Summary

Dr. Mary Dean Onayemi is an obstetrician and gynecologist who has dedicated 46 years to women's healthcare. She earned her medical degree from the University of Illinois at Chicago College of Medicine and completed her residency at Cook County Hospital. Her extensive experience spans nearly five decades of caring for women through all stages of life. Dr. Onayemi is fluent in both English and Spanish.

Dr. Onayemi practices at locations in Chicago, Illinois, and maintains an affiliation with Advocate Trinity Hospital. She specializes in managing pregnancy care and addressing complications such as vaginal bleeding during pregnancy. Her practice also focuses on maternal mental health, including screening for and treating antepartum depression. Patients appreciate her comprehensive approach to preventive care through services like depression screening and vaccination programs including Tdap and flu vaccines. Dr. Onayemi has earned an average rating of 3.7 from her patients.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.7
  • 46 years of experience
  • speaks English, Spanish
  • Cook County Hospital
  • 3 written reviews
  • 1 specialty
  • 11 areas of expertise
  • 1 hospital affiliation
  • 2 office locations
  • Female

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Mary Ann Dean Onayemi has 2 locations

Chicago Family Health Center

9119 S Exchange AveChicago, IL 60617
Mon8:30 am - 8:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 8:00 pm
Thu8:30 am - 8:00 pm
Fri8:30 am - 5:00 pm
Sat8:30 am - 1:00 pm
SunClosed

Western Diversey Surgical Center

2744 N Western AveChicago, IL 60647
Mon8:00 am - 6:00 pm
Tue8:00 am - 6:00 pm
Wed8:00 am - 6:00 pm
Thu8:00 am - 6:00 pm
Fri8:00 am - 6:00 pm
Sat8:00 am - 3:00 pm
SunClosed

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Dr. Mary Ann Dean Onayemi, MD
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Dr. Mary Ann Dean Onayemi, MDDr. Lyndon Douglas Taylor, MDDr. Marsha E Gorens, MDDr. Jon Mario Simonelli, MD
Obstetrics & GynecologyObstetrics & GynecologyObstetrics & GynecologyObstetrics & Gynecology
Accepts New Patients Accepts New Patients Accepts New Patients
3.7 
4.2 
46 Years of Experience 48 Years of Experience 46 Years of Experience 52 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English, Spanish, Russian Speaks English, Spanish Speaks English
Chicago , ILOak Park , ILChicago , ILChicago , IL
Med School: University Of Illinois At Chicago College Of Medicine Med School: Universidad Autonoma De Guadalajara Facultad De Medicina Med School: University Of Illinois At Chicago College Of Medicine Med School: Chicago Medical School At Rosalind Franklin University-Medicine & Sciences
Current Profile
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Insurance Plans Accepted by Dr. Mary Ann Dean Onayemi

  • Accepts Medicare

Medical Specialties

Dr. Mary Ann Dean Onayemi has the following specialty

Specialty Expertise

Dr. Mary Ann Dean Onayemi has the following 11 areas of expertise

  • Birth Control
  • C-section
  • Child Birth
  • Hot Flashes
  • Infertility
  • Menopause
  • Menstrual Pain
  • Pap Smear
  • Pelvic Exam
  • Pregnancy
  • Women's Health

Certifications, License, & Education

46 Years Experience

Dr. Mary Ann Dean Onayemi holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at Cook County Hospital.

Medical School

Graduated from University Of Illinois At Chicago College Of Medicine in 1980.

NPI Number

Dr. Dean Onayemi's NPI number is 1770518169.

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Frequently Asked Questions

Is Dr. Mary Dean Onayemi accepting new patients?
Dr. Mary Dean Onayemi is accepting new patients on Vitals. View Dr. Mary Dean Onayemi's profile on Vitals to make an appointment.
Which hospitals is Dr. Mary Dean Onayemi affiliated with?
Dr. Mary Dean Onayemi is affiliated with Advocate Trinity Hospital.
How can I make an appointment with Dr. Mary Dean Onayemi?
You can find contact information for Dr. Mary Dean Onayemi here on Vitals.
Does Dr. Mary Dean Onayemi accept virtual/telehealth appointments?
Dr. Mary Dean Onayemi has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. Mary Dean Onayemi accept my insurance?
You can see the insurance plans that Dr. Mary Dean Onayemi accepts on their Vitals profile.

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