Competition within different healthcare markets that offers ample choice, high quality, and transparency is vital to ensuring accessible and affordable care to employers and consumers. Competition between health insurers is essential to ensuring lower premiums, improving quality of care, and promoting access and choice. We write to raise concerns over the proposed consolidation in Ohio’s health insurance markets – the proposed mergers between Anthem-Cigna and Aetna-Humana. The proposed mergers between these dominant insurers could substantially lessen competition for millions of consumers in Ohio. We write to ask that the Ohio Department of Insurance (“ODI”) utilize all of its powers, including conducting public hearings, to thoroughly evaluate the impact of these mergers.