Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Sullivan Neff, PMHNP

Nurse Practitioner in Caldwell, ID · enumerated 2016.

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

National Provider Identifier

1699120113

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Registry record

Entity type Individual (Type 1)

Name Diana Sullivan Neff

Credential PMHNP

Sex Female

Practice address 808 Cleveland Blvd, Caldwell, ID, 83605

Phone (208) 459-1025

Fax (208) 466-5359

Enumeration date May 3, 2016

Last updated in NPPES Apr 1, 2024

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 324463-3102 (UT) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 324463-4405 (UT) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 67425 (ID) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 67425 (ID) Primary

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 Diana Neff?

Diana Neff 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-01.