In 1895, Dr. Nathan Mossell established the Frederick Douglass Memorial Hospital, the first black hospital in Philadelphia. In 1895, Dr. Mossell The second private black hospital in the city. Dr. Mossell was also one of the most highly educated and qualified surgeons at the turn of the 20th century. Even at the age of 90, the physician spent his final hours continuing to practice medicine. He may have been stubborn and quite controlling, but he was also a dedicated medical practitioner.