Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin K Grzelak, CDCA

Addiction (Substance Use Disorder) Counselor in Wilmington, OH · enumerated 2017 · practices at Mental Health & Recovery Centers of Clinton County, Inc..

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

National Provider Identifier

1528505153

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Registry record

Entity type Individual (Type 1)

Name Benjamin K Grzelak

Credential CDCA

Sex Male

Practice address 953 S South St, Wilmington, OH, 45177

Phone (937) 383-4441

Fax (937) 383-2916

Enumeration date Jan 20, 2017

Last updated in NPPES Jan 20, 2017

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License CDCA-162499 (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.

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Frequently asked questions

Where does Benjamin Grzelak practice?

The practice location on file with NPPES is in Wilmington, OH. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Benjamin Grzelak?

The National Provider Identifier (NPI) for Benjamin Grzelak is 1528505153, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-20.