Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Elizabeth Klahr, CSAC

Addiction (Substance Use Disorder) Counselor in Milwaukee, WI · enumerated 2008.

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

National Provider Identifier

1689847964

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Elizabeth Klahr

Credential CSAC

Sex Female

Practice address 3801 N 88th St, Milwaukee, WI, 53222

Phone (414) 466-9450

Fax (414) 466-0730

Enumeration date Apr 8, 2008

Last updated in NPPES Apr 8, 2008

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 11342-132 (WI) Primary

104100000X Social Worker Behavioral Health & Social Service Providers · License 6198-120 (WI) Secondary

Other identifiers

Identifier	Type	State	Issuer
39169600	Medicaid	WI	-

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

How do I verify Mary Klahr's NPI record?

Cross-check NPI 1689847964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689847964 active?

Yes, as of the latest NPPES snapshot, NPI 1689847964 is active (record last updated 2008-04-08).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-08.