Obiefuna Chinedu Okponyia, MD
Internal Medicine Physician · Carbondale, IL
Obiefuna Chinedu Okponyia, MD is an internal medicine physician with a practice address in Carbondale, Illinois, and NPI 1609505528, issued on Jun 7, 2022. Check the license (Illinois 036.176889, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Obiefuna Chinedu Okponyia
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036.176889 IL
Self-reported in NPPES; status is on the state search - Practice location
- 405 W Jackson St, Carbondale, IL 62901
- Phone
- (618) 942-2171
- Enumerated
- Jun 7, 2022
- Record last updated
- Aug 29, 2025
- Medicare enrollment
- Enrolled (PECOS I20251002001012); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 405 W Jackson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Muhammad Armughan Ali, M.D.Internal Medicine Physician1518588060
- Ahmad Alnasarat, M.DInternal Medicine Physician1568193654
- Oluwatosin Aluko-Olokun, M.D.Emergency Medicine Physician1992168702
- Saad AlviHospitalist Physician1194983981
Verify Obiefuna Chinedu Okponyia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.176889Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
15 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $70.05
3 payments; by number, the most common kind was food and beverage; the largest payer was Eisai Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- 24 ON Physicians PCCarbondale, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Obiefuna Chinedu Okponyia among 7,238 internal medicine physician records in Illinois
Obiefuna Chinedu Okponyia, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 78% of them.
- NPI issued2022 · 78% of these records are older, 18% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2015 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Carbondale
They are 18 of the 1,088 NPPES records with a practice address in Carbondale, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Carbondale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Muhammad Armughan Ali, M.D.Carbondale, IL 629011518588060
- James Clement, M.D.Carbondale, IL 629011588089106
- Benjamin Collie, M.D.Carbondale, IL 629011689029654
- Amber Doyle, D.O.Carbondale, IL 629011992062178
- Ijeamaka Ezebilo, MDCarbondale, IL 629011760010649
- Elbert Fasnacht, MDCarbondale, IL 629011790834828
- Kelly Higgins, MDCarbondale, IL 629011356337133
- Basmah Jilani, MDCarbondale, IL 629011538519046
Common questions
What is Obiefuna Chinedu Okponyia, MD's NPI number?
Obiefuna Chinedu Okponyia, MD's National Provider Identifier (NPI) is 1609505528, issued on Jun 7, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Obiefuna Chinedu Okponyia, MD located?
The NPPES record lists a practice address at 405 W Jackson St, Carbondale, IL, 62901. Phone: (618) 942-2171. Providers update this record themselves, so call before visiting.
How can I verify Obiefuna Chinedu Okponyia, MD's license?
NPPES lists Illinois license number 036.176889, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Obiefuna Chinedu Okponyia, MD prescribe under Medicare Part D?
In 2024, Obiefuna Chinedu Okponyia, MD had 15 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.