Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Oladele O. Ajao, MD

Individual provider Infectious Disease Physician · NPI 1700829025

Dr. Oladele O. Ajao, MD is an Internal Medicine in Granite City, Illinois. Qualified in 1992, 34 years ago. Practices with Southern Illinois Healthcare Foundation Inc, a 118-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
34
Licensed in
IL
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2100 Madison Ave
Granite City, IL 62040-4701
Phone: (618) 452-3301
Fax: (618) 452-3312
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036108133 (IL)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 036108133 (IL)

Record details

NPI number1700829025
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESMarch 26, 2021
Certification dateMarch 26, 2021
Mailing address2100 Madison Ave, Granite City, IL 62040-4701

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Southern Illinois Healthcare Foundation Inc — 118 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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