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

Ms. Katherine A Wittle, RN

Pediatric Clinical Nurse Specialist in Oak Lawn, IL · enumerated 2007.

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

National Provider Identifier

1386830495

Verified

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Registry record

Entity type Individual (Type 1)

Name Ms. Katherine A Wittle

Credential RN

Sex Female

Practice address Oak Lawn, IL, 60453

Phone (708) 684-1646

Fax (708) 684-4068

Enumeration date Sep 21, 2007

Last updated in NPPES Sep 21, 2007

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

Taxonomy & licenses

364SP0200X Pediatric Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 209.006655 (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

Where does Katherine Wittle practice?

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

What is the NPI number for Katherine Wittle?

The National Provider Identifier (NPI) for Katherine Wittle is 1386830495, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-21.