H D Isaacs’s research while affiliated with University of Cambridge and other places

... 923 CE), drawing on his own earlier sources, reported that "al-Walīd confined the lepers so that they would not go out among the people, but added that, "He ordered that provisions be provided to them, and this was done." [27,29]. An analysis of the historical evidence strongly suggests that the bimaristan-which has been described as differing from leprosaria or sites supporting the blind and disabled because of its highly medicalized approach and focus on helping patients [30]-only emerged later, in Abbasid times [30,31]. ...

Reference:

Islam, Leprosy, and Disability: How Religion, History, Art, and Storytelling Can Yield New Insights and Acceptance

... This was the period Jews had been so affected by an outside culture as when they lived under Islam in the middle Ages. The opportunities of earning a living in medicine were far greater than any other comparable scientific pursuit (ISAACS H.D. 1990). Geniza contained vast collection of medicaments for several illnesses, since the art of herbalism increased among the Arabs. ...

Reference:

INNOVATIVE CULTURAL INCLUSIVENESS IN MEDICAL TREATMENTS (LEARNING FROM THE PAST)