Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marc David Kirshner, D.C.

Chiropractor in Stamford, CT · enumerated 2006.

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

National Provider Identifier

1780778944

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Registry record

Entity type Individual (Type 1)

Name Dr. Marc David Kirshner

Credential D.C.

Sex Male

Practice address 1867 Summer St, Stamford, CT, 06905

Phone (203) 975-7000

Fax (203) 975-0876

Enumeration date Oct 3, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 000952 (CT) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
050000952CT01	Other	CT	BLUE CROSS
4125747	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.

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Frequently asked questions

What specialty is Marc Kirshner?

Marc Kirshner is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.