NPI Portal NPI Lookup & Verification

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

Ms. Karen Lynn Olsen, NP

Nurse Practitioner in Detroit, MI · enumerated 2006 · practices at Nursing Practice Corporation.

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

National Provider Identifier

1144319583

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Registry record

Entity type Individual (Type 1)
Name Ms. Karen Lynn Olsen
Credential NP
Sex Female
Practice address Detroit, MI, 48202
Phone (313) 577-5041
Fax (313) 577-9581
Enumeration date Oct 12, 2006
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Primary
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 1144319583 active?
Yes, as of the latest NPPES snapshot, NPI 1144319583 is active (record last updated 2007-07-08).
How do I verify Karen Olsen's NPI record?
Cross-check NPI 1144319583 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.