Ms. Mary E. Callahan, RN MSM CRNP Clinical Nurse Specialist - Psych/Mental Health Medicare: Not Enrolled in Medicare Practice Location: 340 Montage Mountain Road, Moosic, PA 18510 Phone: 570-346-3686 Fax: 570-346-5301
Clinical Nurse Specialist: A registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses and clinical experience, is expert in a specialty area of nursing practice within one or more of the components of direct patient/client care, consultation, education, research and administration.