Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Kathleen Patricia O'Connor, MS, LPC, ATR

Mental Health Counselor in Milwaukee, WI · enumerated 2011.

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

National Provider Identifier

1023301231

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Registry record

Entity type Individual (Type 1)

Name Ms. Kathleen Patricia O'Connor

Credential MS, LPC, ATR

Sex Female

Practice address Milwaukee, WI, 53222

Phone (414) 466-9450

Fax (414) 466-0730

Enumeration date May 20, 2011

Last updated in NPPES Apr 29, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 4536-125 (WI) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

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

Where does Kathleen O'Connor practice?

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

What is the NPI number for Kathleen O'Connor?

The National Provider Identifier (NPI) for Kathleen O'Connor is 1023301231, 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 2015-04-29.