Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph Leonard Maddi, M.D.

Cardiovascular Disease Physician in Amherst, NY · enumerated 2006 · practices at Joseph L. Maddi, Physician, P.C..

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

National Provider Identifier

1992761266

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Registry record

Entity type Individual (Type 1)

Name Joseph Leonard Maddi

Credential M.D.

Sex Male

Practice address 4225 Maple Rd, Amherst, NY, 14226

Phone (716) 834-0221

Fax (716) 834-0222

Enumeration date Apr 25, 2006

Last updated in NPPES May 28, 2010

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 149577-1 (NY) 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
01024840	Medicaid	NY	-
2107103	Other	NY	INDEPENDENT HEALTH
000502386008	Other	NY	BLUE CROSS BLUE SHIELD
00010108705	Other	NY	UNIVERA

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

What specialty is Joseph Maddi?

Joseph Maddi is registered in NPPES with the primary taxonomy of Cardiovascular Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Joseph L. Maddi, Physician, P.C. Cardiovascular Disease Physician · Amherst, NY NPI 1073795217 Jerome Rutowski Family Nurse Practitioner · Amherst, NY NPI 1780996769

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-28.