Obiefuna Chinedu Okponyia, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036.176889 Issued in IL

Practice address

405 W Jackson St
Carbondale, IL 62901-1462

Phone

(618) 942-2171

NPI assigned

Jun 7, 2022

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

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

Specialty

Internal Medicine

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

24 On Physicians PCGroup PAC ID 5698688141, 274 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Herrin Hospital Hospital, Herrin, IL, CCN 140011
• Memorial Hospital of Carbondale Hospital, Carbondale, IL, CCN 140164
• Harrisburg Medical Center Hospital, Harrisburg, IL, CCN 140210
• Heartland Regional Medical Center Hospital, Marion, IL, CCN 140184

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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 and National Provider Directory roles.

• 24 On Physicians, PC

  • Hospitalist Physician
  • Ottawa, IL
  • NPI 1346480431
  Medicare reassignment Care Compare group NPD
• 24 On Physicians, P.C.

  • Hospitalist Physician
  • Attleboro, MA
  • NPI 1790104511
  NPD

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

• Deaconess Regional Healthcare Services Illinois Inc

  • General Acute Care Hospital
  • Marion, IL
  • NPI 1750007266
  Care Compare affiliation
• Harrisburg Medical Center Inc

  • General Acute Care Hospital
  • Harrisburg, IL
  • NPI 1073580130
  Care Compare affiliation
• Southern Illinois Hospital Services

  • General Acute Care Hospital
  • Carbondale, IL
  • NPI 1093801797
  Care Compare affiliation
• Southern Illinois Hospital Services

  • General Acute Care Hospital
  • Herrin, IL
  • NPI 1528158573
  Care Compare affiliation

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

{
    "created_epoch": "1654560000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756425600000",
    "number": "1609505528",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "405 W JACKSON ST",
            "city": "CARBONDALE",
            "state": "IL",
            "postal_code": "629011462",
            "telephone_number": "618-942-2171"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "405 W JACKSON ST",
            "city": "CARBONDALE",
            "state": "IL",
            "postal_code": "629011462",
            "telephone_number": "618-942-2171"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OKPONYIA",
        "first_name": "OBIEFUNA",
        "middle_name": "CHINEDU",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-06-07",
        "last_updated": "2025-08-29",
        "certification_date": "2025-08-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036.176889",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Julie Ann Odonnell, L.C.P.C.
• Madison Odum
• Dois Charles Ogan, DO
• Afia Ohemeng, MD
• Asikhame Ahonkhai Oikeh, M.D.
• Damilola Jane Olatunbosun
• Sarah Mallory Olson
• Oluwatamilore Oluyemi
• Mariessa Lorae Orso, RDH
• Ricardo Ortiz Loubriel, M.D.

• Internal Medicine Physician in Carbondale, IL
• Providers in Carbondale, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 29, 2025; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.