Current Fellows

Class of 2025

Sarthak Garg, MD

Sarthak Garg was born in India, and after a brief stint in Brazil, grew up in Little Rock, Arkansas. After obtaining his undergraduate and medical degrees at the University of Missouri-Kansas City, he completed family medicine residency at the University of Arizona College of Medicine Phoenix where he further honed his interests in integrative medicine and underserved care while developing his passion for substance use disorders. In his free time, Sarthak enjoys music, cooking, films, traveling, and spending quality time with friends.

Tianzhu (Kimi) Ge, MD

Dr. Ge is a recent graduate from the University of Arizona COM-Tucson Psychiatry Residency Program, where she was a Chief Resident. She attended University of Washington for her undergraduate program and graduated from Chicago Medical School for her MD. Her professional interests include addiction psychiatry, forensic psychiatry as well as emergency psychiatry.

Daniel Murphy, MD

DJ grew up in Phoenix, Arizona. He decided to pursue medicine after experiences as a volunteer Spanish interpreter at a sliding-scale fee clinic in Southern Phoenix while attending college. After finishing medical school at Loyola University in Chicago, DJ returned to Arizona where he finished his residency training in family medicine at the UofA. DJ’s desire to pursue additional expertise in addiction medicine was ultimately the result of myriad experiences over the course of his training. These experiences demonstrated the painfully persistent harm caused to vulnerable communities by frequent lack of access to necessary medical care in areas where care is most needed. He looks forward to the additional training that the Addiction Medicine Fellowship will provide so that he can better serve patients in his community, and work to close these access gaps - even if in a small way - in his future career as a primary care physician.

Emily Walker, MD

Dr. Walker grew up in the Pacific Northwest and earned her B.S. in biology from Whitworth University before earning her medical degree at Creighton University. She completed  Psychiatry residency at the University of Arizona, where she served as Chief Resident, and currently continues as an Addiction Medicine fellow. She has received multiple awards across her training including the Frank J. Menolascino Outstanding Student in Psychiatry Award from Creighton University in 2020, the Senior Resident Professionalism Award from University of Arizona in 2024, and the American Psychiatric Association Resident Recognition Award in 2024. Dr. Walker's professional interests include dual diagnosis treatment, collaborative care modeling, education, and reproductive substance use and mental health treatment. In her free time, she enjoys nature and developing her own recipes in the kitchen.