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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. LELAND WAYNE KLAASSEN D.D.S.
NPI 1770576795
Dentist in Olathe, KS

Active since August 24, 2005
407 S CLAIRBORNE RD, SUITE 203, OLATHE, KS 66062(913) 782-1335(913) 782-0062 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Leland Wayne Klaassen D.d.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LELAND WAYNE KLAASSEN D.D.S. (NPI 1770576795) is an individual dentist in Olathe, Kansas, licensed in Kansas (6866) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1770576795
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameDR. LELAND WAYNE KLAASSENCredential: D.D.S.
Location Address407 S CLAIRBORNE RD, SUITE 203Olathe, KS 66062-1723
Mailing Address407 S Clairborne Rd, Suite 203Olathe, KS 66062-1723 · (913) 782-1335 · Fax (913) 782-0062
Phone(913) 782-1335
Fax(913) 782-0062
Sole ProprietorNo
Enumeration DateAugust 24, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1770576795 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in KS · 6866
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
407 S CLAIRBORNE RD, Olathe, KS 66062
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Guardian.Insurance ›

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. GWENYTH GRACE WAGNER
Nurse Practitioner (Adult Health)
407 S CLAIRBORNE RD
OLATHE, KS 66062
Johnson County (913) 393-9921
DR. ELLEN FRANCES BERRY DDS
Dentist (Dental Public Health)
407 S CLAIRBORNE RD, SUITE 104
OLATHE, KS 66062
Johnson County (855) 886-6938
DR. DIANNE S MCHUGH D. O.
Family Medicine
407 S CLAIRBORNE RD, STE 106
OLATHE, KS 66062
Johnson County (913) 829-6601
LEAH D. BURNISON LCAC
Counselor (Addiction (Substance Use Disorder))
407 S CLAIRBORNE RD, SUITE 104
OLATHE, KS 66062
Johnson County (913) 730-3664
DR. LEE EUGENE HUMPHREY DPM
Podiatrist
407 S CLAIRBORNE RD, SUITE 207
OLATHE, KS 66062
Johnson County (913) 764-3120
HEALTH PARTNERSHIP CLINIC, INC.
Clinic/Center (Federally Qualified Health Center (FQHC))
407 S CLAIRBORNE RD, SUITE 104
OLATHE, KS 66062
Johnson County (913) 648-2266
JOY MARTHA WRIGHT
Dental Hygienist
407 S CLAIRBORNE RD
OLATHE, KS 66062
Johnson County (913) 648-2266
DR. BRIAN COLBY LANE D.C.
Chiropractor
407 S CLAIRBORNE RD, SUITE 201
OLATHE, KS 66062
Johnson County (913) 764-7722

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leland Klaassen's NPI number?

The NPI number for Leland Klaassen is 1770576795. It was assigned to this individual provider in the NPPES registry on August 24, 2005.

Where is Leland Klaassen located?

Leland Klaassen practices at 407 S Clairborne Rd Suite 203, Olathe, KS 66062. The listed phone number is (913) 782-1335.

What is Leland Klaassen's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

What insurance does Leland Klaassen accept?

Health plans from Guardian list Leland Klaassen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Leland Klaassen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.