Individual provider Active NPI

Okechukwu Nwabueze Obi, MD

  • Medical Oncology Physician
  • Las Vegas, NV
National Provider Identifier
1083134704
Registry record updated Feb 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
24703 Issued in NV
Practice address
2300 W Charleston Blvd
Las Vegas, NV 89102-2149
Phone
(702) 724-8787
NPI assigned
Jun 23, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 4, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Oncology Physician 207RX0202X 24703 NV Primary
Internal Medicine Physician 207R00000X 24703 NV
Hematology (Internal Medicine) Physician 207RH0000X 24703 NV
Hematology & Oncology Physician 207RH0003X 036152827 IL

Addresses

Primary practice location

2300 W Charleston Blvd
Las Vegas, NV 89102-2149

Mailing address

PO Box 35380
Las Vegas, NV 89133-5380
Phone (702) 954-7457

Other practice location 1

1400 Pin Oak Dr
Carterville, IL 62918-1600
Phone (618) 985-3333

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address oobi86090@sih.direct-ci.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL, NV2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20230622002111 IL Practitioner - Hematology/Oncology 7012282742 Reassigns benefits to 1 organization
I20231214001241 NV Practitioner - Internal Medicine 7012282742 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Southern Illinois Medical Services NFPGroup PAC ID 3678677390, 331 clinicians
Optum Medical Group Rhodes P CGroup PAC ID 1052390036, 53 clinicians

Practice addresses (Care Compare)

1400 Pin Oak Dr
Carterville, IL 62918-1600
Phone (618) 985-3333

2300 W Charleston Blvd
Las Vegas, NV 89102-2149
Phone (702) 724-8787

Hospital & facility affiliations

  • Memorial Hospital of Carbondale Hospital, Carbondale, IL, CCN 140164
  • Herrin Hospital Hospital, Herrin, IL, CCN 140011
  • St Joseph Memorial Hospital Hospital, Murphysboro, IL, CCN 141334
  • Harrisburg Medical Center Hospital, Harrisburg, IL, CCN 140210

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
036152827ILMDHematology & Oncology Physician
24703NVMDMedical Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Optum Medical Group Rhodes P C Current Accepting new patients
Southern Illinois Medical Services, NFP Internal Medicine CurrentSince Nov 13, 2025 Accepting new patients
Optum Medical Group Rhodes P C CurrentSince Dec 1, 2023 Accepting new patients
Loyola University Medical Center Current Accepting new patients

Locations

2601 W Main St
Carbondale, IL 62901
Phone (618) 351-7300

1400 Pin Oak Dr
Carterville, IL 62918
Phone (618) 529-3159

2160 S 1st Ave
Maywood, IL 60153
Phone (708) 216-4400

58 N Pecos Rd
Henderson, NV 89074
Phone (702) 822-2000

2300 W Charleston Blvd
Las Vegas, NV 89102
Phone (702) 724-8787

Interoperability endpoints

  • Direct secure messaging: oobi86090@sih.direct-ci.com
  • Direct secure messaging: oobi118011@westdirect.optum.com
  • Direct secure messaging: oobi232037@direct.luhs.org
  • Direct secure messaging: obi.okechukwu.p4@direct.uson.nextgenshare.com

Organizations & group practices 4

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

Hospital & facility affiliations 4

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1498176000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770163200000",
    "number": "1083134704",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380",
            "telephone_number": "702-954-7457"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2300 W CHARLESTON BLVD",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891022149",
            "telephone_number": "702-724-8787"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1400 Pin Oak Dr",
            "address_purpose": "LOCATION",
            "city": "Carterville",
            "state": "IL",
            "postal_code": "629181600",
            "country_code": "US",
            "telephone_number": "618-985-3333",
            "fax_number": "618-985-1318",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OBI",
        "first_name": "OKECHUKWU",
        "middle_name": "NWABUEZE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-06-23",
        "last_updated": "2026-02-04",
        "certification_date": "2026-02-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "NV",
            "license": "24703",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NV",
            "license": "24703",
            "primary": false
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "NV",
            "license": "24703",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "IL",
            "license": "036152827",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "oobi86090@sih.direct-ci.com",
            "affiliation": "N",
            "address_1": "1400 Pin Oak Dr",
            "city": "Carterville",
            "state": "IL",
            "country_code": "US",
            "postal_code": "629181600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Las Vegas, NV

Sources for this page

Verify at the official NPI Registry.