Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Holly Ontko

Counselor in Sandusky, OH · enumerated 2013.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1558792523

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Registry record

Entity type Individual (Type 1)

Name Holly Ontko

Sex Female

Practice address 1218 Cleveland Rd, Sandusky, OH, 44870

Phone (419) 626-9156

Enumeration date Dec 2, 2013

Last updated in NPPES Dec 2, 2013

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License C.1300383-TRNE (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1558792523 active?

Yes, as of the latest NPPES snapshot, NPI 1558792523 is active (record last updated 2013-12-02).

How do I verify Holly Ontko's NPI record?

Cross-check NPI 1558792523 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-02.