Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Steven E Hartlage, LSW

Social Worker in Portsmouth, OH · enumerated 2007.

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

National Provider Identifier

1679756647

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Registry record

Entity type Individual (Type 1)

Name Mr. Steven E Hartlage

Credential LSW

Sex Male

Practice address 901 Washington St, Portsmouth, OH, 45662

Phone (740) 355-8606

Fax (740) 353-1662

Enumeration date Dec 12, 2007

Last updated in NPPES Mar 2, 2021

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers Primary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License S-0020899 (OH) Secondary

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

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.

What specialty is Steven Hartlage?

Steven Hartlage 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-02.