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

John E Costello, MD

Internal Medicine Physician in Ithaca, NY · enumerated 2005.

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

National Provider Identifier

1871589267

Verified

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Registry record

Entity type Individual (Type 1)

Name John E Costello

Credential MD

Sex Male

Practice address Ithaca, NY, 14850

Phone (607) 273-2811

Fax (607) 273-1170

Enumeration date Sep 21, 2005

Last updated in NPPES Apr 30, 2008

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 149867 (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
00715224	Medicaid	NY	-
4217992	Other	-	AETNA
000910795001	Other	-	HEALTHNOW

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

Where does John Costello practice?

The practice location on file with NPPES is in Ithaca, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Costello?

The National Provider Identifier (NPI) for John Costello is 1871589267, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-30.