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

Ann R Costello, MD

Internal Medicine Physician in Ithaca, NY · enumerated 2005.

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

National Provider Identifier

1235125626

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Registry record

Entity type Individual (Type 1)

Name Ann R Costello

Credential MD

Sex Female

Practice address Ithaca, NY, 14850

Phone (607) 273-2811

Fax (607) 273-1170

Enumeration date Sep 21, 2005

Last updated in NPPES Jan 24, 2024

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

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 149866 (NY) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 149866 (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
000910796001	Other	NY	HEALTHNOW
00715215	Medicaid	NY	-
4217986	Other	NY	AETNA

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 Ann Costello?

Ann Costello 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.

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 →

Elizabeth Hoffmeier Family Nurse Practitioner · Ithaca, NY NPI 1629064142 John Costello Internal Medicine Physician · Ithaca, NY NPI 1871589267 Lucia Jander Internal Medicine Physician · Ithaca, NY NPI 1851368732 Ann R. Costello, MD Internal Medicine Physician · Ithaca, NY NPI 1528269230 Jessa Dauria Adult Health Nurse Practitioner · Ithaca, NY NPI 1013244722 Stephanie Gumaer Clinical Social Worker · Ithaca, NY NPI 1629378062 Judith Griffin Internal Medicine Physician · Ithaca, NY NPI 1356629240 Ann R Costello Non-Pharmacy Dispensing Site · Ithaca, NY NPI 1144635087

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-24.