Dr. Ogonna Ignatius Onyeje, MD

Dr. Ogonna Onyeje specializes in internal medicine and hospital medicine, bringing 27 years of clinical experience to patient care. He earned his medical degree from the University of Nigeria and completed his residency training at Mount Sinai School of Medicine. His dual expertise allows him to provide comprehensive care both in outpatient settings and during hospital stays.

Dr. Onyeje practices at multiple locations throughout California's Central Valley, including affiliations with Kaiser Permanente medical centers in Manteca, Fresno, and Modesto, along with Saint Agnes Medical Center and Mercy Medical Center. He focuses on managing high blood pressure conditions and provides diagnostic services such as heart rhythm monitoring. Patients consistently rate his care highly, with an average rating of 4.0 stars, reflecting his commitment to quality medical service across Fresno, Manteca, and Merced.