Dear __________,
After reflecting on my interview today for the medical office manager opening you have available, I am more confident than ever that I am a perfect match for this position. Along with experience and proficiency in back office, medical billing, and accounting, I possess effective communication and managerial skills. I was greatly impressed with your efficient, friendly, and caring office staff. I have a positive, high-energy personality, and have always demonstrated great integrity and loyalty to my employers and co-workers. I look forward to the possibility of working with you and your wonderful staff.
Sincerely yours,
(YOUR NAME HERE)