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8095 Innovation Park Drive, Fairfax, VA 22031


Peter H. MacArthur, MD

A member of Inova Medical Group
The doctors of Inova Medical Group are Inova’s premier primary care and specialty physicians, offering top-notch medical expertise, full access to Inova facilities, and the convenience of integrated electronic medical records.
Peter MacArthur, MD


Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Sports Medicine, Family Medicine

Years of Experience





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About Peter MacArthur, MD

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

Dr. MacArthur currently serves as a consulting team physician for the Washington Nationals and as head team physician for the semi-pro ultimate frisbee team, the DC Breeze. Previously, Dr. MacArthur served as a team physician for the Washington Commanders for a period of five years and has provided medical care for D.C. United and the Potomac Nationals.

Dr. MacArthur became interested in sports medicine because of his own interest in sports and active living. His goal is to help his patients of all ages return to their desired activity level as quickly and safely as possible.

A native of the Washington, DC, metro area, Dr. MacArthur currently resides in Capitol Hill. In his spare time he enjoys running, biking, participating in recreational sports and spending time with his family. He has completed the Baltimore Marathon and numerous other races.


  • 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


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


Medical Education

University of Maryland School of Medicine 2011


University of Virginia School of Medicine
Training Specialty: Family Medicine
6/1/2011 - 6/1/2014


Virginia Commonwealth University Fairfax Family Practice
Training Specialty: Sports Medicine
7/1/2014 - 6/30/2015

Board Certification

Sports Medicine, Family Medicine

Hospital Affiliation

Patient Reviews

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Inova Provider Referral Services

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This Find a Doctor referral service is sponsored by Inova. It includes Inova employed providers (indicated by “A Member of Inova Medical Group”) and independent practitioners who have obtained the appropriate medical staff privileges at an Inova facility or care site. Independent practitioners are not Inova employees, agents or representatives of Inova and are solely responsible for their provision of medical care to you.

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