JAMA Network: Latest Articles in History of Medicine
Requires membership or per article fee. Online issues go back to Vol 1, No. 1 July 14, 1883 with the minutes of the AMA meeting in Cleveland.

Can filter search by Journal (JAMA Neurology JAMA Dermatology JAMA Surgery JAMA JAMA Ophthalmology JAMA Pediatrics JAMA Internal Medicine JAMA Facial Plastic Surgery JAMA Otolaryngology–Head & Neck Surgery JAMA Cardiology JAMA Psychiatry JAMA Oncology); Article Type (Review Opinion Humanities Research News Letter Case Report); or Keyword.

The New England Journal: Browse Medical History
Requires membership or per article fee. The online archive goes back to 1812. It was listed in the first catalogue of the Library of the Surgeon General, in 1840, as simply "New England".