Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leslie E Sude, MD

Pediatrics Physician in Madison, CT · enumerated 2006 · practices at Madison Pediatrics LLC.

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

National Provider Identifier

1902964406

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Registry record

Entity type Individual (Type 1)

Name Leslie E Sude

Credential MD

Sex Female

Practice address 105 Wall St, Madison, CT, 06443

Phone (203) 245-7341

Fax (203) 245-0530

Enumeration date Dec 5, 2006

Last updated in NPPES Jun 14, 2016

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 043683 (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
004239118	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

How do I verify Leslie Sude's NPI record?

Cross-check NPI 1902964406 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1902964406 active?

Yes, as of the latest NPPES snapshot, NPI 1902964406 is active (record last updated 2016-06-14).

Other providers at this practice address

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Dia Flanagan Pediatrics Physician · Madison, CT NPI 1184720609 Madison Pediatrics LLC Pediatrics Physician · Madison, CT NPI 1740465780

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-14.