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

Dr. Colleen Keller Dreyfus, PH.D.

Clinical Psychologist in Hartford, CT · enumerated 2006.

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

National Provider Identifier

1073671939

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Colleen Keller Dreyfus

Credential PH.D.

Sex Female

Practice address Hartford, CT, 06114

Phone (860) 571-3880

Enumeration date Dec 4, 2006

Last updated in NPPES Jan 30, 2008

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 001802 (CT) 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
741694	Other	-	MAGELLAN
C009513	Other	-	CHAMPUS
845341	Other	-	FIRST HEALTH
ZS284	Other	-	OXFORD
060001802CT03	Other	-	ANTHEM
080315	Other	-	MHN
121201	Other	-	COMPYSCH
6151571	Other	-	UBH

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

Where does Colleen Dreyfus practice?

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

What is the NPI number for Colleen Dreyfus?

The National Provider Identifier (NPI) for Colleen Dreyfus is 1073671939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Hartford Psychological Services LLC. Clinical Psychologist · Hartford, CT NPI 1649493115 Gail Brooks Clinical Social Worker · Hartford, CT NPI 1174746739 Mabel Toledo Speech-Language Pathologist · Hartford, CT NPI 1871736132 Sph2 Enterprise, LLC General Practice Dentistry · Hartford, CT NPI 1245569748

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-30.