Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kristina Marie Diurno, APRN

Nurse Practitioner in Fairfield, CT · enumerated 2023.

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

National Provider Identifier

1861177875

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Registry record

Entity type Individual (Type 1)

Name Kristina Marie Diurno

Credential APRN

Sex Female

Practice address 425 Post Rd, Fairfield, CT, 06824

Phone (475) 210-4727

Enumeration date Jun 19, 2023

Last updated in NPPES Sep 29, 2023

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 12.012304 (CT) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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.

Read the full guide → Validate an NPI →

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 Kristina Diurno?

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

Other providers at this practice address

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Gioia Riccio Diagnostic Radiology Physician · Fairfield, CT NPI 1336146802 Paul Berard Hematology & Oncology Physician · Fairfield, CT NPI 1699773804 Edward Grossman Specialist · Fairfield, CT NPI 1629060827 Richard Lopatin Specialist · Fairfield, CT NPI 1598757403 Kenneth Mauer Specialist · Fairfield, CT NPI 1407848310 Julie Spivack Specialist · Fairfield, CT NPI 1316939226 Eddy Castillo Specialist · Fairfield, CT NPI 1225020134 Emil Blanco Specialist · Fairfield, CT NPI 1134111040

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-29.