Onachukwu G. Osaji, M.D.
Family Medicine Physician · Mahomet, IL
Onachukwu G. Osaji, M.D. is a family medicine physician with a practice address in Mahomet, Illinois, and NPI 1447269113, issued on Aug 5, 2006. Check the license (Illinois 036-114516, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Onachukwu G. Osaji
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036-114516 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Commercial Dr, Mahomet, IL 61853
- Phone
- (217) 366-6104
- Enumerated
- Aug 5, 2006
- Record last updated
- Jan 5, 2022
- Fax
- (217) 366-6106
- Medicaid ID
- 1447269113 1 IL
- Medicare enrollment
- Enrolled (PECOS I20051101001140); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 1001 Commercial Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dawn Brunner, MDFamily Medicine Physician1063643187
- Charles Buchanan, M.D.Family Medicine Physician1184631632
- Daniel Deem, M.D.Internal Medicine Physician1487948386
- Michael Kuhlenschmidt, M.D.Internal Medicine Physician1588046288
- Michael Palazzolo, M.D.Pediatrics Physician1427065028
- Carla Samuel-Parks, MDFamily Medicine Physician1326245655
Verify Onachukwu G. Osaji 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 036-114516Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average family medicine physician in 2024
4,838 Medicare Part D claims for 344 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 184 claims were for opioids.
Most prescribed
- Atorvastatin Calcium234 claims
- Levothyroxine Sodium233 claims
- Lisinopril188 claims
- Rosuvastatin Calcium156 claims
- Amlodipine Besylate125 claims
- Metoprolol Succinate121 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: $208.94
11 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Christie Clinic, PLLCMahomet, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Onachukwu G. Osaji among 6,215 family medicine physician records in Illinois
Onachukwu G. Osaji, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1999 · median 2006 among the 3,714 with a school on file
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 family medicine physician records list a practice address in Mahomet
They are 14 of the 139 NPPES records with a practice address in Mahomet, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Mahomet → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nicole Arnold, D.O.Mahomet, IL 618531477993053
- Dawn Brunner, MDMahomet, IL 618531063643187
- Charles Buchanan, M.D.Mahomet, IL 618531184631632
- Christine Henrichs, MDMahomet, IL 618531619908662
- Katherine Loutrel, M.D.Mahomet, IL 618531013934991
- Linah Mairura, M.D.Mahomet, IL 618531790128098
- Randall Megeff, MDMahomet, IL 618531083663918
- Christopher Nelson, MDMahomet, IL 618531083669519
Common questions
What is Onachukwu G. Osaji, M.D.'s NPI number?
Onachukwu G. Osaji, M.D.'s National Provider Identifier (NPI) is 1447269113, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Onachukwu G. Osaji, M.D. located?
The NPPES record lists a practice address at 1001 Commercial Dr, Mahomet, IL, 61853. Phone: (217) 366-6104. Providers update this record themselves, so call before visiting.
How can I verify Onachukwu G. Osaji, M.D.'s license?
NPPES lists Illinois license number 036-114516, 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 Onachukwu G. Osaji, M.D. prescribe under Medicare Part D?
In 2024, Onachukwu G. Osaji, M.D. had 4,838 Medicare Part D claims for 344 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.