Cleveland Clinic. The Cleveland Clinic team is made up of 51,960 employees across 10 regional health centers, making Cleveland Clinic the largest private employer in Northeast Ohio. The system offers employees a variety of benefits, including learning management systems for clinical and nonclinical applications, which provide employees with internet and intranet access to online courses covering a variety of topics; several retirement and pension plan offerings; discounts on selective healthcare services; and a host of employee wellness programs.