Professional doctorates developed in the United States from the 19th century onward. The first professional doctorate offered in the United States was the M.D. at Kings College (now Columbia University) after the medical school's founding in 1767.

When did doctorates become a thing?

The first doctorate degree was granted in Paris in the 12th century. In its earliest years, the primary subject areas for doctorates included theology, law, and medicine. Yale conferred the first doctorate in America in 1861, followed by Harvard soon after.

Which came first doctor or doctorate?

The answer to "Which of Ph. D. or M.D. was first referred to as a doctor?" is that neither was first, as both D.D. and L.L.D. are earlier. It seems that doctor for both PhD and MD came about the same time: late 14c ... slowly besteading the OE word for a physician: leech.