The Doctors of Foxhall Medicine

Foxhall Medicine was designed to be a practice where specialists would gather to provide personalized care for their patients. The doctors who comprise our staff have been professionally trained and have years of experience working with, and healing, patients


Each doctor's approach to their specialty differs, but the common thread that runs throughout Foxhall Medicine is the dedication we give to each patient, along with using our medical knowledge and resources to provide accurate diagnosis.

Dr. YamamotoJoshua S. Yamamoto, M.D., F.A.C.C.

Dr. Joshua Yamamoto provides only cardiology services at Foxhall Medicine (he is not available for primary care services). He graduated from Princeton University in 1988 with a degree in physics and received his medical degree with honors from Dartmouth Medical School. Dr. Yamamoto trained in medicine at the Johns Hopkins Hospital, and received additional training in cardiology at the National Naval Medical Center (Bethesda Naval Hospital) and Georgetown University Hospital. He served proudly in the Navy for eight years.

At the Bethesda Naval Hospital, Dr. Yamamoto served as Director of Cardiac Imaging and as cardiology consultant to the Attending Physician to Congress. He was also the head of cardiology training. In 2005, he was deployed to the war zone of Kuwait to support the cardiac needs of troops throughout Iraq and Afghanistan. Following his return from Kuwait, Dr. Yamamoto worked in the practice of Edward N. Bodurian, M.D., P.A. in Chevy Chase. He later worked with Foxhall Internists, P.C. before starting at Foxhall Medicine, PLLC. He holds clinical privileges with the Johns Hopkins and the Medstar health systems. He works primarily out of Sibley Memorial Hospital.

A native of the District of Columbia, Dr. Yamamoto and his wife are loving parents to six children.

Dr. ThomasKristin E. Thomas, M.D.

Dr. Kristin Thomas graduated with honors from the University of Michigan in 1990 and then completed her medical degree at Michigan in 1994. She finished residency training at Johns Hopkins Hospital in 1997 and then was appointed one of Hopkins first hospitalists in 1997, serving for one year in this faculty position. In 1998 she served a year on faculty at Hopkins as Chief Resident. She completed six months of fellowship training at Hopkins in Rheumatology in 1999 prior to moving to Washington DC where she joined Foxhall Internists, P.C., in December 1999.

Dr. Thomas was a partner with Foxhall Internists, P.C. until starting Foxhall Medicine, PL.L.C. with her husband in 2013. She is a Board Certified Internist.

Dr. Thomas enjoys seeing patients of all ages and has a diverse patient population. She manages both acute and chronic medical problems and particularly appreciates patients with diagnostic dilemmas and complicated medical issues. She is on the clinical staff at Georgetown University Hospital and Sibley Memorial Hospital. She and her husband reside with their family in Maryland.

Dr. LeeDr. Joyce M. Gonin

Dr. Joyce Gonin is a native of South Africa. She completed her training in Internal Medicine and then Nephrology in Boston at Harvard's Brigham and Women's Hospital in 1993. She pursued advanced training in immunology and transplant medicine with the Indiana University School of Medicine, and became a certified Transplant Nephrologist in 1995. She came to the area initially to join the faculty at the Johns Hopkins University School of Medicine, and then joined the Georgetown University. She opened her own private practice and joined Foxhall Medicine in 2014.

As an Internist and specialist in transplant medicine and nephrology, she has expertise in all aspects of medical care, especially the medical care of immunocompromised patients, and those with kidney disease. Additionally, she has a special interest in difficult to manage blood pressure (hypertension) and kidney stones. She works with patients on dialysis, but is considered an expert in protecting kidney health without resorting to dialysis.

She lives with her husband, a mathematician, in Maryland.