Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Tousignant, M.D.

Surgery Physician in South Windsor, CT · enumerated 2008.

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

National Provider Identifier

1386802684

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Registry record

Entity type Individual (Type 1)

Name Mark Tousignant

Credential M.D.

Sex Male

Practice address 2800 Tamarack Ave, Suite 100, South Windsor, CT, 06074

Phone (860) 533-4692

Enumeration date May 23, 2008

Last updated in NPPES May 11, 2016

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 044796 (CT) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 44796 (CT) Primary

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 Mark Tousignant?

The National Provider Identifier (NPI) for Mark Tousignant is 1386802684, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Tousignant practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-11.