Clayton Kane Oakley, DO, MS, MA

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

DO-55620 Issued in IA

Practice address

411 Laurel St Ste A300
Des Moines, IA 50314-3030

Phone

(515) 282-2921

Fax

(515) 643-8819

NPI assigned

Jun 20, 2019

Last updated

Sep 23, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in NE

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy, Master of Arts, Master of Science

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Unmc Physicians

  • Multi-Specialty Clinic/Center
  • Omaha, NE
  • NPI 1417912114
  Medicare reassignment NPD
• State University of Iowa

  dba University of Iowa Health Care

  • Family Medicine Physician
  • Iowa City, IA
  • NPI 1477554814

  Internal Medicine

  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1560988800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790121600000",
    "number": "1023678166",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 HAWKINS DR",
            "city": "IOWA CITY",
            "state": "IA",
            "postal_code": "522421009",
            "telephone_number": "515-282-2921",
            "fax_number": "515-643-8819"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "411 LAUREL ST STE A300",
            "city": "DES MOINES",
            "state": "IA",
            "postal_code": "503143030",
            "telephone_number": "515-282-2921",
            "fax_number": "515-643-8819"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1950 SW Magazine Rd",
            "address_purpose": "LOCATION",
            "city": "Ankeny",
            "state": "IA",
            "postal_code": "500232977",
            "country_code": "US",
            "telephone_number": "515-282-2921",
            "fax_number": "515-643-8819",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "12495 University Ave Ste 200",
            "address_purpose": "LOCATION",
            "city": "Clive",
            "state": "IA",
            "postal_code": "503258290",
            "country_code": "US",
            "telephone_number": "515-223-6605",
            "fax_number": "515-643-8819",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "110 E Court Ave",
            "address_purpose": "LOCATION",
            "city": "Des Moines",
            "state": "IA",
            "postal_code": "503092053",
            "country_code": "US",
            "telephone_number": "515-282-2921",
            "fax_number": "515-643-8819",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2565 SE Encompass Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "Waukee",
            "state": "IA",
            "postal_code": "502631299",
            "country_code": "US",
            "telephone_number": "515-282-1299",
            "fax_number": "515-282-2095",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OAKLEY",
        "first_name": "CLAYTON",
        "middle_name": "KANE",
        "credential": "DO, MS, MA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-06-20",
        "last_updated": "2026-09-23",
        "certification_date": "2026-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NE",
            "license": "8551",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IA",
            "license": "DO-55620",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "IA",
            "license": "DO-55620",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Jennifer O'Toole
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• Calista Stephanie Oberhelman, LMSW
• Jacob L Obholz, DO
• Janice Obriant, LISW
• Obstetrical Gynecological Associates of Des Moines PLC
• Occupational Health Center PC

• Hematology & Oncology Physician in Des Moines, IA
• Providers in Des Moines, IA by specialty
• Hematology & Oncology Physician in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.