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.
Rosalyn Stewart, MD, MS, MBA
Board Certified General Internist
Accepting New Patients
I cherish the opportunity to learn my patients’ stories, and to be allowed into their lives, something I continue to find amazing and wonderful. I am dedicated to providing exceptional care using my extensive medical training and compassionate approach, and prioritize building trusting relationships and fostering open communication.
I received my MD and MS in Preventative Medicine from the University of Texas Medical Branch in Galveston Texas. I’ve been a professor of clinical medicine at the Johns Hopkins University School of Medicine for more than twenty years and have held joint appointments in the Departments of Medicine and Pediatrics.
I am board certified in Internal Medicine and am a fellow of the American College of Physicians.
I have particular expertise in medical education and have co-authored a widely adopted textbook on physical diagnosis. I specialize in diagnostic dilemmas and complex disease management, and focus on preventive care and behavioral medicine.
My husband, Matthew, is an otolaryngologist and we have four adult children.
Beth Horowitz, MD
Board Certified General Internist
I received my BA from Stanford University. I am a graduate of
the University of California San Francisco medical school and
completed my internal medicine residency at the Mount
Zion/UCSF program. I also have a masters in health and medical
education from UC Berkeley. After moving back to the East
Coast in 1987, I joined the faculty of George Washington
University Medical Center, eventually becoming director of the
medical residency program. While at GW, I developed courses
and gave numerous presentations on issues related to women’s
health.
I opened a private practice in 1996, but have maintained an
academic appointment and have taught first and second year
medical students over the years. I have worked with Peace
Corps volunteers, am a Fellow of the American College of
Physicians and an active member of Physicians for Human
Rights. I enjoy treating patients at all stages of adulthood.
I have a special interest in adolescents and often begin
working with them when they first leave their pediatrician. To
better understand the health problems facing people at the
other end of life, I became board certified in geriatrics in
the early 1990s.
I have been named a Washington magazine Top Doctor and listed
in Best Doctors in America.
I live in Washington DC with my husband, Michael Kazin, who is
a professor of US history at Georgetown University. We have 2
grown children and an unruly dog.
Gregory Prokopowicz, MD, MPH
Board Certified General Internist
As a physician, my role is not just to diagnose and treat,
but to help the patient understand medical concepts and to
successfully navigate the medical system and coordinate their
care with multiple specialists. It has never been more
important to have a trustworthy interpreter of medical
knowledge, and I strive to play that role through teaching and
conversation with my patients.
I received my BS in philosophy and psychology, MPH in
epidemiology, and MD from the University of Michigan. I
completed my residency in internal medicine at Johns Hopkins
and joined the faculty, where I maintained a busy primary care
practice for 25 years, taught generations of medical students
and residents, and directed the Johns Hopkins Hypertension
Center.
I am board certified in Internal Medicine and am a fellow of
the American College of Physicians and the American Society of
Hypertension. I was selected as a Top Doctor by Baltimore
Magazine in 2020 and 2021.
I have particular expertise in the management of
cardiovascular disease, diabetes, and obesity.
My wife, Kimberley, is also a physician, and I have two sons,
Michael and Matthew. My interests include fitness, classical
music, and current affairs.
Catherine Okuliar, MD
Board Certified General Internist
Accepting New Patients
My philosophy of patient care centers on educating patients and
working with them to develop a personalized healthcare plan that
meets their needs and incorporates best practice standards.
I consider it a privilege to get to know my patients well, and
I value the long-term relationships that are at the heart of high
quality primary care. I also enjoy coordinating with colleagues in other
fields and helping patients navigate our complex health care system.
I graduated magna cum laude from Rice University with a BA in Biology and
received my MD from the University of Texas Southwestern. I completed my
Internal Medicine internship at the University of California San Francisco
and my residency training at Georgetown University.
I then joined the faculty at Georgetown where I had an active primary care
practice for 17 years. As an associate professor, I was also engaged in teaching
and research, and I held multiple leadership roles in medical student and resident education.
I am board certified in Internal Medicine and am a Fellow of the American College
of Physicians. I am also a member of the Phi Beta Kappa and Alpha Omega Alpha honor
societies. Over the past decade, I have been frequently acknowledged as a Top Doctor
by Washingtonian Magazine.
I have particular expertise and training in preventative medicine and lifestyle
coaching, as well as in the management of chronic conditions such as diabetes,
thyroid disorders, and heart disease. I have experience caring for adults ranging
from age 18 to 100. My mission is to help patients of any age live healthy, active
lives so they can accomplish their goals.
My husband, Alex, is an attorney and we have two teenage sons and a labradoodle. My hobbies include travel, hiking, and tennis. I speak both English and Spanish.
