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

Ms. Karen Mary Hahn, REGISTERED NURSE

Registered Nurse in Cincinnati, OH · enumerated 2008 · practices at The Christ Hospital.

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

National Provider Identifier

1740441856

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Karen Mary Hahn

Credential REGISTERED NURSE

Sex Female

Practice address Cincinnati, OH, 45229

Phone (513) 309-4306

Enumeration date Jun 20, 2008

Last updated in NPPES Jun 20, 2008

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 450779 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Karen Hahn's NPI record?

Cross-check NPI 1740441856 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1740441856 active?

Yes, as of the latest NPPES snapshot, NPI 1740441856 is active (record last updated 2008-06-20).

Other providers at this practice address

Browse all →

The Christ Hospital General Acute Care Hospital · Cincinnati, OH NPI 1912232794

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-20.