In addition to his Bloomsbury practice, Sloane was appointed as a physician of Christ's Hospital from 1694 to 1730. Hospitals at this time were only for the care of the poor and Sloane donated his annual hospital salary back to Christ's Hospital. Sloane also supported the Royal College of Physician's dispensary, which aimed to provide inexpensive medicines and he ran a free surgery every morning. He was a member of the board of the Foundling Hospital and made significant donations to other hospitals.