Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Todd Cassese, M.D.

Internal Medicine Physician in Hamden, CT · enumerated 2007.

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

National Provider Identifier

1033311121

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Registry record

Entity type Individual (Type 1)

Name Dr. Todd Cassese

Credential M.D.

Sex Male

Practice address 275 Mount Carmel Avenue, Frank Netter School of Medicine, Hamden, CT, 06518

Phone (203) 582-3544

Fax (203) 582-1418

Enumeration date Jun 1, 2007

Last updated in NPPES Dec 9, 2011

Taxonomy & licenses

202C00000X Independent Medical Examiner Physician Allopathic & Osteopathic Physicians · License 049028 (CT) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD437241 (PA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 049028 (CT) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD437241 (PA) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 049028 (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
824305	Other	PA	B/S AA #
037276	Other	PA	MLHC MEDICARE AA #

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

Is NPI 1033311121 active?

Yes, as of the latest NPPES snapshot, NPI 1033311121 is active (record last updated 2011-12-09).

How do I verify Todd Cassese's NPI record?

Cross-check NPI 1033311121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Jennifer Zitser Clinical Social Worker · Hamden, CT NPI 1679787782

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-09.