Oladele O. Ajao, MD
Internal Medicine Physician · Granite City, IL
Oladele O. Ajao, MD is an internal medicine physician with a practice address in Granite City, Illinois, and NPI 1700829025, issued on Jun 14, 2006. Check the license (Illinois 036108133, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Oladele O. Ajao
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036108133 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Madison Ave, Granite City, IL 62040
- Phone
- (618) 452-3301
- Enumerated
- Jun 14, 2006
- Record last updated
- Mar 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (618) 452-3312
- Medicaid ID
- 036108133 IL
- Medicare enrollment
- Enrolled (PECOS I20031216000728); 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 2100 Madison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Laurie Beebe, MS, RD, LDMetabolic Nutrition Registered Dietitian1295954980
- Mary Bigongiari, CRNACertified Registered Nurse Anesthetist1598740284
- David Bogolub, DOEmergency Medicine Physician1245279181
- Melissa Bounds, NPFamily Nurse Practitioner1831630458
- Timothy Burgess, PTPhysical Therapist1982940078
Verify Oladele O. Ajao 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 036108133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% more Medicare Part D claims than the average internal medicine physician in 2024
6,265 Medicare Part D claims for 390 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 140 claims were for opioids.
Most prescribed
- Atorvastatin Calcium403 claims
- Albuterol Sulfate Hfa232 claims
- Amlodipine Besylate226 claims
- Rosuvastatin Calcium225 claims
- Losartan Potassium196 claims
- Hydrochlorothiazide167 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: $69.24
4 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. 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
- Southern Illinois Health Care Foundation IncGranite City, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oladele O. Ajao among 7,238 internal medicine physician records in Illinois
Oladele O. Ajao, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1992 · median 2003 among the 3,580 with a school on file
- Record last updated2021 · 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).
11 internal medicine physician records list a practice address in Granite City
They are 11 of the 338 NPPES records with a practice address in Granite City, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Granite City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Adams, MDGranite City, IL 620401851383301
- Lawrence Harmon, MDGranite City, IL 620401275526956
- Rod Hartzel, MDGranite City, IL 620401881688745
- Timothy HipskindGranite City, IL 620401265439640
- Jowe Hsieh, MDGranite City, IL 620401285629212
- Prasanna Kumar, M.D.Granite City, IL 620401285639559
- Rajinder Mahay, MDGranite City, IL 620401669490421
- Kanubhai Patel, M.D.Granite City, IL 620401649278185
Common questions
What is Oladele O. Ajao, MD's NPI number?
Oladele O. Ajao, MD's National Provider Identifier (NPI) is 1700829025, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oladele O. Ajao, MD located?
The NPPES record lists a practice address at 2100 Madison Ave, Granite City, IL, 62040. Phone: (618) 452-3301. Providers update this record themselves, so call before visiting.
How can I verify Oladele O. Ajao, MD's license?
NPPES lists Illinois license number 036108133, 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 Oladele O. Ajao, MD prescribe under Medicare Part D?
In 2024, Oladele O. Ajao, MD had 6,265 Medicare Part D claims for 390 beneficiaries; 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.