Chief Residents Announced for 2021-2022


The new chief residents for 2021-2022 have just been announced: Jessica Buesing, MD, Zach Gray, MD, Achyut Patil, MD, and Gabriela Spencer-Bonilla, MD.  The increase of chief residents from three to four is a reflection of the residency program itself, which has grown significantly over the last decade, and of the excellence of the candidates.

As Ron Witteles, MD, associate professor of cardiovascular medicine and Department Chair Bob Harrington, MD,  asserted, “The Chief Residents play a vital role for the residency program and for the Department, and we could not be more excited to have the opportunity to work with such an incredibly talented group.”

Meet the Chief Residents:


Jessica Buesing, MD

Jessica earned a BA in Psychology/Music from Williams College, and an M.D. from Columbia University, where she was inducted into AOA. Jessica has been a leader at the Department and GME level for Women in Medicine, and she plans a career in Hospital Medicine & medical education.


Zach Gray, MD

Zach earned a BS in Biological Sciences/Neuroscience from University of Rochester, and an MD from New York Medical College, where he was inducted into AOA as a junior.  Before medical school he worked for 3 years as a clinical research assistant, and at Stanford he has continued research working with Vivek Bhalla.  He plans a career in medical education, potentially pursuing Cardiology, Hospital Medicine, or Nephrology.


Achyut Patil, MD

 Achyut earned a BS in Molecular, Cellular, and Developmental Biology from Yale, graduating summa cum laude, and an MD from Harvard Medical School.  He has worked in medical education/curriculum development dating back to his time at Harvard, and has continued such work at Stanford. He plans a career in medical education and Hospital Medicine.

Gabriela Spencer-Bonilla, MD

Gaby earned a BA in Human Biology from Stanford, an M.Sc. in Clinical and Translational Science from Mayo Clinic, and an MD from University of Puerto Rico, where she was inducted into the Arnold P. Gold Humanism Honor Society.  She has been an impressively productive researcher dating back to her time as an undergraduate at Stanford, with a current research focus on cardiovascular disease health disparities under the mentorship of Fatima Rodriguez and other DOM faculty.