Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Fiona Ann Kluser Aronberg, ACNP

Acute Care Nurse Practitioner in Washington, MO · enumerated 2008.

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

National Provider Identifier

1396903506

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Registry record

Entity type Individual (Type 1)

Name Ms. Fiona Ann Kluser Aronberg

Credential ACNP

Sex Female

Practice address 901 E 5th St, Washington, MO, 63090

Phone (636) 239-8231

Enumeration date May 26, 2008

Last updated in NPPES Aug 18, 2023

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2003024502 (MO) Primary

Other identifiers

Identifier	Type	State	Issuer
427236500	Medicaid	MO	-

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 Fiona Aronberg?

Fiona Aronberg is registered in NPPES with the primary taxonomy of Acute Care 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-18.