Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathy Sittler, CNS

Clinical Nurse Specialist in Tulsa, OK · enumerated 2006.

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

National Provider Identifier

1891869574

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Registry record

Entity type Individual (Type 1)

Name Kathy Sittler

Credential CNS

Sex Female

Practice address 6465 S Yale Ave, Suite 507, Tulsa, OK, 74136

Phone (918) 481-2760

Fax (918) 481-2775

Enumeration date Nov 17, 2006

Last updated in NPPES Oct 17, 2012

Taxonomy & licenses

364S00000X Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 21481 (OK) Primary

Other identifiers

Identifier	Type	State	Issuer
200023260A	Medicaid	OK	-

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.

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Frequently asked questions

How do I verify Kathy Sittler's NPI record?

Cross-check NPI 1891869574 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891869574 active?

Yes, as of the latest NPPES snapshot, NPI 1891869574 is active (record last updated 2012-10-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-17.