Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Cyril Vierstra, LSW
Social Worker in Mc Arthur, OH · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942791884
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Registry record
Entity type Individual (Type 1)
Name Cyril Vierstra
Credential LSW
Sex Male
Practice address 314 W Main St, Mc Arthur, OH, 45651
Phone (800) 321-8293
Enumeration date May 26, 2018
Last updated in NPPES Jun 1, 2018
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License S.1000888 (OH) 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
What specialty is Cyril Vierstra?
Cyril Vierstra is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Richard Pleise Addiction (Substance Use Disorder) Counselor · Mc Arthur, OH NPI 1235645045 Ruth Roberts Social Worker · Mc Arthur, OH NPI 1609367549 Takala Reid-Lerum Social Worker · Mc Arthur, OH NPI 1255822193 Maranda Thomas Case Manager/Care Coordinator · Mc Arthur, OH NPI 1023661642 Leslie Blumensheid Social Worker · Mc Arthur, OH NPI 1689344558 Vadamae Counts Community Health Worker · Mc Arthur, OH NPI 1982365391 Tamika Ramage Addiction (Substance Use Disorder) Counselor · Mc Arthur, OH NPI 1174342422
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-01.