Still believed that often the were over medicating and treating symptoms while not the actual disease. (He had this whole preventative medicine philosophy) Around 1874, He began to formulate several principles that included the importance treating the musculoskeletal system to restore function and aid in maintaining health. At the time there were still other schools of thought out there pertaining to medicine, including the Homeopathy (one of their main schools
Drexel Medical School which eventually became allopathic).
Drexel wasn't a medical school previously (at least as it stands today). It has been a combination of many medical schools of the past... Here is Wikipedia's account of Drexel's history:
History
Medical College of Pennsylvania (MCP)
1850 - 1867: Female Medical College of Pennsylvania
1867 - 1970: Woman's Medical College of Pennsylvania
1970 - 1993: Medical College of Pennsylvania
Hahnemann University (HU)
1848 - 1869: Homeopathic College of Pennsylvania
1869 - 1982: Hahnemann Medical College
1982 - 1993: Hahnemann University
Drexel University College of Medicine
1993 - 1998: MCP Hahnemann School of Medicine (merger of MCP and HU)
1998 - 2002: MCP Hahnemann University
2002 - present: Drexel University College of Medicine
It's complicated, but sufficive to say Drexel's precursor, Homeopathic College of Pennsylvania, was only a Homeopathic institution for 21 years out of its 150+ year existence. (source: wikipedia)
or for Drexel's historical account go here:
http://www.drexelmed.edu/About/History/tabid/639/Default.aspx