Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert I Leventhal, MD

Gastroenterology Physician in Waterbury, CT · enumerated 2006.

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

National Provider Identifier

1275506214

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert I Leventhal

Credential MD

Sex Male

Practice address 1312 W Main St, Ste 101, Waterbury, CT, 06708

Phone (203) 756-6422

Fax (203) 756-2448

Enumeration date Feb 9, 2006

Last updated in NPPES Apr 27, 2018

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 029930 (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
001299305	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.

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Frequently asked questions

How do I verify Robert Leventhal's NPI record?

Cross-check NPI 1275506214 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1275506214 active?

Yes, as of the latest NPPES snapshot, NPI 1275506214 is active (record last updated 2018-04-27).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-27.