Mason, Sherell, MD800-777-790110 Hopkins Plz, Baltimore, MD 21201More Business InfoHealth care leader whose mission is to keep you healthy. Under-one-roof convenience, 24-hour advice nurse, and online access to manage your health anytime.HoursDo you know the hours for this business?Other Linkhttp://kp.org/doctor/sherellmasonCategoryPhysicians & Surgeons, Family Medicine & General Practice Suggest an Edit