Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sandra J. Mueller, LPC

Professional Counselor in Festus, MO · enumerated 2006.

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

National Provider Identifier

1427111889

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Registry record

Entity type Individual (Type 1)

Name Sandra J. Mueller

Credential LPC

Sex Female

Practice address 227 E Main St, Festus, MO, 63028

Phone (636) 931-2700

Fax (636) 931-2139

Enumeration date Dec 18, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 2000150521 (MO) Primary

LPC — Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC 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 NPI 1427111889 active?

Yes — as of the latest NPPES snapshot, NPI 1427111889 is active (record last updated 2007-07-08).

How do I verify Sandra Mueller's NPI record?

Cross-check NPI 1427111889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.