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

Timothy J Petersen, PHD

Psychologist in Boston, MA · enumerated 2005.

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

National Provider Identifier

1295737898

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Registry record

Entity type Individual (Type 1)

Name Timothy J Petersen

Credential PHD

Sex Male

Practice address Boston, MA, 02114

Phone (617) 643-0262

Fax (617) 726-2992

Enumeration date Aug 12, 2005

Last updated in NPPES Sep 4, 2008

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

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 7731 (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
0503002	Medicaid	MA	-

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 Timothy Petersen's NPI record?

Cross-check NPI 1295737898 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1295737898 active?

Yes, as of the latest NPPES snapshot, NPI 1295737898 is active (record last updated 2008-09-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-04.