our concierge model

Our concierge practice enrolls a limited number of patients, many of whom we’ve known for decades. By keeping our panels relatively small, we can provide longer visits, offer same or next day appointments and guarantee access to a physician on a 24/7 basis, through phone and email. We offer in-house lab and other diagnostic testing, with referrals to outside facilities when needed.

We are committed to providing you personalized attention and seamless experience with our team. When you call our office, you will always reach one of our team members, and not be put through a phone tree. Your requests will be handled quickly and efficiently. We will assist you with referrals both within and outside the DC area.

meet our providers

Mitchell Dunn
Mitchell Dunn, MD
General Internist
Rosalyn Stewart
Rosalyn Stewart, MD, MS, MBA
General Internist
Beth Horowitz
Beth Horowitz, MD
General Internist
Gregory Prokopowicz
Gregory Prokopowicz, MD, MPH
General Internist
Catherine Okuliar
Catherine Okuliar, MD
General Internist
Mitchell Dunn, MD
Board Certified General Internist

I value the long-term relationships with patients that are a special part of practicing internal medicine. I am eager to learn more about new research and technology and incorporate the best into the care I provide.

I have been active in the Washington DC medical community for 40 years. My extensive network of professional colleagues allows me to guide my patients to the right specialists in the metro area and beyond if necessary. I am dedicated to my patients and am interested in all that is happening in your lives and your families. I often see multiple family members and have patients who travel from outside the United States to meet with me for regular examinations.

I attended the Duke University School of Medicine and completed my residency at George Washington University. I served as Chief Medical Resident and spent several years as a member of the full time faculty before starting in private practice. I am a Diplomat of the American Board of Internal Medicine and have been listed as a Washingtonian Top Doctor in every medical issue over the past 20 years. My hobbies include personal fitness and working with computers and information technology. I am married to Susan Lacks, MD and we have three wonderful sons and are proud grandparents.

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contact us

If you would like to become a patient in our concierge practice, schedule a meet and greet or request more details regarding our concierge services, please complete this form.

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payment portal

If you are an existing patient and would like to make a payment, please click below to access your secure payment platform