 Parker was elected president of the Medical Society of the State of New York in 1862; and held a commission in the corps of volunteer surgeons provided by the state under Governors Edwin D. Morgan and Horatio Seymour; and was also one of the medical board of Vassar Brothers Medical Center in Poughkeepsie.He died in Poughkeepsie in 1896.Parker was memorialized as "a physician and a surgeon of signal competency and skill" and "a man of extremely fine fiber, of unusual cultivation, and of high scholarly attainments".