Best Places to Work in Healthcare - 2018 We work hard and play hard. Here, a group of employees competed in the Washington, D.C., Spartan Race. All <Prev Next> Rank 12 - Supplier Protenus Supplier, Baltimore , MD Tweet Share Share Email More Supplier rank: 12Years on List: 1Number of employees: 39Voluntary employee turnover: 15%Employee's love: Unlimited PTO; ability to set up your own career path; paddle boarding and bowling events