Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Flanagan, MD

Internal Medicine Physician in Norwich, CT · enumerated 2006.

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

National Provider Identifier

1407968639

Verified

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Registry record

Entity type Individual (Type 1)

Name Katherine Flanagan

Credential MD

Sex Female

Practice address 326 Washington St, William W Backus Hospital, Norwich, CT, 06360

Phone (860) 889-8331

Enumeration date Sep 1, 2006

Last updated in NPPES May 16, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 1389477 (CT) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 38947 (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
2V7782	Other	-	HEALTHNET
010038947CT01	Other	-	ANTHEM BCBS

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 Katherine Flanagan practice?

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

What is the NPI number for Katherine Flanagan?

The National Provider Identifier (NPI) for Katherine Flanagan is 1407968639, 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 2017-05-16.