Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Courtney, CPNP

Pediatric Nurse Practitioner in Stony Brook, NY · enumerated 2005.

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

National Provider Identifier

1235128638

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Registry record

Entity type Individual (Type 1)

Name Ann Courtney

Credential CPNP

Sex Female

Practice address Health Sciences Center T11-080, Stony Brook, NY, 11794

Phone (631) 444-3429

Fax (631) 444-6045

Enumeration date Oct 18, 2005

Last updated in NPPES Apr 21, 2015

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F381236 (NY) Primary

Other identifiers

Identifier	Type	State	Issuer
02735082	Medicaid	NY	-

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

What specialty is Ann Courtney?

Ann Courtney is registered in NPPES with the primary taxonomy of Pediatric Nurse Practitioner. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-21.