Find out why patients are switching to us.


We believe healthcare should always put the patient first.


If you are facing a serious illness or simply seeking ways to live a longer, healthier life, today's complex healthcare environment can be confusing and exhausting. Executive MD helps you focus on prevention, early detection and a long-term optimal health strategy, as well as helping with immediate needs.

Executive MD works proactively - integrating traditional medicine and complementary practices to address the whole health of each individual patient. Our team supports you to address health issues, schedules physician appointments for you, and most importantly, supports the follow-up on the doctor's recommendations to maintain and enhance your health.


Dr. John P. Mamana is one of those rare physicians whose vast experience in the practice and teaching of medicine has been singled out to be in a class of its own. A prominent Board Certified Internist and a pioneer in primary care, he was given a Presidential Citation for his work in the Public Health Service as a Full Surgeon for his leadership in establishing the National Health Service Corps to care for communities under-served by physicians and care givers.

Dr. Mamana was selected multiple years as one of the top Physicians/Internists in the DC area by Washingtonian Magazine and his medical peers. He lectures internationally on Preventative Medicine and the early diagnosis and treatment of disease.

Harvard University

Medical School:
Boston University School of Medicine

Residency in Internal Medicine:
University of Pennsylvania

  • Chairman, Internal Medicine, Inova Fairfax Hospital 1977-1997
  • President, Fairfax Hospital Medical Staff 1990-1992
  • Clinical Associate Professor Medicine, Georgetown Univ School of Medicine 1987-2007
  • Chairman, Council of Physicians, American Hospital Association 1979-1982
  • Member of the Board of Trustees & Technology Council of AHA 1979-1982
  • Member of the Board of MAMSI (NYSE)
  • Member of the Board of American Health Properties (NYSE)


Dr. Nomi Shaool, M.D. is an highly experienced physician dedicated to the care of her patients. She is determined to maintain the highest standards of medical care that patients expect from their physicians.

Dr. Shaool has over 25 years of experience as an urgent care and as a primary medical doctor. She practiced both in private and Military sector as a Medical Officer stationed with the US Marines. She was responsible for the primary care and any emergencies that occurred during Marine training. Dr. Shaool worked in urgent care for 18 years acting as a Medical Director , she then joined Dr. Mamana at Executive MD. She is expert at primary care, nutrition, urgent care and preventative medicine. Dr. Shaool is committed to her patient’s well being, treating the whole person- body, mind, spirit and emotions.

As a team, both Dr. Mamana and Dr. Shaool are fully dedicated to our patients and their well being. We practice both internal and preventative medicine. At Executive MD we value your trust and are committed to providing you the best possible health care experience.

Dr. Shaool has a Bachelor’s in chemistry from University of South Florida, earned her MD from Meharry medical school , completed her internship at Union Memorial hospital in Surgery and a residency at Thomas Jefferson Hospital in Emergency Medicine.

Dr. Shaool loves spending time with her family, running 5K-10K races, fantasy football,attending the Opera and dining in Mediterranean restaurants.

University of South Florida

Medical School:
Meharry Medical College

Residency in Emergency Medicine:
Thomas Jefferson Hospital

Dr. John Mamana is brilliant as a diagnostic physician and he makes certain that I stay healthy using innovative wellness and prevention. I have never been as well cared for as I have been by Dr. John over the past 22 years.

Larry Doll,
CEO & Chairman
Larry Doll Enterprises
United Bank

Contact Executive MD

1355 Beverly Road, Suite 220
McLean, Virginia 22101