Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey S Weiser, MD

Gastroenterology Physician in Farmington, CT · enumerated 2006 · practices at University of Connecticut Health Center.

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

National Provider Identifier

1437253051

Verified

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Registry record

Entity type Individual (Type 1)

Name Jeffrey S Weiser

Credential MD

Sex Male

Practice address 21 South Rd, Ste 100, Farmington, CT, 06032

Phone (860) 409-4567

Fax (860) 409-4846

Enumeration date Sep 12, 2006

Last updated in NPPES Jan 7, 2020

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 035977 (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
001359779	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Jeffrey Weiser practice?

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

What is the NPI number for Jeffrey Weiser?

The National Provider Identifier (NPI) for Jeffrey Weiser is 1437253051, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-07.