Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kati Mahlmann

Social Worker in Danville, PA · enumerated 2019.

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

National Provider Identifier

1619511409

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Registry record

Entity type Individual (Type 1)

Name Kati Mahlmann

Sex Female

Practice address 100 N Academy Ave, Danville, PA, 17822

Phone (570) 271-6516

Fax (570) 271-5814

Enumeration date Nov 5, 2019

Last updated in NPPES Aug 25, 2020

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License CW020862 (PA) Primary

Other identifiers

Identifier	Type	State	Issuer
103T00000X	Medicaid	PA	-

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 1619511409 active?

Yes, as of the latest NPPES snapshot, NPI 1619511409 is active (record last updated 2020-08-25).

How do I verify Kati Mahlmann's NPI record?

Cross-check NPI 1619511409 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 2020-08-25.