Dr. Greenwalt is a Cardiovascular and Pulmonary Clinical Specialist, and was the first physical therapist in TN to have this certification.  She is also a Geriatric Clinical Specialist and is a Certified Clinical Instructor through the APTA. She is an active APTA member and is a member of the Board of Directors for the Cardiovascular and Pulmonary Section of the APTA. Her interest areas in both patient care and research are geriatrics and cardiopulmonary comorbidities in the geriatric population.

At Belmont University, Dr. Greenwalt’s teaching responsibilities include: Cardiovascular and Pulmonary Physical Therapy Lecture and Lab, Lifespan Development, Clinical Pathophysiology, Pharmacology, and Clinical Experience I and II. She is an advisor for the IPE Faculty Collaborative.