Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. W. Dean Pfeifer, PHD

Clinical Psychologist in Madison, CT · enumerated 2006.

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

National Provider Identifier

1487628624

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Registry record

Entity type Individual (Type 1)

Name Dr. W. Dean Pfeifer

Credential PHD

Sex Male

Practice address 149 Durham Rd 31, Madison, CT, 06443

Phone (203) 245-1956

Fax (203) 245-6710

Enumeration date Feb 15, 2006

Last updated in NPPES Jul 8, 2015

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 000932 (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
004114352	Medicaid	CT	-

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 W. Dean Pfeifer?

The National Provider Identifier (NPI) for W. Dean Pfeifer is 1487628624, a Type 1 (individual) record in the CMS NPPES registry.

Where does W. Dean Pfeifer practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-08.