Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gustavo A. Cardenas, M.D.

Internal Medicine Physician in Patchogue, NY · enumerated 2007.

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

National Provider Identifier

1578611737

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Registry record

Entity type Individual (Type 1)

Name Dr. Gustavo A. Cardenas

Credential M.D.

Sex Male

Practice address Patchogue, NY, 11772

Phone (631) 654-1749

Fax (631) 654-1790

Enumeration date Jan 6, 2007

Last updated in NPPES Oct 25, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 112984 (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
1000015665	Other	NY	AFFINITY
0082356	Other	NY	GHI
11-2432871	Other	NY	TAX ID
226752P	Other	NY	HIP
431247	Other	NY	UNITED HEALTHCARE
2375	Other	NY	VYTRA
20502	Other	NY	AETNA
P1233307	Other	NY	OXFORD FREEDOM PLAN

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

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.

What specialty is Gustavo Cardenas?

Gustavo Cardenas is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-25.