Dr. John Constantine Koumas, DO

Dr. John Koumas specializes in family medicine, providing comprehensive care for patients of all ages. They earned their medical degree from Western University of Health Sciences and completed residency training at Long Beach Memorial Medical Center. With 39 years of experience in practice, Dr. Koumas brings extensive knowledge to patient care. They are fluent in both English and Spanish.

Dr. Koumas practices at locations in Lake Forest and West Covina, California, and maintains hospital affiliations with UCI Health Fountain Valley. They focus on managing high blood pressure conditions, including hypertensive emergencies and pediatric hypertension cases. Dr. Koumas also performs dialysis procedures and continuous ambulatory peritoneal dialysis for patients with kidney conditions. Patients have given them an average rating of 4.3 stars for their care.