Radiation Oncology Residents


Matthew Mills

Matthew Mills, MD
Matt was born and raised in Tampa, FL. He went to college at the University of Florida, where he majored in Psychology. Matt worked in the lab of Dr. Robert Gillies in the department of Imaging and Cancer Metabolism at Moffitt Cancer Center, investigating in vivo tumor metabolism. He went to medical school at the University of South Florida and completed his Transitional Year at Riverside Regional Medical Center in Newport News, Virginia. Outside of medicine, Matt enjoys playing basketball, visiting the surrounding beaches, watching movies, and spending time with family.

Why I chose this residency program: I chose Moffitt Cancer Center for a variety of reasons, including the impressive patient volume, the camaraderie of the residents and faculty, and the abundance of research opportunities. I knew that I would receive excellent clinical training with great support to pursue research, all with a great quality of life.


  1. Mills, MN, Reddy, AV, Richardson, LK, Richardson, KM, Kersh, CR. The Prognostic Role of Pretreatment Neutrophil to Lymphocyte Ratio (NLR) in Malignant Adrenal Lesions Treated with Stereotactic Body Radiation Therapy (SBRT). American Journal of Clinical Oncology. 2019.
  2. Ahmed, KA, Liveringhouse, CL, Mills, MN, Figura, NB, Grass, GD, Washington, IR, Harris, EE, Czerniecki, BJ, Bulemncranz, PW, Eschrich, SA, Scott, JG. Utilizing the genomically adjusted radiation dose (GARD) to personalize adjuvant radiotherapy in triple negative breast cancer management. EBioMedicine. 2019.
  3. Mills MN, Grass GD, Ahmed KA, Liveringhouse CL, Montejo MJ, Robinson TJ, Chavez JC, Harrison LB, Kim S. Radiotherapy for early stage diffuse large B-cell lymphoma with or without double or triple hit genetic alterations. Leukemia & lymphoma. 2018 Nov 12:1-8.
  4. Mills MN, Yang GQ, Oliver DE, Liveringhouse CL, Ahmed KA, Orman AG, Laronga C, Hoover SJ, Khakpour N, Costa RL, Diaz R. Histologic heterogeneity of triple-negative breast cancer: a National Cancer Centre Database analysis. European Journal of Cancer. 2018 Jul 31;98:48-58.

Anupam Rishi

Anupam Rishi, MBBS
Anupam was born and raised in India. He attended Calcutta University for medical school and later pursued Residency in Radiation Oncology from Post Graduate Institute of Medical Education and Research, Chandigarh, and Senior Residency form Tata Memorial Hospital, Mumbai. During residency he initiated and completed Randomized Study in locally advanced oropharyngeal cancers which received an ASTRO abstract award. Anupam completed a Surgical Intern year at USF before starting his residency at Moffitt. Outside work, Anupam, a former college-level Cricket player in India, loves to travel with his wife Papri (a current USF Ob/Gyn resident), and cook recreationally. He has a new-found interest in fishing.

Why I chose this residency program: I chose Moffitt/USF for my residency training as Moffitt offers a very strong research infrastructure, large volume of patients and collaborative environment for both clinical or translational research. Most importantly, the Radiation Oncology department has very cordial environment, and the faculty are very invested in resident well-being and mentorship. In addition, no one can deny beautiful life in Tampa, many vacation-worthy nearby places and beach in Florida. Love the sunshine state!


  1. Caudell JJ, Torres-Roca JF, Gillies RJ, Enderling H, Kim S, Rishi A, Moros EG, Harrison LB. The future of personalised radiotherapy for head and neck cancer. Lancet Oncology. 2017 May;18(5):e266-e273.
  2. Lacas B, Bourhis J, Overgaard J, Zhang Q, Grégoire V, …, Rishi A,… (MARCH Collaborative Group). Role of radiotherapy fractionation in head and neck cancers (MARCH): an updated meta-analysis. Lancet Oncology. 2017 Sep;18(9):1221-1237.
  3. Rishi A, Ghoshal S, et al. Comparison of concomitant boost radiotherapy against concurrent chemoradiation in locally advanced oropharyngeal cancers: a phase III randomised trial. Radiother Oncol. 2013 Jun;107(3):317-24.
  4. Rishi A, Hui Huang S, O'Sullivan B, Ringash J, Waldron J, Sun A, Bayley A. Outcome following radiotherapy for head and neck basal cell carcinoma with aggressive features. Oral Oncology 72, 157-164.
  5. GQ Yang, R Mhaskar, A Rishi, AO Naghavi, JM Frakes, K Almhanna, Fontaine, J, Pimiento, J. M, Hoffe, S. E. Intensity-modulated radiotherapy at high-volume centers improves survival in patients with esophageal adenocarcinoma receiving trimodality therapy. Diseases of the Esophagus 2018.
  6. A Rishi, E Song, GG Zhang, K Latifi, I Eaford, A Mviera, J Pimiento, J Fontaine, EG Moros, LB Harrison, SE Hoffe, JM Frakes. Integrated CT and 18F-FDG PET Based Radiomic Prediction Models for Pathological Response and Outcome in Esophageal Cancer Patients Treated with Neoadjuvant Chemoradiotherapy. IJROBP, 102 (3), e40-e41 2018.
  7. Hosni A, Dixon PR, Rishi A, Au M, Xu W, Song Y, Chepeha DB, Goldstein DP, Huang SH, Kim J, O'Sullivan B, Waldron J, Bratman SV, de Almeida JR. JAMA Otolaryngol Head Neck Surg. 2016 Dec 1;142(12):1208-1215.


Ammoren DohmAmmoren Dohm, MD
Ammoren is a native of rural Minnesota and the oldest of five siblings. He attended Brigham Young University where he majored in neuroscience and married his lovely wife. Together they moved to North Carolina where Ammoren attended medical school at Wake Forest and his wife completed her MHA. They recently purchased a home in Wesley Chapel and are looking forward to their time in Florida. In their free time, they enjoy traveling, hiking, beach days, tennis, pickleball, and dinner with family and friends.

Why I chose this residency program: During the interview process, I was impressed with Moffitt leadership's clear vision and execution strategy for the Radiation Oncology Department. I wanted optimal training opportunities, and I knew Moffitt could deliver because it has been nationally ranked by U.S. News & World Report since 1999, is consistently ranked in the Top 10, is one of only 51 National Cancer Institute-designated Comprehensive Cancer Centers nationwide, and is a research powerhouse with over 450 clinical trials. I found the culture at Moffitt to be ideal for me: warm, encouraging, and ambitious. Moffitt is also geographically appealing as Tampa is one of the country’s top vacation and retirement destinations.

Casey LiveringhouseCasey Liveringhouse, MD
Casey Liveringhouse grew up in Plymouth, Minnesota. He attended Luther College in Decorah, Iowa, where he majored in biology. He completed medical school and his internship in internal medicine at the University of South Florida. In his free time, Casey enjoys fishing, golfing, and spending time with his son, wife, and dogs.

Why I chose this residency program: I chose to do my residency at Moffitt Cancer Center because of the collegial atmosphere and stellar reputation, both clinically and in research. As one of the NCCN Member Institutions, Moffitt combines high clinical volume with exposure to rare cancers, which provides excellent clinical training. Resources for research are abundant, with an emphasis on developing strategies for the personalization of radiation therapy, which will be increasingly important as the field of oncology evolves. Most importantly, the camaraderie between residents and faculty fosters a supportive culture where I felt like I fit in very well.

Maria SandovalMaria Sandoval, MD
Maria Luisa (Mari) was born and raised in Quito, Ecuador and came to the US at age 18 for college. She attended Clark University in Worcester, MA then pursued a Masters in Physiology at Case Western Reserve University in Cleveland, OH where she completed her thesis in breast cancer stem cell markers and their role in response to treatment. She then attended New York Medical College for medical school and completed her intern year in medicine at the University of South Florida. In her free time, she enjoys boating with her husband and dog, traveling, drawing cartoons and organizing get-togethers for friends and family.  

Why I chose Moffitt

I chose to do my residency at Moffitt Cancer Center because it really encompassed all the features that I felt were essential in a program. One of the many strengths of this program was the genuinely warm and collegial atmosphere not just between residents but between attendings and residents. At Moffitt Cancer Center I have found that each attending and staff member in our department is truly committed to resident education. Additionally, as a high-volume cancer center and the only NCI-designated Comprehensive Cancer Center based in Florida, it provides an extensive breadth of opportunities for clinical training as well as abundant research opportunities. Finally, Tampa is a great place to live with many exciting indoor and outdoor activities.


  1. Sandoval, ML, Rosen, EB, Robert, AJ, Nelson, JA, Matros, E, Gelblum, DY. Immediate dental implants in fibula free flaps to reconstruct the mandible: A pilot study of the short‐term effects on radiotherapy for patients with head and neck cancer. Clin Implant Dent Relat Res. November, 2019; 15.
  2. Sandoval, ML, Rimner A., Lee N., Gelblum D.Y. Outcomes of patients with concurrent Head and Neck and Lung malignancies who were treated for cure with multi-modality approach. Poster presented at American Society for Radiation Oncology, Chicago, IL. September 2019
  3. Sandoval, ML, Yuan Z G., Grass D., Felder S., Sanchez J., Dessureault S., Imanirad I, Kim RD., Hoffe SE., Frakes JM. Impact of Sarcopenia on outcomes in patients with rectal carcinoma treated with tri-modality therapy. Poster presented at Gastrointestinal Symposium, San Francisco, CA. January 2019
  4. Varadan, V., Sandoval, M., & Harris, L. N. Biomarkers for Predicting Response to Anti- HER2 Agents. Advances in Experimental Medicine and Biology Novel Biomarkers in the Continuum of Breast Cancer. March, 2016; 155-167.


John Michael "JM" Bryant, MD
JM Bryant MDJohn Michael "JM" Bryant born and raised in Miami, Florida. He attended Florida International University in Miami for his undergraduate degree in Electrical Engineering and the Herbert Wertheim College of Medicine in Miami for medical school. In his spare time, he enjoys spending time with his family, going to sporting events, and exploring new restaurants. 

Why I chose this residency program: I chose Moffitt Cancer Center because of the breadth of research and clinical opportunities paired with an institutional culture that prioritizes collegiality and interdisciplinary teamwork throughout the entire center. The staff prioritizes the education and mentoring of residents along with providing significant guidance and support in resident-led research. Furthermore, the combination of Moffitt’s high clinical volume and resident autonomy offers superb clinical training for my future career.


  1. Chuong MD, Bryant J, Mittauer KE, Hall M, Kotecha R, Alvarez D, Romaguera T, Rubens M, Adamson S, Godley A, Mishra V, Luciani G, Gutierrez AN. (2020). Ablative 5-Fraction Stereotactic Magnetic  esonance-Guided Radiation Therapy With On-Table Adaptive Replanning and Elective Nodal Irradiation for Inoperable Pancreas Cancer. Pract Radiat Oncol. 
  2. Chuong, M., Bryant, J., Hartsell, W., Larson, G., Badiyan, S., Laramore, G. E., … Vargas, C. (2019). Minimal acute toxicity from proton beam therapy for major salivary gland cancer. Acta Oncologica, 59(2), 196–200. https://doi.org/10.1080/0284186x.2019.1698764 
  3. John Bryant, Kathryn Mittauer, Rupesh Kotecha, Minesh Mehta, Tino Romaguera, Diane Alvarez, Alonso Gutierrez, and Michael Chuong. Favorable early outcomes of abdominopelvic reirradiation using dose-escalated magnetic resonance image-guided radiation therapy. Poster presented at the 2020 Annual American Society for Radiation Oncology (ASTRO) Meeting. 
  4. John Bryant, William Hartsell, Henry Tsai, William F Regine, George Laramore, John Chang, Craig Stevens, Carlos Vargas, and Michael Chuong. Proton beam therapy for abdominopelvic reirradiation: Outcomes from the Proton Collaborative Group REG001-09 Trial. Poster presented at the 2020 Annual American Society for Radiation Oncology (ASTRO) Meeting. 
  5. John M. Bryant, Jose Lutzky, and Nicolas Kuritzky. Dual checkpoint blockade with both CTLA4 and PD1 antibodies and hypofractionated radiation in patients with metastatic melanoma: Initial 3 patients. Presented at the  2017 International Conference on Immunotherapy-Radiotherapy Combinations. 

Ruben J. Cruz-Chamorro, MD
Ruben Cruz Chamorro, MD
Ruben J. Cruz-Chamorro was born and raised in Ponce, Puerto Rico. He obtained a Bachelor’s degree in Biomedical Sciences at the University of Puerto Rico in Ponce. He was then accepted into Ponce Health Sciences University School of Medicine where he obtained both his Masters degree in Medical Sciences and his Doctorate in Medicine (MD). In his spare time, he enjoys songwriting, exploring new restaurants and spending time with family.

Why I chose this residency program: I chose Moffitt Cancer Center because education and training are a fundamental part of their core mission. The staff prioritizes the learning experience of residents at all times. Furthermore, the high clinical volume combined with the unlimited research opportunities makes Moffitt one of the fastest growing cancer centers in the world.


  1. J.R. Gunther, C. Park, B. Dabaja, S.A. Milgrom, R. J. Cruz Chamorro, L.J. Medeiros, J. Khoury, N. Garg, B. Amini, R. Steiner, R. Nair, P. Strati, J.R. Westin, H. Lee, N. Fowler, L. Nastoupil, S.S. Neelapu, C.C. Pinnix. Radiation therapy for salivary gland MALT lymphoma: ultra-low dose treatment achieves encouraging early outcomes and spares salivary function. Leuk Lymphoma. 2019; PMID: 31373240.
  2. C.C. Pinnix, J.R. Gunther, S.A. Milgrom, R. J. Cruz Chamorro, L.J. Medeiros, J. Khoury, B. Amini, S.S. Neelapu, H. Lee, J. Westin, N. Fowler, L. Nastoupil, B. Dabaja. Outcomes after Reduced-Dose Intensity Modulated Radiation Therapy for Gastric Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma. Int J Radiat Oncol Biol Phys. 2019; PMID: 30769175.
  3. J.R. Gunther, C. Park, S.A. Milgrom, B. Dabaja, R. J. Cruz Chamorro, L.J. Medeiros, J. Khoury, N. Garg, B. Amini, M.A. Fanale, H. Lee, N. Fowler, L. Nastoupil, S.S. Neelapu, C.C. Pinnix. Radiation Therapy for Salivary Gland MALT Lymphoma: Ultra Low Dose Treatment Spares Salivary Function and Achieves Excellent Outcomes. Int J Radiat Oncol Biol Phys. 2018; 102(3): e244-e244.
  4. C.C. Pinnix, J.R. Gunther, S.A. Milgrom, R. J. Cruz Chamorro, L.J. Medeiros, J. Khoury, B. Amini, M.A. Fanale, S.S. Neelapu, H. Lee, J. Westin, N. Fowler, L. Nastoupil, B. Dabaja. Excellent Outcomes after Reduced-Dose Intensity Modulated Radiation Therapy for Gastric Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma. Int J Radiat Oncol Biol Phys. 2018; 102(3): S90-90.


Emily KeitEmily Keit, MD

Emily was born in southern New Jersey but was raised primarily in Nebraska. She attended college at the University of Nebraska at where she studied biotechnology and chemistry. She attended medical school at University of Nebraska Medical Center. She completed her preliminary internal medicine year with University of South Florida and Moffitt. Interests outside of medicine include spending time in nature. 

Why I chose this residency program: I chose to do my training at Moffitt for many reasons. First, as an NCI Comprehensive Cancer Center, there are abundant research opportunities. Moffitt fosters a collaborative research environment between clinicians of all oncologic specialties, bench researchers, and computer modeling-based researchers. There is also an emphasis here on mentorship, and leadership strives to foster residents' individual interests and passions. I was confident that I would receive excellent clinical training and have the support needed to achieve my clinical and research-based goals.  Lastly, during my Internal Medicine intern year here, I was able to experience the overarching culture of Moffitt and the shared goals of providing personalized and holistic patient care. I am honored to be a part of this culture and community.

Vaseem Khatri. MD

Vaseem Khatri was born in New Jersey and raised in Rochester Hills, Michigan. He completed his undergraduate studies in Biomedical Physics at Wayne State University. He then attended the University of Cincinnati College of Medicine, followed by a preliminary year in Internal Medicine at The Christ Hospital in Cincinnati. In his free time, he enjoys dancing, watching movies, and spending time with his beautiful wife. 

Why I chose this residency program: I chose Moffitt Cancer Center because it fulfilled and exceeded every expectation for a residency program. The collegiality and support between residents, attendings, and staff, as well as across disciplines creates the optimal atmosphere. The leadership and the faculty take a true interest in the development of the residents as top-tier radiation oncologists, holistic physicians, and as humans. Additionally, Moffitt Cancer Center provides exceptional clinical and research opportunities. With its high patient volume, unique case load, extensive network, and available treatment modalities, it provides comprehensive training. Moffitt is on the forefront of radiation oncology research and has abundant opportunity and resources for its residents. Finally, Tampa is an excellent place to live, with unlimited activities, stellar year-round weather, and beautiful beaches and parks. 

Justyn NakashimaJustyn Nakashima, DO

Justyn was born in Miami, FL and raised in Orlando, FL. He studied at the University of Central Florida majoring in Health Sciences and then attended Edward Via College of Osteopathic Medicine for medical school in Auburn, AL. He completed a preliminary medicine year at USF before starting his residency at Moffitt. In his free time, he loves to spend time with his wife and dog “Oslo”, explore new restaurants/breweries, go to the beach, play golf/soccer, go fishing, and travel.  

Why I chose this residency program

I was very impressed by the abundance of research opportunities and clinical training that Moffitt offers. As a high-volume center, I knew that Moffitt would provide excellent clinical exposure and give me the opportunity to see and treat rare cancers.  I was drawn to the program’s focus on personalized therapy utilized in both the clinical and research settings. The camaraderie between the residents and the resident-focused environment provided by the faculty made it an easy decision for me.