Cornerstone Credentialing and Office Solutions, LLC is a trusted ally who makes sure that the clients' needs are paramount. We believe that our clients' needs are simple: to run a successful business. CCOS recognizes that healthcare providers need to be privileged to work in the hospital and receive reimbursement for the services they provide; similarly, business owners need to keep their focus on growing their business and not worrying about keeping up with all the smaller administrative tasks.