Ohio’s ACA Marketplace only includes HMO plans, so the biggest differences between insurers are price, plan quality, customer experience and county availability. SummaCare is the best health insurance company in Ohio in our analysis, with the lowest average Silver premium at $546 per month for a 40-year-old and a 4-star CMS Quality Rating System (QRS) score. Anthem costs $89 more per month at $635 but has the lowest claims denial rate at 8.3% and is available statewide. Ambetter is the second-cheapest Ohio health insurance provider at $602 per month on average and serves 72 of Ohio’s 88 counties, but its 3-star QRS rating trails SummaCare, MedMutual and Paramount.
Higher premiums don't always mean weaker value. Paramount has the highest average Silver premium among the five top-rated insurers at $727 per month, $181 more than SummaCare, but its 14.2% denial rate is the second lowest in our analysis. Availability also varies by county, though nearly every Ohio county has at least four Marketplace insurers for 2026.













