NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Katherine Bailey Halstead, FNP

Family Nurse Practitioner in Marcellus, NY · enumerated 2020 · practices at Marcellus Family Medicine Pllc.

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

National Provider Identifier

1528670593

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Registry record

Entity type Individual (Type 1)
Name Mrs. Katherine Bailey Halstead
Credential FNP
Sex Female
Practice address 28 1/2 E Main St, Marcellus, NY, 13108
Phone (315) 673-9926
Fax (315) 673-9465
Enumeration date Aug 20, 2020
Last updated in NPPES Aug 20, 2020

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F346103 (NY) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

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 Katherine Halstead?
Katherine Halstead is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-20.