Nathan Kim, M.D., Ph.D., is an Associate Professor of Radiation Oncology at UT Southwestern, specializing in treatment of breast cancer. He studied engineering in college, received a master’s degree in biomedical engineering from Johns Hopkins, and earned a combined M.D./Ph.D. from Boston University in 2001.

Dr. Kim then completed an internship in internal medicine and a residency in radiation oncology at Vanderbilt University Medical Center. Board certified by the American Board of Radiology, he brought years of private practice and academic medicine experience with him when he joined the UT Southwestern faculty in 2016.

“I feel that UT Southwestern and Simmons Cancer Center continue to move at an extraordinarily fast pace in the right direction. In addition to being the only National Cancer Institute-designated comprehensive cancer center in North Texas, , we are focusing not just on basic science but also on translating the basic science into clinical practice,” Dr. Kim says. “I really feel this is a great place to be part of something special.”

Dr. Kim uses the latest radiation therapy techniques to treat breast cancer.

His research has been published in the International Journal of Radiation Oncology, Biology, Physics and other peer-reviewed publications, and he is a member of the American Society of Therapeutic Radiology and Oncology.

Meet Dr. Kim

Breast Radiation Oncologist in Dallas

Nathan Kim, M.D., Ph.D., did not start his educational career with a goal of being a radiation oncologist. In fact, his Ph.D. is in biochemistry. But his personal experience with family members and cancer while he was in medical school led him to develop a strong interest in the disease and, now, as an Associate Professor of Radiation Oncology at UT Southwestern, it has helped shape his patient care philosophy.

“I don’t just believe in short-term care but really developing a relationship with patients for long-term care so it doesn’t end when their treatment ends. I really try to follow up with them and be part of their survivorship process as well.”

“Having family members who have gone through cancer treatment and benefited from it reminds me to treat my patients the way I would want my family members treated,” Dr. Kim says. “That includes showing respect and compassion but also looking for every realistically possible option that’s out there for them.”

Especially for breast cancer, he says, there is a lot to consider.

“Depending on the patient’s specific diagnosis, there may be several viable options for treatment, and the field is constantly moving,” Dr. Kim says. “For example, should the patient consider a shorter course of radiation versus the historic standard? Should the patient consider a clinical trial or even the option of observation without therapy? Not everybody fits into a box. So, depending on the situation, patients may need more comprehensive discussion of their options.

“Part of my role is breaking things down for them and simplifying things to help them in their decision making as they go through this difficult time.”

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Education & Training
  • Graduate School - Boston University School of Medicine (1993-1997)
  • Residency - Vanderbilt University Medical Center (2002-2006), Radiation Oncology
  • Internship - Vanderbilt University Medical Center (2001-2002), Internal Medicine
  • Medical School - Boston University School of Medicine (1997-2001)
  • Other Post Graduate Training - Boston University School of Medicine (1993-1997)
Professional Associations & Affiliations
  • American Society of Therapeutic Radiology and Oncology
Honors & Awards
  • Sidney Cooperband Award 2001, Boston University School of Medicine
  • ASTRO Basic Science Travel Grant 2004
  • ABR Holman Pathway Research Award 2004, RSNA
  • RSNA Resident Trainee Award and Travel Grant 2005
  • AACR AFLAC Scholars in Training Award 2005
Books & Publications
  • Use of aspirin in locally advanced cancer
  • Particle therapy applications for breast cancer
  • Optimizing advanced technology utilization for radiation therapy
  • Mitigation of normal tissue injury from radiation therapy
  • Combined modality therapy for breast cancer

Clinical Focus

  • Breast Cancers
  • Genitourinary Cancer
  • Brain Metastases
  • Cancer Genetics
  • Kidney Cancer

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Q&A by Dr. Kim