Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Duncan B, Seawell, PSY.D.

Clinical Child & Adolescent Psychologist in Hartford, CT · enumerated 2009.

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

National Provider Identifier

1922335439

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Registry record

Entity type Individual (Type 1)

Name Duncan B, Seawell

Credential PSY.D.

Sex Male

Practice address 85 Seymour Street, Hartford Hospital Child Psychiatry, Hartford, CT, 06106

Phone (860) 545-8660

Enumeration date Nov 5, 2009

Last updated in NPPES Apr 6, 2010

Taxonomy & licenses

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License 2971 (CT) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

Other identifiers

Identifier	Type	State	Issuer
008029712	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

Is NPI 1922335439 active?

Yes, as of the latest NPPES snapshot, NPI 1922335439 is active (record last updated 2010-04-06).

How do I verify Duncan Seawell's NPI record?

Cross-check NPI 1922335439 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-06.