Our Physicians

Our physicians are technically proficient in diagnosing and absolutely compassionate in treating the broad range of rheumatological and musculoskeletal disorders. Each doctor’s extensive individual training, coupled with the collaboration and consultation with their ARA colleagues, contributes to a unique environment that assures patients receive the highest quality and most comprehensive care.

Click on any of the thumbnail images below to view each doctor’s information.


Herbert S.B. Baraf, MD, FACP, MACR Wheaton, MD	Robert L. Rosenberg, MD, FACR, CCD Wheaton, MD	Evan L. Siegel, MD, FACP, FACR Wheaton, MD Rockville MD

Emma Dilorio, MD, FACR Rockville, MD	David G. Borenstein, MD, MACP, MACR Washington, DC	Alan K. Matsumoto, MD, FACP, FACR Wheaton, MD

David P. Wolfe, MD, FACR Chevy Chase, MD	Paul J. Demarco, MD, FACP, FACR, RhMSUS Wheaton, MD Olney, MD	Shari B. Diamond, MD, FACP, FACR Washington, DC

Ashley D. Beall, MD, FACR Rockville, MD Frederick, MD	Angus B. Worthing, MD, FACP, FACR Washington, DC Chevy Chase, MD	Guada Respicio Duque, MD, MS, FACP, FACR, CCD Rockville, MD Frederick, MD

Justin Peng, MD, FACP, FACR, RhMSUS Washington, DC Fairfax, VA	Rachel Kaiser, MD, MPH, FACP, FACR, CCD Chevy Chase, MD	Nicole Saddic Thomas, MD, FACR Wheaton, MD Fairfax, VA

Daniel El-Bogdadi, MD, FACR Rockville, MD Fairfax, VA	Grace Ahn, MD, FACR, RhMSUS Wheaton, MD Olney, MD Fairfax, VA	Jeffrey A. Potter, MD, FACR Wheaton, MD Olney, MD

Grant H. Louie, MD, MHS, FACR Frederick, MD	Adey A. Berhanu, MD, FACR, RhMSUS Chevy Chase, MD Washington, DC	Louisa S. Ziglar MD, FACR Rockville, MD Frederick, MD

Katherine A. Maher, MD Frederick, MD Rockville, MD	Nitasha Kumar, MD, FACR, CCD Wheaton, MD Olney, MD

Central Call Center: 301-942-7600

Our Physicians