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

James Horvitz, PHD

Clinical Psychologist in Stoughton, MA · enumerated 2006.

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

National Provider Identifier

1649350240

Verified

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Registry record

Entity type Individual (Type 1)

Name James Horvitz

Credential PHD

Sex Male

Practice address Stoughton, MA, 02072

Phone (781) 682-1060

Fax (781) 682-1061

Enumeration date Oct 17, 2006

Last updated in NPPES Oct 11, 2022

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 1857 (MA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
W01972	Other	MA	BCBS PROVIDER NUMBER
0511595	Medicaid	MD	-
6101040	Other	MA	EVERCARE PROVIDER NUMBER

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 James Horvitz?

The National Provider Identifier (NPI) for James Horvitz is 1649350240, a Type 1 (individual) record in the CMS NPPES registry.

Where does James Horvitz practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-11.