“I strive to empower patients to live their healthiest self through a combination of education, preventive strategies, evidence-based medicine, and tailored treatment plans. I want patients to be aware of and comfortable with their own healthcare and know that I will help them manage any of their health concerns.”


Board Certification

  • Internal Medicine

Areas of Expertise

  • Diabetes
  • General Internal Medicine
  • Hypertension
  • Preventative Medicine


Internship and Residency

University of Vermont Medical Center
Internal Medicine
Burlington, VT
2013 and 2015

Medical School

University of Maryland School of Medicine
Doctor of Medicine
Baltimore, MD

Undergraduate School

Haverford College
Bachelor of Science in Chemistry
Delaware County, PA

Professional Associations

American College of Physicians (ACP)
2012 – Present

Medical Society of DC
2015 – Present


“Toxoplasma gondii antibody titers and history of suicide attempts in patients with recurrent mood disorders” Journal of Nervous and Mental Disease (2009)

“Association of seropositivity for influenza and coronaviruses with history of mood disorders and suicide attempts” Journal of Affective Disorders (2011)

Personal Interests

Dr. Tim Arling loves to cook with and for his wife. He has a particular interest in baking and Indian cooking, as well as any holiday that centers around food and family. He plays flute for his church’s band and also enjoys playing board games.


Dr. Timothy Arling graduated from Haverford College, attended University of Maryland School of Medicine and completed Primary Care Track Internal Medicine residency at the University of Vermont. He served on the resident practice committee and was nominated twice for the Resident Teaching award. Prior to joining Capitol Medical Group in 2017, he was in a private practice in Washington, DC. He lives with his wife Laura and corgi in North Bethesda and enjoys cooking, fitness, and the Washington Capitals.