Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gary Williamson
Social Worker in Oneill, NE · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538543228
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Registry record
Entity type Individual (Type 1)
Name Gary Williamson
Sex Male
Practice address 118 N 5th St, Oneill, NE, 68763
Phone (402) 336-4841
Enumeration date Jul 13, 2015
Last updated in NPPES Jul 13, 2015
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
What is the NPI number for Gary Williamson?
The National Provider Identifier (NPI) for Gary Williamson is 1538543228, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gary Williamson practice?
The practice location on file with NPPES is in Oneill, NE. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Counseling & Enrichment Center, Inc Mental Health Counselor · Oneill, NE NPI 1790850568 Bonnie Hines Mental Health Counselor · Oneill, NE NPI 1194939249 Alana Pearson Social Worker · Oneill, NE NPI 1992919088 Rachael Kallhoff Social Worker · Oneill, NE NPI 1114131109 Jacquelyn Meyer Mental Health Counselor · Oneill, NE NPI 1821204074 Kathleen Benson Addiction (Substance Use Disorder) Counselor · Oneill, NE NPI 1265615165 Julie Lingenfelter Mental Health Counselor · Oneill, NE NPI 1013166511 Natalie Bruce Social Worker · Oneill, NE NPI 1609025543
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-13.