet J Leibowitz

Credential PSYD

Sex Female

Practice address Canton, MA, 02021

Phone (781) 828-1222

Enumeration date Nov 20, 2006

Last updated in NPPES Mar 3, 2020

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY20569 (CA) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 8695 (MA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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

What is the NPI number for Janet Leibowitz?

The National Provider Identifier (NPI) for Janet Leibowitz is 1851465876, a Type 1 (individual) record in the CMS NPPES registry.

Where does Janet Leibowitz practice?

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

Other providers at this practice address

Browse all →

Pamela Sinotte Social Worker · Canton, MA NPI 1407880636 Nettie Greenstein Psychologist · Canton, MA NPI 1356376552 Roselle Mann Social Worker · Canton, MA NPI 1245265446 Christopher Pierce Social Worker · Canton, MA NPI 1952336158 Jody Hochschartner-Boyd Clinical Child & Adolescent Psychologist · Canton, MA NPI 1881705903 Alfonso Alvarez Clinical Social Worker · Canton, MA NPI 1043318447 Karen Michelson Social Worker · Canton, MA NPI 1942308374 Paul Davidson Clinical Psychologist · Canton, MA NPI 1013137447

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-03.