2025-2026 Resident Roster
4th Years
William (Preston) Carroway, MD
Hometown: Piedmont, OK
Undergraduate: University of Oklahoma
Medical School: Oklahoma University College of Medicine
Favorite thing about UCSF-East Bay: My co-residents and the operative experience.
About Me: I love going on walks with my dog and fiancé, and finding new places to eat at. I build furniture for my apartment - TV stands, coffee tables, nightstands, headboards. I am brand new to the West Coast, and loving it so far!
Brandon Cowan, MD
Hometown: Santa Barbara, CA
Undergraduate: University of California, Berkeley
Medical School: Oakland University William Beaumont
Favorite thing about UCSF-East Bay: I was attracted tot he culture of compassionate and clearly brilliant residents and attendings, with a county hospital experience that rewards our hard work with interesting cases that residents can take a lot of ownership in. I'm constantly inspired by the people around me to learn more and to be a better person and physician.
About Me: I love to ride bikes, run around Lake Merritt, and find cool places to drink beers.
Nikathan (Niko) Kumar, MD
Hometown: Madison, CT
Undergraduate: Vanderbilt University
Medical School: New York Medical College
Favorite thing about UCSF-East Bay: The operative experience and the autonomy!
About Me: My favorite things to do are playing soccer, running, biking, and playing piano.
Sahil Patel, MD
Hometown: Denver, CO
Undergraduate: Case Western Reserve University
Medical School: Medical University of South Carolina
Favorite thing about UCSF-East Bay: The resident culture, autonomy given to the residents, and exposure to working at multiple hospital systems.
About Me: I enjoy camping, going to concerts, trying out new beers, and watching/playing soccer (huge Tottenham fan).
Carissa (Cey Cey) Villanueva, MD
Hometown: Long Beach, CA
Undergraduate: UCLA
Medical School: USC
Favorite thing about UCSF-East Bay:
About Me: My favorite things to do outside of the hospital are Olympic weightlifting 🏋🏻♀️, Muay Thai 🥊, Basketball 🏀, Eating donuts 🍩