Frederick Sport & Spine is the best physical therapy group in Frederick. Myself and 3 other family members have had to use their services. I have gone to 2 other facilities and they don't compare to the level of service given by Mark and his staff. When Mark heard my son was injured playing high school baseball he called my home to inquire as to how he was doing. I have been known to stop in and just say hi and give him a hug! You won't get better service or knowledge as Mark continues his education so he can stay on top of the latest technology. I would highly recommend. B. Pfister