This can help you save a lot of money because there are frequently mistakes in medical billing. A medical bill negotiator is a professional who specializes in negotiating medical bills on behalf of individuals and healthcare providers. Negotiators for medical bills are experienced in dealing with lawyers, insurance companies, and healthcare providers.2) Reducing Medical Expenses. Even better, there are a handful of free medical bill negotiation services that do not charge any fees whatsoever and will work with providers to reduce their medical billing costs. By working with a reputable bill negotiator, medical professionals can avoid overpaying for medical services and reduce their medical debt. As healthcare providers, you have a responsibility to ensure your patients receive the best possible care, and medical bill negotiation is an essential way to ensure the affordability of that care.