Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Seth M Powsner, MD

Q: What is the NPI number for Seth Powsner?

The National Provider Identifier (NPI) for Seth Powsner is 1528056561, a Type 1 (individual) record in the CMS NPPES registry.

Psychiatry Physician in New Haven, CT · enumerated 2005.

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

National Provider Identifier

1528056561

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Registry record

Entity type Individual (Type 1)

Name Seth M Powsner

Credential MD

Sex Male

Practice address 40 Temple St, Suite 6-C, New Haven, CT, 06510

Phone (203) 785-4085

Fax (203) 737-1597

Enumeration date Oct 13, 2005

Last updated in NPPES Jun 27, 2012

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 026707 (CT) Primary

2084P0805X Geriatric Psychiatry Physician Allopathic & Osteopathic Physicians · License 026707 (CT) Secondary

2084P0015X Psychosomatic Medicine Physician Allopathic & Osteopathic Physicians · License 026707 (CT) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
001267071	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

Where does Seth Powsner practice?

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

What is the NPI number for Seth Powsner?

The National Provider Identifier (NPI) for Seth Powsner is 1528056561, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-27.