Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Karen K Slattery, FNP

Family Nurse Practitioner in Arnold, MO · enumerated 2008 · practices at St John'S Mercy Medical Group.

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

National Provider Identifier

1619141975

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Registry record

Entity type Individual (Type 1)

Name Ms. Karen K Slattery

Credential FNP

Sex Female

Practice address 18 Fox Valley Ctr, Arnold, MO, 63010

Phone (636) 282-9899

Fax (636) 282-2279

Enumeration date Apr 17, 2008

Last updated in NPPES Apr 17, 2008

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 127212 (MO) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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 Karen Slattery practice?

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

What is the NPI number for Karen Slattery?

The National Provider Identifier (NPI) for Karen Slattery is 1619141975, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

St John'S Mercy Medical Group Family Nurse Practitioner · Arnold, MO NPI 1326174079 Keith Georger Internal Medicine Physician · Arnold, MO NPI 1649581745

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-17.