Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Mary R Lesniak
Behavior Technician in Dearborn, MI · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366084873
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Registry record
Entity type Individual (Type 1)
Name Ms. Mary R Lesniak
Sex Female
Practice address 835 Mason St Ste B310, Dearborn, MI, 48124
Phone (734) 713-9020
Enumeration date Oct 16, 2019
Last updated in NPPES Oct 16, 2019
Taxonomy & licenses
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
Where does Mary Lesniak practice?
The practice location on file with NPPES is in Dearborn, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Lesniak?
The National Provider Identifier (NPI) for Mary Lesniak is 1366084873, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Rebecca Feinstein Clinical Social Worker · Dearborn, MI NPI 1629323985 Starfish Family Services Behavior Analyst · Dearborn, MI NPI 1699237586 Acue Parham Behavior Technician · Dearborn, MI NPI 1598328296 Alice Santa Clinical Psychologist · Dearborn, MI NPI 1972160471 Amanda Washnock Behavior Technician · Dearborn, MI NPI 1346802246 Avery Trice Clinical Social Worker · Dearborn, MI NPI 1134759251 Jasmine Guzman Behavior Technician · Dearborn, MI NPI 1962039859 Madeleine Boudreau Social Worker · Dearborn, MI NPI 1154929008
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-16.