You may also be confident that you're selecting the greatest option for your needs if you're aware of the best medical billing firms to work for in your area and those that are close by. Make sure the business has the know-how and tools required to efficiently handle billing and coding procedures before signing a contract. How to Choose a Medical Billing Outsourcing Company. Medical billing outsourcing providers can either work on-site at your practice or remotely from their own location. In addition to investing in training and education, it necessitates the hiring of personnel and the purchase of equipment. As you may already know, medical billing is one of the most complex and time-consuming aspects of running a practice. If a medical practitioner wants to improve their revenue cycle and cut costs, outsourcing medical billing is a good option.