Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Carolyn Langelier, M.D.

Internal Medicine Physician in Darien, CT · enumerated 2012.

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

National Provider Identifier

1780930933

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn Langelier

Credential M.D.

Sex Female

Practice address Darien, CT, 06820

Phone (203) 655-1486

Fax (203) 655-3453

Enumeration date Jul 25, 2012

Last updated in NPPES Mar 7, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 041146 (CT) Primary

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
041146	Other	CT	LICENSE
01755444	Medicaid	NY	-

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 Carolyn Langelier practice?

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

What is the NPI number for Carolyn Langelier?

The National Provider Identifier (NPI) for Carolyn Langelier is 1780930933, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.