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

CLAYTON KANE OAKLEY DO, MS, MA
NPI 1023678166
Internal Medicine - Hematology & Oncology in Des Moines, IA

Q: What is Clayton Oakley's NPI number?

The NPI number for Clayton Oakley is 1023678166. It was assigned to this individual provider in the NPPES registry on June 20, 2019.

Q: What is Clayton Oakley's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Clayton Oakley was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since June 20, 2019PECOS Enrolled

411 LAUREL ST STE A300, DES MOINES, IA 50314(515) 282-2921(515) 643-8819 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

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About Clayton Kane Oakley Do, Ms, Ma NPPES

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

CLAYTON KANE OAKLEY DO, MS, MA (NPI 1023678166) is an individual hematology & oncology provider in Des Moines, Iowa, licensed in Iowa (DO-55620) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1023678166

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameCLAYTON KANE OAKLEYCredential: DO, MS, MA

Location Address411 LAUREL ST STE A300Des Moines, IA 50314-3030

Mailing Address200 Hawkins DrIowa City, IA 52242-1009 · (515) 282-2921 · Fax (515) 643-8819

Phone(515) 282-2921

Fax(515) 643-8819

Sole ProprietorNo

Enumeration DateJune 20, 2019

Last NPPES UpdateSeptember 23, 2026

NPPES CertifiedSeptember 23, 2026

✔ NPI 1023678166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in IA · DO-55620

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License 8551 (NE), DO-55620 (IA)

411 LAUREL ST STE A300, Des Moines, IA 50314

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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)

Clayton Kane Oakley Do, Ms, Ma 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 50314 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

$161.40 typical visit price

range $52.96 – $161.40

Typical copayment $40.35 (range $13.24 – $40.35)

Most-billed visit code 99205

Established Patient

$94.05 typical visit price

range $16.91 – $131.98

Typical copayment $23.51 (range $4.22 – $32.99)

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.

ANGELA MAKSUTOSKI ARNP, FNP-C

Nurse Practitioner (Family)