Meet Our Residents

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Meet our chief residents

Adam Bacon, M.D.

Chief Resident

Hometown: Orinda, California

Undergraduate: University of Oregon

Medical school: University of California, Davis

Professional interest: Cardiology, medical education

Hobbies: BBQ, weightlifting, golf

Taylor Viggiano, M.D.

Chief Resident

Hometown: Phoenix, Arizona

Undergraduate: Brown University

Medical school: Mayo Clinic Alix School of Medicine, Arizona

Professional interest: Gastroenterology, transplant hepatology, medical education, nutrition

Hobbies: Pilates, Wordle, live music, meditation

Winston Wang, M.D.

Chief Resident

Hometown: Palo Alto, California

Undergraduate: Stanford University

Medical school: Mayo Clinic Alix School of Medicine, Phoenix, Arizona

Professional interest: Inpatient medicine, cardiology

Hobbies: Board games, volleyball

"Welcome to the Internal Medicine Residency at Mayo Clinic in Arizona! We are so glad you found your way to our program. As chief residents, we have the best job in the hospital: supporting our residents through their education, growth, and wellness. Watching our residents thrive in their training and in their lives outside the hospital is what makes this role so meaningful to us. If you have any questions about our program or just want to hear what it's really like to train here, please reach out. We would truly love to hear from you."

Warmly,

Adam Bacon, M.D.
Chief Resident
bacon.adam@mayo.edu

Taylor Viggiano, M.D.
Chief Resident
viggiano.taylor@mayo.edu

Winston Wang, M.D.
Chief Resident
wang.winston@mayo.edu

Words from our residents

Our residents come from medical schools across the country and around the world, bringing a rich mix of backgrounds, perspectives, and stories to our program. Hear from a few of them about what drew them here, what they love about training at Mayo, and why Arizona has become home.

Anthony Nguyen, M.D.

“Mayo Clinic in Arizona is a very special place to train. Mayo Clinic provides top-notch training in Internal Medicine - there is a wide variety of very complex pathologies, often requiring complex coordination of care and complex niche sub-specialty care, due to the number of solid organ transplant and immunocompromised patients that we take care of. I think, though, equally as important, I chose Mayo Clinic because of the resident culture. The residents are very supportive of each other, are friends with one another, and everyone is similarly aligned with the mission that "the needs of the patient come first." Everyone puts their best foot forward for their patients, and I am so glad that I am working with colleagues who have such a passion for delivering the best patient care possible.”

Medical school: University of California at Los Angeles

James Kim, M.D.

"Having been at Mayo Clinic in Arizona since medical school, I can honestly say this place is incredible. I've felt an endless amount of support from my co-residents, faculty, and leadership. I've always been encouraged to reach out for anything, whether it is guidance, mentorship, or career advice. As a military veteran, I’ve long valued teamwork, service, and being part of a group that looks out for one another, and I’ve found that same sense of purpose and camaraderie here. More than anything, I believe it’s the people who make this program what it is, and I’m incredibly grateful to have spent both medical school and residency at Mayo Clinic in Arizona and to continue being part of this community."

Medical school: Mayo Clinic Alix School of Medicine

Celine Hoyek, M.D.

"What makes training at Mayo Clinic so special to me is the commitment to its mission: the needs of the patient come first. I’ve been continuously impressed by how welcoming, supportive, and invested the entire care team, from nurses to residents and attendings, is. Everyone I’ve encountered is humble, kind and ready to go the extra mile for our patients and for one another. We are also given the space to learn and grow while maintaining high standards in patient care, with seemingly unlimited access to resources and support. Additionally, no matter your interests, the program leadership makes it possible to pursue them by connecting us with research opportunities, academic tracks, and other avenues for professional development. Overall, training at Mayo Clinic in Arizona has been an absolute dream!”

Medical school: University of Balamand Faculty of Medicine and Medical Sciences

Pierce Claassen, M.D.

“Having the opportunity to train as an internal medicine resident physician at Mayo Clinic has been a true blessing. Since I rotated at the hospital as a visiting sub-intern during my fourth year of medical school, I was fortunate to witness a glimpse of the program's culture prior to residency. This month-long experience had me sold! Mayo Clinic is an incredible institution. The renowned patient care, education, and research is only possible because of the culture of collegiality and mutual respect among the physicians, scientists, and allied healthcare professionals who all work together to meet the needs of their patients. I am so grateful to be a part of the Mayo Clinic family."

Medical school: Washington State University

Albert Chong, M.D., M.P.H.

“Mayo Clinic in Arizona is a place where the phrase ‘I don’t know’ is embraced as an opportunity to learn, teach, and grow. I can say without doubt that the people here are wholly dedicated to the success of both patients and each other. The internal medicine residency here offers a balanced exposure to common and complex pathologies, patients with and without means, and clinical and research opportunities. Our 4+4 block schedule fosters wellness as both a physician and human being.”

Medical school: Keck School of Medicine, University of Southern California

Alex Gonzalez, M.D.

I was drawn to Mayo Clinic in Arizona for a variety of reasons. First of all, the resources here are second to none. The culture of Mayo Clinic is legendary for being extremely welcoming and warm. I love living in Phoenix and being in a community that has everything you could need, from hiking to sports teams (my personal favorite and a must on places where I applied), to everything in between. I felt that the resources, location, and the PEOPLE that the residency program picks are why I was drawn to apply here, and ultimately chose to be here.”

Medical school: Baylor College of Medicine

Aileen Lee, M.D.

“As a medical student, I did an away rotation at Mayo Clinic in Arizona. What sold me was the warm, inclusive culture that reminded me of a community hospital, yet had the resources, medical complexity and expertise of a globally renowned institution. In those four weeks, I thrived because I felt so safe to learn. As a resident, this continues to be true. Even during the busiest of days, my attendings are eager to teach, and everyone - from senior residents to nursing staff - is there to support me.“

Medical school: University of Arizona College of Medicine-Tucson

Samarth Rawal, M.D.

“If I had to choose a single word to sum up Mayo Clinic culture, it would be 'supportive'. Whether it is asking a consultant for clinical advice, a member of the teaching faculty for academic guidance, or any interaction at any level with staff at Mayo, everyone is kind, compassionate, and more than willing to take the time to provide help. Even a couple of months into my residency training, this culture has made me feel so welcome and encouraged to grow as a learner.”

Medical school: Carle Illinois College of Medicine at UIUC

Class of 2027

	Haya Al Any, M.D., M.S. Hometown: Phoenix, Arizona Undergraduate: Arizona State University Medical school: University of Arizona College of Medicine-Phoenix Professional interest: Nephrology Hobbies: Travel, faith, and advocacy for mental health care
	Albert Chong, M.D., M.P.H Hometown: Sunnyvale, California Undergraduate: University of California, Los Angeles Medical school: Keck School of Medicine, University of Southern California Professional interest: Allergy/immunology, mental healthcare, public health Hobbies: Board games, coffee, dining out, live music, tennis, hiking, golf
	Pierce Claassen, M.D. Hometown: Clarkston, Washington Undergraduate: Washington State University Medical school: Washington State University Professional interest: Gastroenterology and hepatology, colorectal cancer prevention, screening, and treatment, rural healthcare access Hobbies: Playing acoustic guitar, country music, agriculture, upland game hunting, long-distance running, cast iron cooking, and spending quality time with my wife
	Sofia De La O Bahr, M.D. Hometown: Saltillo, Mexico Undergraduate: University of Kansas Medical school: University of Kansas School of Medicine Professional interest: Primary care Hobbies: Hiking, outdoors, plants, trying new food/restaurants, traveling, staying active, being a mom
	Luke Dreher, M.D. Hometown: Goodyear, Arizona Undergraduate: University of Arizona Medical school: Boston University School of Medicine Professional interest: Cardiology Hobbies: Hiking, lifting, football, baseball, basketball
	Ryan Gassner, M.D. Hometown: Wausau, Wisconsin Undergraduate: University of Wisconsin, Madison Medical school: Medical College of Wisconsin Professional interest: Hospital internal medicine Hobbies: Anything outdoors, football, basketball, baseball, cooking/grilling, trying new restaurants, acoustic guitar, hunting, fishing, country music
	Alejandro Gonzalez, M.D. Hometown: Laredo, Texas Undergraduate: University of Notre Dame Medical school: Baylor College of Medicine Professional interest: Gastroenterology Hobbies: Sports, country music, food
	Jack Hartnett, M.B., B.Ch. Hometown: Cork, Ireland Medical school: Trinity College Dublin Professional interest: Cardiology Hobbies: Gym, running, hiking
	Aileen Lee, M.D. Hometown: Eugene, Oregon Undergraduate: Georgetown University Medical school: University of Arizona College of Medicine – Tucson Professional interest: Geriatrics, general internal medicine, health disparities, medical education Hobbies: Boba, running, creating 30-second video food reviews
	Samarth Rawal, M.D. Hometown: Chandler, Arizona Undergraduate: Arizona State University Medical school: Carle Illinois College of Medicine at UIUC Professional interest: Clinical artificial intelligence, clinical research, entrepreneurship, clinical informatics Hobbies: Singing Indian classical music, the Beatles, hiking, running
	Leticia Assad Maia Sandoval, M.D. Hometown: Brasilia, Brazil Medical school: Universidade de Brasilia Professional interest: Hematology/Oncology Hobbies: Cooking, hiking, board games, running, and meditation
	Wallace Klein Schwengber, M.D. Hometown: Itapiranga, Brazil Medical school: Universidade Federal do Rio Grande do Sul Professional interest: Clinical research, evidence based medicine, cardiology Hobbies: Sports, bodybuilding, spending time with family and friends
	Julianna Smith, M.D. Hometown: Kingman, Arizona Undergraduate: Arizona State University Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Cardiology, Pulmonology/critical care, health disparities Hobbies: Netflix, coffee, pickleball, volleyball, music
	Hunter VanDolah, M.D. Hometown: Phoenix, Arizona Undergraduate: Creighton University Medical school: Georgetown University Professional interest: Cardiology Hobbies: Hiking, camping, playing with my golden retriever, Cooper
	Kevin Zhou, M.D. Hometown: Los Angeles, California Undergraduate: University of Washington Medical school: Washington State University Professional interest: Infectious disease, street medicine, health equity Hobbies: Board games, video games, badminton, hiking

Class of 2028

	Nick Allen, M.D. Hometown: Oakland, California Undergraduate: University of California, Berkley Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Primary care, disease prevention, public health Hobbies: Sports, board games, movie nights, group dinners
	Farha Deceus, M.D. Hometown: Lehigh Acres, Florida Undergraduate: University of Florida Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Primary care, women’s health Hobbies: Live music/concerts, musicals, trivia, NYT games/crosswords, sci-fi and historical fiction, documentaries
	Marcos Duran, M.D. Hometown: Salt Lake City, Utah Undergraduate: Cornell University Medical school: Northwestern University Feinberg School of Medicine Professional interest: Endocrinology, medical education Hobbies: Music (singing and listening), hiking, movies (sci-fi, superhero), musical theater, board games
	Marta Torres Branco da Cunha Figueiral, M.D. Hometown: Lisbon, Portugal Medical school: Universidade da Beira Interior- Faculdade de Ciencias da Saude Professional interest: Cardiology Hobbies: Running, gymnastics, hiking, going to the beach, traveling
	Celine Hoyek, M.D. Hometown: Beirut, Lebanon Undergraduate: Lebanese American University Medical school: University of Balamand Faculty of Medicine and Medical Sciences Professional interest: Hematology/Oncology, Infectious disease Hobbies: Music (live music, collecting vinyl records), basketball, rock climbing
	Alyssa Ishimoto, M.D. Hometown: Los Angeles, California Undergraduate: University of California, Los Angeles Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Pulmonology/critical care, bioethics, gender disparities, medical education Hobbies: Pickleball, hiking, matcha cafe hopping, camping
	James Kim, M.D. Hometown: Burbank, California Undergraduate: University of Arizona Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Cardiology Hobbies: Gym
	David Martinez Gamboa, M.D. Hometown: Bogota, Colombia Medical school: Universidad Nacional de Colombia Professional interest: Hematology/Oncology Hobbies: Traveling, hiking, exploring
	Manuel Montoya Hernandez, M.D. Hometown: Mexicali, Mexico Undergraduate: CETYS University Medical school: Universidad Autonoma de Baja California Professional interest: Cardiology, artificial intelligence Hobbies: Sports, cooking, coffee, anime, videogames
	Syed Arsalan Ahmed Naqvi, M.D. Hometown: Karachi, Pakistan Medical school: Dow University of Health Sciences Professional interest: Oncology, CardioOnc Hobbies: Ping pong, going to the gym, hiking, exploring local food spots, and unwinding with Netflix
	Anthony Nguyen, M.D. Hometown: Irvine, California Undergraduate: University of California, Irvine Medical school: David Geffen School of Medicine at the University of California, Los Angeles Professional interest: Hospital internal medicine, echocardiography/heart failure/POCUS, medical education Hobbies: Hiking, basketball
	Jordan Shock, M.D. Hometown: Monroe City, Indiana Undergraduate: Indiana University Medical school: George Washington University Professional interest: Palliative care Hobbies: Tabletop games, NCAA football/basketball, NFL
	Nick Schultz, M.D. Hometown: Yucaipa, California Undergraduate: Arizona State University Medical school: University of Arizona College of Medicine – Phoenix Professional interest: Cardiology Hobbies: Outdoors (hiking, camping, fishing), reading, gardening, cooking/baking, and video games
	Geoff Thomas, M.D. Hometown: Irving, Texas Undergraduate: Texas Tech University Medical school: Texas Tech University Health Sciences Center, Lubbock Professional interest: Gastroenterology Hobbies: Weightlifting, pickleball, hiking
	Georgios Tousinas, M.D. Hometown: Thessaloniki, Greece Medical school: Medical University of Sofia Professional interest: Hematology/Oncology, hematologic malignancies, basic research Hobbies: Restaurants, nature, movies, volunteering, karaoke, trivia, books, popular science

Class of 2029

	Alexa Baier, M.D. Hometown: Billings, Montana Undergraduate: University of Colorado Medical school: University of Cincinnati Professional interest: Primary care, preventive medicine, and lifestyle medicine Hobbies: Hiking, backpacking, and running
	Jason Bonner, M.D. Hometown: Sheboygan Falls, Wisconsin Undergraduate: University of Minnesota – Twin Cities Medical school: University of Iowa Carver College of Medicine Professional interest: Hospital medicine, Cardiology, global health, health equity Hobbies: Outdoor adventuring, cat parenting, cooking, gaming, traveling
	Ahmed Magdi Mohamed Elmoursi, M.B., B.Ch., M.P.H. Hometown: Cairo, Egypt Graduate school: Harvard University Medical school: Al-Azhar University Professional interest: Gastroenterology, inflammatory bowel disease, research, medical education, health equity, and global health Hobbies: Traveling, hiking, camping, table tennis and pickleball, soccer, group dinners, documentaries
	Tony Gaidici, M.D. Hometown: Phoenix, Arizona Undergraduate: Vanderbilt University Medical school: University of Arizona College of Medicine - Phoenix Professional interest: Gastroenterology Hobbies: Weightlifting, tennis, drone and travel videography, cooking (meats), EDM and country music
	Matthew Gregory, M.D. Hometown: Avon, Indiana Undergraduate: University of Notre Dame Medical school: Indiana University School of Medicine Professional interest: Hepatology Hobbies: Basketball, hiking, tennis, golf, movies
	Austin Guadarrama, M.D. Hometown: San Antonio, Texas Undergraduate: Texas Tech University Medical school: Texas Tech University Health Sciences Center Lubbock Professional interest: Gastroenterology Hobbies: Hiking, fishing, sports, country music, spending time with my dogs
	Lucia Hong, M.D. Hometown: Temecula, California Undergraduate: University of California, Berkeley Medical school: University of California, Riverside School of Medicine Professional interest: Pulmonary and Critical Care Medicine, POCUS Hobbies: Rock climbing, pickleball, calligraphy, caring for plants
	Fares Jamal, M.D. Hometown: Damascus, Syria Undergraduate: American University of Beirut Medical school: Saba University School of Medicine Professional interest: Gastroenterology Hobbies: Tennis, pickleball, and travel
	Ananya Pappu, M.D. Hometown: Plainsboro, New Jersey Undergraduate: Johns Hopkins University Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Allergy/immunology, nephrology Hobbies: Junk journaling/scrapbooking, tennis, playing with my dog
	Jason Patel, M.D. Hometown: San Diego, California Undergraduate: University of Southern California Medical school: University of Arizona College of Medicine – Phoenix Professional interest: Cardiology Hobbies: Watching sports, playing pickleball, board games
	Cooper Roslund, M.D. Hometown: Bend, Oregon Undergraduate: University of Idaho Medical school: Sidney Kimmel Medical College at Thomas Jefferson University Professional interest: Cardiology, medical education Hobbies: Traveling, hiking, skiing, sports, cooking
	Brendan Saunders, M.B., B.Ch. Hometown: Vancouver, Canada Medical school: University College Dublin Professional interest: Cardiology Hobbies: Rowing, tennis, skiing, music
	Vivian Shing, M.D. Hometown: San Diego, California Undergraduate: Duke University Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Rheumatology, medical education, health equity Hobbies: Hiking, puzzles, hanging out with my two cats, exploring restaurants
	Emma Terwilliger, M.D. Hometown: Valparaiso, Indiana Undergraduate: Purdue University Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Gastroenterology, health equity, medical education Hobbies: Volleyball, travel, baking, weightlifting, paddle boarding, and really anything outdoors
	Nashwan Toma, M.D. Hometown: San Diego, California Undergraduate: University of California San Diego Medical school: University of California San Diego School of Medicine Professional interest: Cardiology, medical education, health disparities Hobbies: Playing soccer and tennis, strength training, cooking and spending time with family and friends
	Emma Willcocks, M.D., M.P.H. Hometown: Glencoe, Illinois Undergraduate: Brown University Graduate school: Harvard T.H. Chan School of Public Health Medical school: Mayo Clinic Alix School of Medicine – Arizona Professional interest: Women's health, environmental health Hobbies: Hiking, pickleball, GeoGuessr, learning line dances, watching Formula 1, shopping