What You Will Do. UM St. Joseph Medical Center. (UM SJMC), a member of. University of Maryland Medical System. (UMMS), is seeking a per diem. Neonatal Nurse Practitioner or Physician Assistant. to join our NICU team in. Towson, Maryland. . Job Summary. The Nurse Practitioner is responsible for providing total, comprehensive care to patients by applying the nursing process in an organized and systematic manner according to institutional policy. Th...