Chioma Adaije Onyenwenyi, MD
Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Chioma Adaije Onyenwenyi, MD is an endocrinology, diabetes & metabolism physician with a practice address in Chicago, Illinois, and NPI 1780972182, issued on Jul 19, 2011. Check the license (Illinois 036134539, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Chioma Adaije Onyenwenyi
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 036134539 IL
125.059030 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1901 W. Harrison, Chicago, IL 60612
- Phone
- (312) 864-6000
- Enumerated
- Jul 19, 2011
- Record last updated
- Jan 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20160827000374); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Also registered at 1901 W. Harrison
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alejandro Nieto Dominguez, M.D.Internal Medicine Physician1114665049
Verify Chioma Adaije Onyenwenyi 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 036134539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,955 Medicare Part D claims for 334 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Levothyroxine Sodium241 claims
- Ozempic140 claims
- Jardiance111 claims
- Metformin Hcl Er103 claims
- Alendronate Sodium98 claims
- Atorvastatin Calcium90 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: $146.96
1 payment: food and beverage; the largest payer was Beta Bionics, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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 2 group practices
- Rush Oak Park Physicians Group Center For Diabetes And EndocrineOak Park, IL
- Rush University Medical GroupOak Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chioma Adaije Onyenwenyi among 436 endocrinology, diabetes & metabolism physician records in Illinois
Chioma Adaije Onyenwenyi, MD is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 62% of them.
- NPI issued2011 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2009 · median 2006 among the 295 with a school on file
- Record last updated2024 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Chicago → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Ambika Amblee, MDChicago, IL 606121225090590
- Antonio Bianco, M.D.Chicago, IL 606121720225188
- Yuval Eisenberg, M.D.Chicago, IL 606121366685828
- Leon Fogelfeld, M.D.Chicago, IL 606121699732305
- Rasa Kazlauskaite, MD, MSC, FACEChicago, IL 606121487609954
- Subhash Kukreja, M.D.Chicago, IL 606121962511238
- Evelyn Lacuesta, M.D.Chicago, IL 606121730122672
- Susana Mascarell, M.DChicago, IL 606121700831328
Common questions
What is Chioma Adaije Onyenwenyi, MD's NPI number?
Chioma Adaije Onyenwenyi, MD's National Provider Identifier (NPI) is 1780972182, issued on Jul 19, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Chioma Adaije Onyenwenyi, MD located?
The NPPES record lists a practice address at 1901 W. Harrison, Chicago, IL, 60612. Phone: (312) 864-6000. Providers update this record themselves, so call before visiting.
How can I verify Chioma Adaije Onyenwenyi, MD's license?
NPPES lists Illinois license number 036134539, 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 Chioma Adaije Onyenwenyi, MD prescribe under Medicare Part D?
In 2024, Chioma Adaije Onyenwenyi, MD had 1,955 Medicare Part D claims for 334 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.