Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Candace Steen Muller, RN

Registered Nurse in Marshalltown, IA · enumerated 2023.

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

National Provider Identifier

1396441598

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Registry record

Entity type Individual (Type 1)

Name Candace Steen Muller

Credential RN

Sex Female

Practice address 101 Iowa Ave W, Marshalltown, IA, 50158

Phone (515) 699-5999

Enumeration date Jan 31, 2023

Last updated in NPPES Jan 31, 2023

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 137569 (IA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

How do I verify Candace Muller's NPI record?

Cross-check NPI 1396441598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396441598 active?

Yes, as of the latest NPPES snapshot, NPI 1396441598 is active (record last updated 2023-01-31).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-31.