One boy, Christopher, bitten by a dog, went to a "specialist" at Lebanon, Pennsylvania, for treatment to avert madness, and another, Tom, had an operation performed on his eyes, probably for cataract.
When at home the Farmer personally helped to care for sick slaves.

He had a special building erected near the Mansion House for use as a hospital.

Once he went to Winchester in the Shenandoah region especially to look after slaves ill with smallpox "and found everything in the utmost confusion, disorder, and backwardness.

Got Blankets and every other requisite from Winchester, and settied things on the best footing I could." As he had had smallpox when at Barbadoes, he had no fear of contagion.
Among the entries in his diary are: "Visited my Plantations and found two negroes sick ...

ordered them to be blooded." "Found that lightening had struck my quarters and near 10 Negroes in it, some very bad but by letting blood recovered." "Found the new negro Cupid ill of a pleurisy at Dogue Run Quarter and had him brot home in a cart for better care of him....