Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane M Mahlman, LISW

Social Worker in Georgetown, OH · enumerated 2007.

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

National Provider Identifier

1427106137

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Registry record

Entity type Individual (Type 1)

Name Diane M Mahlman

Credential LISW

Sex Female

Practice address 75 Banting Dr, Georgetown, OH, 45121

Phone (937) 378-4811

Fax (937) 378-4812

Enumeration date Jan 8, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 0007899 (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

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 Diane Mahlman?

Diane Mahlman 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 2007-07-08.