Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Cathy Lynn Messinger, MSN, APRN

Nurse Practitioner in Olathe, KS · enumerated 2007 · practices at Olathe Health Physicians, Inc..

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

National Provider Identifier

1801090014

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Registry record

Entity type Individual (Type 1)

Name Mrs. Cathy Lynn Messinger

Credential MSN, APRN

Sex Female

Practice address 20805 W 151st St, Suite 400, the Doctors Building II, Olathe, KS, 66061

Phone (913) 780-4900

Enumeration date Jun 12, 2007

Last updated in NPPES Sep 12, 2013

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 53-45637 (KS) Primary

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5345637041 (KS) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 147870 (MO) Secondary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
147870	Other	-	NP LICENSE- MO
200308820B	Medicaid	KS	-
45637	Other	KS	NP LICENSE- KS- ADULT/GERIATRIC
1801090014	Medicaid	MO	-

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

What specialty is Cathy Messinger?

Cathy Messinger is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-12.