Baltimore, MD Dr. Donald S. Hench, Concentra-Inner Harbor 100 South Charles Street, Suite 150, Baltimore, MD 21201 (410) 752-3010 Very easy and fast. We went in, they took her yellow book, we paid the $25 fee and they said "we will call you when it's ready." We got the call 3 days later I picked up the sealed envelope from the office. Helpful and friendly staff. Tom and Xiaoling