Dr. Peter MacArthur is a board-certified and fellowship-trained primary care sports medicine physician at Inova Health System. With more than 10 years of experience, he has a special interest in the prevention and management of musculoskeletal and athletic injuries, and the use of diagnostic ultrasound, therapeutic platelet-rich plasma and ultrasound-guided procedures.

Dr. MacArthur was drawn to sports medicine because of his own interest in sports and active living. His goal is to help patients of all ages return to their desired activity level as quickly and safely as possible. Patients trust Dr. MacArthur’s expertise because he consistently provides high-quality care, leading to positive and lasting health outcomes. He is uncompromising in his dedication to the well-being of his patients, and committed to providing exceptional care and establishing long-lasting relationships.

Dr. MacArthur is a sought-after consultant and currently serves as the chief medical officer for D.C. United. He is also a consulting team physician for the Washington Nationals and the head team physician for the professional ultimate frisbee team, DC Breeze. Previously, Dr. MacArthur served as a team physician for the Washington Commanders for five years.

A native of the Washington, DC, metro area, Dr. MacArthur lives in Arlington, VA. He enjoys running, biking, cooking, recreational sports and spending time with his family.

Awards/Associations/Appointments

• Top Doctors, Washingtonian, 2018, 2020, 2021
• Top Doctor, Northern Virginia Magazine, 2018
• Top Doctor, Arlington Magazine, 2021
• Adjunct Assistant Professor, F. Edward Hebert School of Medicine, Uniformed Services University of the Health Sciences

Blog Posts

Sports Medicine Physicians: Treating Sports Injuries as a Team. June 2019

Cupping at the Olympics: Fishy Fad or a Therapy to Try? August 2016

Born to Swim: Does Michael Phelps’s Body Give Him A Competitive Advantage? August 2016

Podcasts

Late vs. Early Sports Specialization
In this episode of Inova’s “Ask the Doctor,” Sports Medicine Physician Dr. Peter MacArthur tackles the issue of early vs. late sports specialization and if it leads to overall successful performance and careers. 
Listen to this podcast

Use of Supplements in Athletes
In this episode of Inova’s “Ask the Doctor,” Sports Medicine Physician Dr. Peter MacArthur weighs the potential benefits and motivations for using supplements vs. the risks. Listen to this podcast

Sports Nutrition and Hydration
In this episode of Inova’s “Ask the Doctor,” Sports Medicine Physician Dr. Peter MacArthur explains the principles of good nutrition for athletes and how nutritional needs change based on the intensity level of the activity. Listen to this podcast

Research and Publications

Medical Considerations for Excercise in Older Adults. January/March 2016