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

John A Sayegh, M.D.

Primary Care Clinic/Center in Olathe, KS · enumerated 2008.

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

National Provider Identifier

1659559391

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Registry record

Entity type Individual (Type 1)

Name John A Sayegh

Credential M.D.

Sex Male

Practice address Olathe, KS, 66061

Phone (913) 764-6913

Fax (913) 782-0679

Enumeration date Feb 5, 2008

Last updated in NPPES Feb 5, 2008

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

Taxonomy & licenses

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities · License 0420642 (KS) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 1659559391 active?

Yes, as of the latest NPPES snapshot, NPI 1659559391 is active (record last updated 2008-02-05).

How do I verify John Sayegh's NPI record?

Cross-check NPI 1659559391 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Sara Tromba Nurse Practitioner · Olathe, KS NPI 1205679214

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-05.