Board Certifications

  • Critical Care Medicine
  • Pulmonology
  • Sleep Medicine

Areas of Expertise

  • Medical Director of the Pulmonologists, PC Sleep Lab
  • Sleep Medicine



Medical University of South Carolina
Pulmonary, Critical Care Medicine, and Sleep Medicine
Charleston, SC

Internship and Residency

John Hopkins Hospital
Internal Medicine
Baltimore, MD
1994 and 1996

Medical School

Johns Hopkins School of Medicine
Doctor of Medicine
Baltimore, MD

Undergraduate School

Duke University
Bachelor of Science
Durham, NC

Hospitals Affiliated With

Holy Cross Germantown Hospital
Shady Grove Adventist
Suburban Hospital

Professional Associations

American Academy of Sleep Medicine

American College of Chest Physicians


“The association of upper airway resistance with periodic limb movements.” Sleep Medicine (2001): Exar, E. N., Collop, N. A.

“The upper airway resistance syndrome.” CHEST Journal (1999): Exar, E. N., Collop, N. A.


Elliott N. Exar, MD is passionate about Pulmonology and working closely with his patients across the Gaithersburg area to help them achieve their optimal health. Dr. Exar went to the Johns Hopkins School of Medicine in Baltimore, MD, and completed his post-doctoral residency training at the John Hopkins Hospital in Baltimore, MD. Additionally, Dr. Exar specializes in Sleep Medicine and provides comprehensive consultative and longitudinal care for patients with sleep disorders.