Dr. Marschall received her Doctor of Dental Medicine degree from the University of Pennsylvania School of Dental Medicine. After completing a hospital based  General Practice Residency program at Tufts University of Dental Medicine, she returned to the University of Pennsylvania School of Dental Medicine, where she received her Endodontic degree. 

During her endodontic residency, Dr. Marschall was very involved in research and even taught during the Endodontic Microsurgery course. An active member of the American Dental Association and the American Association of Endodontists, she was recognized for her excellent work on the Dental Benefits Committee for the American Association of Endodontists.

Dr. Marschall is also an active member of the Florida Dental Association, South Florida Dental Association and Flordia Association of Endodontists.