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

Mrs. Jennifer L. Kleckner, RN, IBCLC

Lactation Consultant (Registered Nurse) in Sycamore, IL · enumerated 2023.

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

National Provider Identifier

1598450991

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Registry record

Entity type Individual (Type 1)

Name Mrs. Jennifer L. Kleckner

Credential RN, IBCLC

Sex Female

Practice address Sycamore, IL, 60178

Phone (815) 343-3623

Enumeration date Apr 10, 2023

Last updated in NPPES Apr 10, 2023

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

Taxonomy & licenses

174N00000X Lactation Consultant (Non-RN) Other Service Providers Secondary

163WL0100X Lactation Consultant (Registered Nurse) Nursing Service Providers · License 041351296 (IL) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 1598450991 active?

Yes, as of the latest NPPES snapshot, NPI 1598450991 is active (record last updated 2023-04-10).

How do I verify Jennifer Kleckner's NPI record?

Cross-check NPI 1598450991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-10.