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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. MAIRE H OKONIEWSKI DO
NPI 1437655016
Internal Medicine - Hematology & Oncology in Westwood, KS

Active since April 03, 2018PECOS Enrolled
2650 SHAWNEE MISSION PKWY, WESTWOOD, KS 66205(913) 588-1227 Get Directions Write a Review

NPPES record last updated: June 26, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Oct 10, 2019, Sep 29, 2019 (2 updates tracked since 2019).

About Dr. Maire H Okoniewski Do NPPES

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

DR. MAIRE H OKONIEWSKI DO (NPI 1437655016) is an individual hematology & oncology provider in Westwood, Kansas, licensed in Kansas (05-53066) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437655016
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameDR. MAIRE H OKONIEWSKICredential: DO
Location Address2650 SHAWNEE MISSION PKWYWestwood, KS 66205-2003
Mailing Address3901 Rainbow Blvd # Ms 2027Kansas City, KS 66160-8500 · (913) 588-3974 · Fax (913) 588-6055
Phone(913) 588-1227
Sole ProprietorNo
Enumeration DateApril 3, 2018
Last NPPES UpdateJune 26, 20262 updates tracked since enumeration
NPPES CertifiedJune 26, 2026
✔ NPI 1437655016 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in KS · 05-53066
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
2650 SHAWNEE MISSION PKWY, Westwood, KS 66205
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Maire H Okoniewski Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 66205 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$161.67 typical visit price
range $53.00 – $161.67
Typical copayment $40.41 (range $13.25 – $40.41)
Most-billed visit code 99205
Established Patient
$94.12 typical visit price
range $16.88 – $132.11
Typical copayment $23.53 (range $4.22 – $33.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

DR. DANIEL HUNTER CLAUSING M.D.
Internal Medicine (Hematology & Oncology)
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-0348
DR. AUNG TUN M.D
Internal Medicine (Hematology)
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-5000
MAGNUS CHIMA NWORA DO
Internal Medicine
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-9800
MRS. BERNADETTE FISHER
Registered Nurse
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-1227
NIRMALA GHIMIREY DO
Internal Medicine (Hematology & Oncology)
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-0348
JOHN J. MAY M.D.
Internal Medicine
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-9800
JULIANA FREIRE OLIVEIRA APRN
Nurse Practitioner (Family)
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-1227
DR. LUKE V. SELBY MD, MS
Surgery (Surgical Oncology)
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 66205
Johnson County (913) 588-7750

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 Maire Okoniewski's NPI number?

The NPI number for Maire Okoniewski is 1437655016. It was assigned to this individual provider in the NPPES registry on April 3, 2018.

Where is Maire Okoniewski located?

Maire Okoniewski practices at 2650 Shawnee Mission Pkwy, Westwood, KS 66205. The listed phone number is (913) 588-1227.

What is Maire Okoniewski's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Maire Okoniewski enrolled in Medicare?

Yes. Maire Okoniewski is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maire Okoniewski was last updated on June 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 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.