Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Karen Lynn Sleeman, N.P.

Adult Health Nurse Practitioner in Jamestown, NY · enumerated 2005.

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

National Provider Identifier

1275532228

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Registry record

Entity type Individual (Type 1)

Name Mrs. Karen Lynn Sleeman

Credential N.P.

Sex Female

Practice address 21 Porter Avenue, Jamestown, NY, 14701

Phone (716) 664-1909

Fax (716) 664-2214

Enumeration date Jul 20, 2005

Last updated in NPPES May 5, 2014

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F303471 (NY) 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

Other identifiers

Identifier	Type	State	Issuer
F303471	Other	NY	NEW YORK LICENSE

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 is the NPI number for Karen Sleeman?

The National Provider Identifier (NPI) for Karen Sleeman is 1275532228, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karen Sleeman practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-05.