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

Ann Catherine Karabas, NP

Women's Health Nurse Practitioner in Washington, IL · enumerated 2015 · practices at Professional Therapy Services, Inc..

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

National Provider Identifier

1689049421

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Registry record

Entity type Individual (Type 1)

Name Ann Catherine Karabas

Credential NP

Sex Female

Practice address Washington, IL, 61571

Phone (309) 643-6185

Enumeration date Dec 4, 2015

Last updated in NPPES Jun 29, 2026

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

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71006828A (IN) Primary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209013490 (IL) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

Is NPI 1689049421 active?

Yes, as of the latest NPPES snapshot, NPI 1689049421 is active (record last updated 2026-06-29).

How do I verify Ann Karabas's NPI record?

Cross-check NPI 1689049421 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 2026-06-29.