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

Timothy G. Lock, PH.D.

Psychologist in Brookfield, CT · enumerated 2007.

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

National Provider Identifier

1720101686

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Registry record

Entity type Individual (Type 1)

Name Timothy G. Lock

Credential PH.D.

Sex Male

Practice address Brookfield, CT, 06804

Phone (203) 775-3820

Fax (203) 775-3820

Enumeration date Apr 7, 2007

Last updated in NPPES Jul 8, 2007

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 002385 (CT) Primary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 014926 (NY) Secondary

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
060002385CT01	Other	CT	ANTHEM BLUE CROSS BLUE SH
P2534362	Other	CT	OXFORD HEALTH PLAN
250250	Other	CT	MHN HMC
2147508	Other	CT	CIGNA BEHAVIORAL HEALTH

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 Timothy Lock?

Timothy Lock is registered in NPPES with the primary taxonomy of 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 2007-07-08.