Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adam Seidner, M.D.

Q: What is the NPI number for Adam Seidner?

The National Provider Identifier (NPI) for Adam Seidner is 1144208240, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in New London, CT · enumerated 2006.

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

National Provider Identifier

1144208240

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Registry record

Entity type Individual (Type 1)

Name Adam Seidner

Credential M.D.

Sex Male

Practice address 325 Montauk Ave, New London, CT, 06320

Phone (860) 344-6300

Fax (860) 344-9249

Enumeration date Jan 9, 2006

Last updated in NPPES Aug 13, 2009

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 030901 (CT) Primary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 030901 (CT) Secondary

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

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 Adam Seidner?

The National Provider Identifier (NPI) for Adam Seidner is 1144208240, a Type 1 (individual) record in the CMS NPPES registry.

Where does Adam Seidner practice?

The practice location on file with NPPES is in New London, 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 2009-08-13.