Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William J Leix, LBSW
Social Worker in Lapeer, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174621510
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Registry record
Entity type Individual (Type 1)
Name Mr. William J Leix
Credential LBSW
Sex Male
Practice address 1570 Suncrest Dr, Lapeer, MI, 48446
Phone (810) 667-0500
Enumeration date Sep 20, 2006
Last updated in NPPES Aug 28, 2015
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 6802073804 (MI) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 211705242 | Medicaid | MI | - |
| 750910711 | Other | MI | BCBSM |
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
What is the NPI number for William Leix?
The National Provider Identifier (NPI) for William Leix is 1174621510, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Leix practice?
The practice location on file with NPPES is in Lapeer, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → County of Lapeer Community/Behavioral Health Agency · Lapeer, MI NPI 1275585929 Clifford Stevens Clinical Social Worker · Lapeer, MI NPI 1023063203 Gail Stankee Psychiatry Physician · Lapeer, MI NPI 1437255882 Sandra Santarossa Clinical Social Worker · Lapeer, MI NPI 1497852537 Susan Clement Professional Counselor · Lapeer, MI NPI 1588762561 Frederick Schade Clinical Social Worker · Lapeer, MI NPI 1265532741 Duane Laguire-Quinn Social Worker · Lapeer, MI NPI 1093815359 Richard Mcclain Clinical Social Worker · Lapeer, MI NPI 1144321001
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-28.