About
Dr. Omomengbe Oni is a double board-certified Family and Obesity Medicine physician and founder of Zelos Direct Primary Care. She earned her medical degree from Ross University School of Medicine in 2016. Her earlier studies include a BSc in Biochemistry from the University of Benin, Nigeria, and a Nuclear Medicine Technology Diploma from Calgary, Alberta. She completed her Family Medicine residency at the University of Illinois College of Medicine at Peoria in 2019. After residency, she practiced outpatient general family medicine in Bartonville, Illinois before founding Zelos DPC. She holds board certifications through the American Board of Obesity Medicine and holds membership in the American Academy of Family Physicians and The Menopause Society.
Dr. Oni focuses on the full spectrum of family medicine, women's health, and obesity medicine. She has a particular passion for PCOS, insulin resistance, perimenopause, and GLP-1 therapies. Faith plays a central role in how she practices. She prays with patients and describes her care as meeting the whole person, body, mind, and spirit. Outside the clinic, she enjoys ethnic films and time with her women's group, and she describes herself as navigating an almost-empty nest. Patients consistently describe her as thorough, warm, and someone who listens carefully and explains things clearly.
Education & Training
Undergraduate
BSc in Biochemistry, University of Benin, Nigeria
Medical School
Ross University School of Medicine (2016)
Residency
Family Medicine Residency, University of Illinois College of Medicine at Peoria (2019)
Additional Training
Nuclear Medicine Technology Diploma, Calgary, Alberta
Certifications
Conditions Treated
Who is Dr. Oni right for?
Dr. Oni is a strong fit for women navigating hormonal health, including PCOS, insulin resistance, and perimenopause. Families seeking a physician who integrates faith and science into primary care will feel at home in her practice. She treats patients of all ages, making her a good match for households that want one doctor for the whole family. Patients managing weight concerns or metabolic conditions also benefit from her certification in Obesity Medicine and her expertise with GLP-1 therapies.
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Frequently Asked Questions
Dr. Oni specializes in family medicine, women's health, and obesity medicine. She has a particular focus on PCOS, insulin resistance, perimenopause, and GLP-1 therapies. She also manages chronic diseases, preventive care, and pediatric health, serving patients across all life stages.
Yes, Dr. Oni holds double board certification in both Family Medicine and Obesity Medicine through the American Board of Obesity Medicine. She also maintains membership in the American Academy of Family Physicians and The Menopause Society.
Dr. Oni earned her medical degree from Ross University School of Medicine in 2016. She completed her Family Medicine residency at the University of Illinois College of Medicine at Peoria in 2019. Before founding Zelos DPC, she practiced outpatient family medicine in Bartonville, Illinois.
Yes, Dr. Oni practices full-spectrum family medicine, which includes pediatric care. She sees patients across all age groups, making her a practical choice for families who want a single physician for both children and adults.
Dr. Oni integrates faith and science into her clinical approach. She meets each patient as a whole person, attending to body, mind, and spirit. Patients describe her as thorough, warm, and someone who listens carefully and explains things clearly.
Yes, Dr. Oni runs a Virtual Obesity Medicine Clinic for patients in Texas and Illinois. She also provides telemedicine for members of Zelos DPC, allowing patients to connect with her remotely for appropriate concerns.
Dr. Oni treats a wide range of women's health concerns, including PCOS, insulin resistance, and perimenopause. She also provides Pap smears and preventive screenings. Her membership in The Menopause Society reflects her clinical investment in hormonal health across a woman's lifespan.
Dr. Oni completed her residency in 2019 and practiced outpatient family medicine in Bartonville, Illinois before founding Zelos DPC. She brings clinical experience from both traditional outpatient settings and her own independent practice in McKinney, Texas.
Doctor profile last updated March 21, 2026