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Meet Our Residents

Residents in the Radiation Oncology Residency at Mayo Clinic in Arizona come from around the U.S. and across the world. While all of our trainees have a love of learning and a compassionate approach to patient care, they come from diverse backgrounds, family status, and professional and personal interests.

From the residents

Welcome to Mayo Clinic Radiation Oncology in Phoenix, Arizona! 

In the Department of Radiation Oncology, medical residents learn the fundamental principles to become excellent clinicians while also providing the Mayo Clinic standard of excellent care. Our residency training program provides an engaging and collaborative environment that allows you to reach your full potential. 

Whether you are by the pool, exploring the city, or going on an adventure, Phoenix truly is one of the best places to go for your medical training. The Valley of the Sun will be a great place for you to enjoy great food, history, art, and surrounding desert beauty. 

If you are looking to become a radiation oncologist, Mayo Clinic Arizona provides the best opportunity for you to thrive. Come join us! 

Diego Santos Toesca, M.D.

Diego Santos Toesca, M.D.

PGY-4

Hometown: Umuarama, PR, Brazil
Medical school: University Federal de Mato Grosso do Sul, BR
Research/academic interests: Gastrointestinal cancer, AI, SRS, SBRT
Outside interests: Family time, road biking, and bonsai

Why did you choose to train at Mayo Clinic?

"I chose Mayo Clinic because it combines a great training structure, with a major focus on trainee education and well-being, as well as for being a renowned institution for providing exceptional patient care and strong research."

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William Sperduto, M.D.

William Sperduto, M.D.

PGY-3

Hometown: Minnetonka Beach, MN
Undergraduate school: Duke University
Medical school: Duke University
Research/academic interests: CNS, GI, H&N, pediatrics, proton therapy, and graphic medicine
Outside interests: Family time, traveling, hiking, biking, tennis, golf, and pick-up basketball

What do you enjoy most about this program?

"I am grateful to be part of the radiation oncology team at Mayo Clinic in Phoenix, Arizona. The support we have for research and professional development enables us to become our best selves. Working alongside department staff who are approachable, accountable, and share a commitment to our guiding values makes for a fun learning environment. I enjoy what I do, and I am happy here. Not to mention, we are surrounded by hiking trails and awesome wilderness to explore!"

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Rich Kunath, M.D.

Rich Kunath, M.D.

PGY-2

Hometown: Minneapolis, MN
Undergraduate school: University of Minnesota
Medical school: University of Minnesota
Research/academic interests: Medical education, brachytherapy, and radiotherapy in low-resource settings
Outside interests: Travel, geography, wilderness backpacking, amateur radio, and current events to name a few

What do you enjoy most about this program?

"This small, collegial program blends outstanding didactics, cutting edge research, and progressive patient care with the renowned values and resources of Mayo Clinic. Our thoughtfully tailored transitional year allows residents to begin training as radiation oncologists from day one. Faculty, staff, and co-residents are brilliant, approachable, and care deeply about our patients and each other. There's nowhere else I'd rather grow."

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Sean McCauley, M.D.

Sean McCauley, M.D.

PGY-1

Hometown: Lake Forest, CA
Undergraduate school: University of California- Los Angeles
Medical school: University of Arizona College of Medicine Phoenix
Research/academic interests: Professional Wellness, LGBQ+ Health, Patient Outcomes, GI/GU, Medical Education
Outside interests: Weightlifting, Spartan races, Travel Photography, Escape Rooms

Why did you choose to train at Mayo Clinic?

"What I love about this program is the commitment to training the next generation of radiation oncologists as well as the passion for patient care. This is supported by a department that thrives on collaboration and teamwork. Additionally, there are countless opportunities for research in any area of interest. I am so fortunate to be a part of this team and I look forward to my development as a physician here."

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