Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Sarah Ann Kowalczyk, BCBA
Behavior Analyst in Madison, MS · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821545823
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Registry record
Entity type Individual (Type 1)
Name Mrs. Sarah Ann Kowalczyk
Credential BCBA
Sex Female
Practice address 1531 Highland Colony Pkwy, Madison, MS, 39110
Phone (601) 937-8767
Enumeration date Sep 7, 2016
Last updated in NPPES Sep 7, 2016
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-14-16589 (MS) 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.
Frequently asked questions
Is NPI 1821545823 active?
Yes, as of the latest NPPES snapshot, NPI 1821545823 is active (record last updated 2016-09-07).
How do I verify Sarah Kowalczyk's NPI record?
Cross-check NPI 1821545823 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-07.