Reliant Medical Group (Worcester, Mass.). Reliant Medical Group, a multispecialty group practice, has more than 20 sites and employs more than 2,400 providers and staff. Alongside standard health benefits, Reliant offers fitness reimbursement, massage therapy discounts, an employee assistance program and adoption benefits. Another perk of working at the company includes a concierge program called "Resources on Call," which provides employees with customized referrals and recommendations for a range of services, including child care, handyman and financial planning.