Current General Surgery Residents

Chief Residents - General Surgery

Winsor Peng Chen, MD

Eduardo Antonio Espinoza, MD

Hometown: Lima, Peru
Medical School: Universidad Peruana Cayetano Heredia 
Hobbies:  Hiking, collect coins and stamps, watching thriller movies or series 
Interests: Vascular surgery, limb salvage, perforated ulcer disease
Why University of Arizona? Diversity, comfortable environment to work, rural rotations with amazing opportunities to improve surgical skills in different settings. 

Ruel Reyes, MD

Hometown: Mililani, Hawaii
Medical School: University of Hawaii John A. Burns School of Medicine
Hobbies: Cooking
Clinical/Research Interests: Quality improvements, outcomes, medical/surgical education
Why University of Arizona? Sense of community and willingness and desire to help each other. Variety of training sites. 

Samuel Roth Skovgaard, MD

Hometown: Colorado Springs, CO
Medical School: University of Colorado School of Medicine
Hobbies:  Rock Climbing, Chicken Wings, Mind-Bending Movies, Camping
Interests: General Surgery, Rural Surgery, Plastic Surgery
Why University of Arizona? Happy, non-burned-out residents, good access to the outdoors (Mt. Lemmon!)

Jason Alan Spiker, MD

Jack Stupinski, MD

Hometown: North Kingstown, RI
Medical School: Weill Cornell Medical College
Hobbies:  Baking, cooking
Interests: Acute care surgery, trauma, teaching
Why University of Arizona? The ability to cross-train in multiple practice settings with different patient populations. 

Bo Zhang, MD

Hometown: Chapel Hill, NC
Medical School: University of South Florida
Hobbies:  Netflix, video games, playing with my cats
Interests: Education improvement
Why University of Arizona? I really liked what I saw during my interviews - the residents were personable and seemed to get along with each other really well. I liked the aspects of rural and international surgery. Even though we are an academic center we work at community, VA, and private practice locations also to get a wide variety of experience and patient populations. The graduating residents had excellent match results. 

Current Residents - General Surgery


Michelle E Chang, MD

Hometown: Edison, NJ
Medical School: University of Alabama at Birmingham
Hobbies: Playing tennis, swimming
Interests: Surgical Education
Why University of Arizona? The chair of the surgery department where I went to medical school knows Dr. Riall and recommended I look into the program here since she was starting an innovative resident wellness/leadership program. Among the residency programs I applied to, this program also seemed to be the most diverse in terms of its composite of residents and attendings.

Jacqueline Dauch, MD

Hometown: Bloomfield Hills, Michigan
Medical School: Western Michigan University Homer Stryker MD School of Medicine
Hobbies:  Soccer, Travel, Hanging by the pool, Drawing, Family
Interests: Transplant Surgery, Hepatopancreaticobiliary Surgery, General Surgery, Trauma Surgery, Diabetic Neuropathy
Why University of Arizona? UArizona provides an environment where the residents have fun outside of the hospital just as much as in the hospital. I came here for the camaraderie amongst the residents, and the approachability of the attendings. That, and of course, its pretty nice being guaranteed sunshine on my days off. 

Gavin Fiddler, MD, MPH

Hometown: Lindsay, Ontario, Canada
Medical School: University of Miami Miller School of Medicine
Hobbies:  I appreciate the outdoor activities, including:  hiking, biking, and fishing. 
Interests: None
Why University of Arizona? When applying, I was looking for a program that was able to train general surgeons at the end of five years, but also offered an academic background to support fellowship training.
As a general surgery resident, you have one day off a week. Would you rather be in some massive city on your day off, or hiking the mountains in your backyard?

Suzanne Klaus, MD, PhD

Hometown: Des Moines, IA
Medical School: University of California - Irvine
Hobbies: Bicycling, baking, and lizard / ground squirrel watching
Interests: Intestinal immunology
Why University of Arizona? The resident camaraderie, the professional development focus, and the range of clinical experiences 

Charles Lawrence, MD

Hometown: Las Vegas, Nevada
Medical School: University of Nevada School of Medicine
Hobbies: Dog Training, Biking, Hiking, Archery, Cooking, Board Games
Clinical/Research Interests: Congenital Cardiac Surgery, Extracorporeal Life Support
Why University of Arizona? I was born in Phoenix and have always lived in the desert so the University of Arizona is very close to home. I love watching beautiful desert sunsets and enjoying warm summer evenings outside with good food, drinks, and company!

Nina Pollack, MD

Sarah Sohail, MD

Hometown: Pleasanton, CA
Medical School: Boonshoft School of Medicine at Wright State University
Hobbies:  Cooking, rescuing pets and plants, and traveling 
Interests: Global surgery, diversity and inclusion in medicine
Why University of Arizona? Genuine, positive relationships amongst the residents, approachable faculty, and global and rural rotations.. also the tacos.

Nathan Noboru Tanoue, MD

Hometown: Honolulu, HI
Medical School: University of Arizona, Tucson
Hobbies:  Beekeeping, Gardening, Hiking, Woodworking
Interests: Microbiome, lymphatics, pain
Why University of Arizona? Quality of residents

Tommy Manh Tran, MD

Hometown: Houston, TX
Medical School: Baylor College of Medicine
Hobbies: Social dancing, hiking, eating, sleeping
Interests: Quality improvement, Laparoscopic/Robotics, Education
Why University of Arizona? There are many reasons I ranked UASurgery highly, but the main selling points for me were: 1) University affiliation, 2) Trauma 1 Center, and 3) Varied training environments that help build a foundation for either general surgery or subspecialization.

Meredith Whittaker, MD


Maya El Ghouayel, MD

Hometown: New York, NY
Medical School: University of Rochester 
Hobbies:  Dancing, eating, scuba diving
Interests: Global surgery
Why University of Arizona? Patient demographic, rotations in community hospitals and South Africa, ability to work as general surgeon straight out of residency, down-to-earth culture.

Dillon Gasper, MD

Hometown: Ellensburg, WA
Medical School: University of Washington
Hobbies: Running along The Loop, cooking, and hiking
Interests: Surgical simulation and education
Why University of Arizona? Respected program with a focus on resident training with broad range of exposure in different settings (academic, private, VA, and rural)

Mohammad Hamidi, MD

Hometown: Jordan, Amman
Medical School: Jordan University of Science and Technology
Hobbies:  Virtual Aviation, Swimming, Hiking 
Interests: Resuscitation, Coagulopathy and Thromoboprophylaxis.,Cardiothoracic Surgery, Surgical Oncology, Abdominal Transplant 

Why University of Arizona? Multiple reasons;
- Very diverse and friendly program.
- Faculty is very approachable at any time.
- Tucson is an amazing city, many outdoor activities available.
- Wide hands on operative experience with ample amount of autonomy.
- Residents have the opportunity to experience surgery in all possible settings; private practice, academic center, rural surgery, international rotation at South Africa, Cape Town, Veterans Affairs and much more. 

Timothy Harris, MD

Hometown: Portland, OR
Medical School: Dartmouth
Hobbies: running, cooking
Interests: immunology of trauma
Why University of Arizona? An incredibly supportive learning environment. The attending surgeons and chief are motivated to teach and to mentor. They explicitly ask about your learning goals every rotation.

Kirstie Jarrett, MD

Alex Judd, MD

Hometown: Detroit, MI
Medical School: University of Utah School of Medicine
Hobbies:  I'm obsessed with books. I enjoy leisurely reading the paper with a cup of coffee. I love playing soccer, watching English Premier League, riding my Peloton, and spending time with family (especially my niece and nephews). I am also an avid fan of the symphony and Broadway shows. 
Interests: Surgical Oncology
Why University of Arizona? No snow! It's beautiful year round. The upper level residents and faculty are kind and approachable. The program leadership takes resident education and wellness seriously. Resident salary to cost of living ratio is unmatched.

Wei Quan, MD

Hometown: Concord, CA
Medical School: University of Maryland, Baltimore
Hobbies: Hiking, movies, restaurants, video games, traveling. 
Interests: Minimally invasive surgery, Cardiothoracic surgery
Why University of Arizona? Location, variety of hospital rotations, and the residents. 

Yadira Villalvazo, MD

Hometown: Phoenix, AZ
Medical School: University of Arizona 
Hobbies:  Live music, running, hiking 
Interests: Global surgery 
Why University of Arizona? The diversity of people and interests. 


Mariam Astarabadi, MD, MS

Hometown: Laguna Niguel, California
Medical School: University of Arizona College of Medicine - Tucson
Hobbies: Hiking, baking, cooking, snowboarding, and being out in nature!
Clinical/Research Interests: Trauma/Acute Care Surgery, Global health

Why University of Arizona? I chose to pursue my surgical training at the University of Arizona because I fell in love with the program as a medical student here. This program has a welcoming culture, a tight-knit group of residents, and it values diversity, all of which are important to me. I was also drawn to this program because of Tucson’s diverse patient population. UArizona gives me the opportunity to work with the underserved locally, as well as in rural and global health settings. 

Casey Charlton, MD

Hometown: LOs Angeles, CA
Medical School: University of Arizona
Hobbies:  Basketball
Interests: Surgical oncology, reconstructive surgery, trauma
Why University of Arizona? The faculty 

Hope Conrad, MD

Hometown: Anderson, SC 
Medical School: University of South Carolina- Greenville School of Medicine
Hobbies:  Social dancing, traveling, hiking/camping, thrift shopping, taking care of my plants
Interests: Pre-medical and medical student education, trauma, critical care
Why University of Arizona? I chose UArizona because of its high volume trauma service and opportunities for research. I also appreciated that there was a medical school and a large undergraduate university nearby because I wanted opportunities to work with pre-medical and medical students during my training. All that being said- the best part of this program is definitely my team of co-residents! 

Valeria Fernandez, MD

Hometown: Cali, Colombia
Medical School: Wayne State University School of Medicine
Hobbies:  Knitting, hiking, gardening, reading, cooking
Interests: Trauma, Global Health 
Why University of Arizona? UArizona offered global health opportunities unlike anywhere else. I knew I wanted to learn around a deeply diverse population with substantial need, Tucson is just the place to learn, grow and become adaptable to all situations. This program offers culturally competent leaders who are visionaries in their fields, advocates for their patients and enjoy sharing their fund of knowledge. Lastly, the group of amazing residents I met were exactly the kind of colleagues I wanted to work alongside. 

Brendan Finnell, MD

Jared Holley, MD

Omowunmi Oluwo, MD

Hometown: Silver Spring, MD
Medical School: The George Washington University School of Medicine and Health Sciences
Hobbies:  Nail art, watching stand up comedy, dancing
Interests: Medical education
Why University of Arizona? Variety of clinical experiences. 

Danny Robles, MD

Donald Wathieu, MD

Tyler Wheeler, MD

Hometown: Rupert,Idaho 
Medical School: University of Washington
Hobbies:  Cycling and spending time with my kids
Interests: Rural General Surgery
Why University of Arizona? I liked the hybrid feel of the program with a mix of community, academic and rural surgery, in addition to the exceptional weather. 


Maria Aurora Casillas Abundis, MD

Hometown: Guadalajara, Mexico
Medical School: Instituto Tecnológico de Monterrey
Hobbies: Hiking, bird watching, cooking.
Clinical/Research Interests: Solid organ transplantation, HPB
Why University of Arizona? The cultural diversity in their residents and patients. Teamwork and support spirits.

Brian Darzi, MD

Hometown: Flint, MI
Medical School: American University of Antigua College of Medicine
Hobbies: Playing CATAN and other board games with family and friends, Art (Acrylic Painting, Pottery, Glass Fusion), Snowboarding, Sailing, Hiking, Fat Biking
Clinical/Research Interests: Trauma, Global Surgery and Health Equity, Hand and Microsurgery, Medical Technology(Augmented Reality and Head-Up Display in Surgery)
Why University of Arizona? The wide range of patient experiences offered (from university to community to Veteran Affairs to rural to global settings), the mentorship/research opportunities offered by distinguished faculty and the mountains.  

Tony Friday, MD

Nicholas Galouzis, MD

Hometown: Valparaiso, IN
Medical School: Indiana University School of Medicine
Hobbies: Sports, outdoor activities, eating (all the foods), traveling, spas
Clinical/Research Interests: Surgical Oncology, healthcare innovation, global surgery, surgical education/simulation
Why University of Arizona? The connection to a university while enabling a variety of training locations to diverse populations domestically and abroad. 

Christopher George Gomez, MD

Hometown: Tucson, AZ
Medical School: University of Arizona College of Medicine - Tucson
Hobbies: board games, video games, ping pong, soccer, volleyball, baking, spending time with friends and family
Clinical/Research Interests: Vascular Surgery
Why University of Arizona? The University of Arizona is home. They offer excellent training in a wide variety of subspecialties and training sites, and you can't beat the weather!

Micaela Kathleen Gomez, MD

Hometown: Reno, NV
Medical School: University of Nevada, Reno
Hobbies: Skiing and Horseback riding 
Clinical/Research Interests: Vascular Surgery
Why University of Arizona? The opportunity to train at a renowned academic institution with supportive faculty and residents.

Barite Gutama, MD

Abdelazeem Hamed Hassan Hamed

Shannon Rebekah Headley, DO, MA

Hometown(s): Orlando, FL; Tulsa, OK
Medical School: Oklahoma State University
Hobbies: Jiu jitsu, mixed martial arts, yoga, church and community involvement.
Clinincal/Research Interests: Rural, global, and pediatric surgery, with emphasis on whole person care.
Why the University of Arizona: As a former therapist (LPC), it was important for me to train at a surgery program that emphasized wellness and diversity. I also appreciated the evident pursuit of surgical excellence, diverse training opportunities, and the ability to take research years.

Muhammad Khurrum, MBBS

Hometown: Bahawalpur, Pakistan
Medical School: Jinnah Medical and Dental College
Hobbies: Hiking, traveling
Clinical/Research Interests: Quality Improvement Projects in Trauma and Acute Care Surgery, Hepato-pancreato-biliary Surgery and Surgical Oncology
Why University of Arizona? The attendings here are world-renowned experts in their respective fields and there are endless opportunities for academic development. The diversity of residents, hospital rotations, and patient populations are unmatched. Additionally, the productivity of the program in terms of research is exceptional.

Erika Krall Kness-Knezinskis, MD

Chelsey Morgan Lemaster, MD

Nancy Lopez, MD

Hometown: Los Angeles, California
Medical School: University of Arizona College of Medicine Phoenix
Hobbies: Salsa dancing, hiking, snowboarding, traveling
Clinical/Research Interests: healthcare disparities, health policy/advocacy, Latino health, immigration health, Global surgery
Why University of Arizona? The patient demographics and Spanish speaking patients, as well as the inclusive and welcoming culture that the residents and faculty provided from day one. 

Parastou Sazegar, MD

Kevin John Wang, MD

Hometown: Thousand Oaks, CA
Medical School: California Northstate University College of Medicine
Hobbies: Basketball, football, hiking, and cars
Clinical/Research Interests: Cardiothoracic Surgery
Why University of Arizona? It is an extremely close-knit program with an incredible diversity of patient populations and rotation settings. This program offers me ample opportunities to grow professionally and personally.

Andrew Martin Welch, MD

Hometown: Phoenix, AZ
Medical School: University of Queensland School of Medicine
Hobbies: Golf, Hiking, Running
(Clinical/Research) Interests: Vascular Surgery
Why University of Arizona? In my residency, I want a culture of collegiality amongst residents and attendings while also allowing me to reach my career goals. That is exactly what University of Arizona – Tucson offers.