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

Dr. Thomas John Deters, PHD

Forensic Psychologist in Cambridge, MA · enumerated 2005.

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

National Provider Identifier

1851376578

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas John Deters

Credential PHD

Sex Male

Practice address Cambridge, MA, 02140

Phone (617) 661-7516

Fax (617) 661-7516

Enumeration date Dec 15, 2005

Last updated in NPPES Sep 11, 2025

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 3637 (MA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 353 (NH) Secondary

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 3637 (MA) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 3637 (MA) Secondary

103TF0200X Forensic Psychologist Behavioral Health & Social Service Providers · License 3637 (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
W03667	Other	-	BCBS

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

What specialty is Thomas Deters?

Thomas Deters is registered in NPPES with the primary taxonomy of Forensic Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.