About Us

Capitol Medical Group (CMG) Adult Medicine is a unique offshoot of CMG Pediatrics. CMG has been a pillar of childhood and young adult care in the D.C. area since 1987. Over the years, the parents of our pediatric patients have increasingly expressed difficulty about finding an adult medicine practice that accepts insurance and offers the same commitment to quality care we offer at CMG Pediatrics. Lacking a great place to send them, we decided to create one. Welcome to CMG Adult Medicine!

CMG Adult Medicine is located in its own brand-new space down the hall from CMG Pediatrics. Dr. Timothy Arling, board-certified in internal medicine, and Dr. Martine Jasmin, board-certified in internal medicine, lead the practice. Both are knowledgeable, personable, sincere, and truly dedicated to caring for their patients in a thorough and thoughtful manner. They are also firm believers in using evidence-based medicine to help their patients achieve and maintain wellness and live the life they desire. They continue CMG’s commitment to providing high-quality healthcare in a compassionate partnership with our patients—a connection enhanced by their deep roots in our local community.

It is our hope and expectation that CMG Adult Medicine will provide for our adult community the same assurance, understanding, reliability, and accessibility CMG has offered the pediatric community over the last 30 years.


About Privia Health

We are proudly part of Privia Health. Privia equips leading primary and specialty care physicians with cutting-edge resources to help us deliver outstanding, personalized patient care. That’s why Privia’s patient satisfaction scores are 2x higher than national averages. Visit their website to learn how Privia helps you take control of your care.

Healthcare, Handled

You have enough on your plate. We make it easy to message your doctor, connect to on-demand virtual care, receive appointment reminders, refill prescriptions, and get care on the go. If you see more than one doctor in our network, your entire care team has access to your medical chart so we can all work together for your health. Use the myPrivia app or patient portal to:

  • Book appointments, renew prescriptions, and access your electronic health record
  • Send and receive secure messages with your care team

Healthy for the Long Haul

You’re more than a set of symptoms. Privia champions lifelong health and wellness, inside and outside the doctor’s office. From pediatrics to adult needs, preventive programs to complex care, doctor’s visits to self-care at home – we’re here to support you on every step in your journey. Count on Privia for:

  • Collaborative, team-based medical group with leading local providers
  • Same- or next-day appointments with 24/7 telehealth for immediate care

Our Doctors Do More

You can enjoy personalized care without pricey membership fees. Privia doctors take the time to listen to your concerns, from wellness programs to chronic care management. Patients rate our providers 4.9 out of 5 for efforts to include them in decisions about their care, so you can be confident your doctor will help you understand the guidance you get, in-office or virtually. With Privia, you can expect:

  • Unhurried, comprehensive visits to develop the right care plan for you
  • Nationally recognized top physicians and healthcare professionals