CareWorks Family of Companies has been acquired by competitor York Risk Services Group Inc., which runs Frank Gates Ohio. Dublin-based CareWorks dominates Ohio’s market among private managed care organizations that oversee workers’ compensation claims. It served 92,000 employers as of December, according to the Ohio Bureau of Workers’ Compensation. Frank Gates, also in Dublin, was eighth largest with 6,150 policies. Both also provide third-party administrator services to self-funded workers’…