Trina Keith is a Certified Medical Assistant who has been in the medical field for 17 years. She has worked all aspects of a medical office. She began her career in the back office, and then moved into medical office administration and management. Her passion has always been in medical billing, because she enjoys working with numbers. She has billed for various specialties such as; ophthalmology, retina, urology, dermatology and intraoperative monitoring. Her vast knowledge of how a medical office functions from front to back allows her to be successful in medical billing, because she understands the medical aspect and terminology of the procedures.