Unless you register your personal physician with your employer before the date of injury, your employer is obligated and has the right to send you to a doctor of their choice. As a general rule, the employer/insurance company has the right to medical control for the first 30 days after notice of injury. After 30 days, you may go to a doctor of your choice, unless the employer has contracted with a Medical Provider Network (MPN). Then, treatment is only allowed with a physician in the MPN.