Krisha Howell, MD

Krisha Howell, MD

Clinical Assistant Professor

Contact Information

Office Location: 
The University of Arizona Cancer Center
PO Box: 
Room Number: 
Phone Number: 
(520) 694-7236
(520) 694-3215


Dr. Howell earned her medical doctorate from Wayne State University, Detroit, Mich. Her undergraduate degree was in Honors Biophysics from the University of Michigan, Ann Arbor.
After completing internship in internal medicine at the University of Arizona, she completed a radiation oncology residency from the Medical University of South Carolina, Charleston; a National Cancer Institute-designated cancer center. She completed a fellowship in brachytherapy Princess Margaret Hospital/University of Toronto.
Dr. Howell is a Clinical Assistant Professor at the University of Arizona, Department of Radiation Oncology, and a member of the University of Arizona Cancer Center. She specializes in treating patients with gastrointestinal malignancies, sarcoma and metastatic cancer.
Professional Affiliations: 
American Society of Radiation Oncology (ASTRO)
American Society of Clinical Oncology (ASCO)
Radiological Society of North America (RSNA)
American Brachytherapy Society (ABS)


Board Certifications: 

Arizona Medical Board

Clinical Focus: 
Dr. Howell specializes in gastrointestinal and sarcoma directed radiotherapy. Clinical work-up and treatment plans are established in conjunction with the University of Arizona Cancer Center multidisciplinary cancer treatment team. She employs numerous different treatment techniques to best adapt therapy to suit individual patient needs. These include 3D external beam radiotherapy, IMRT, SBRT and Tomotherapy treatment. In select patient circumstances brachytherapy or motion controlled therapy may also be administered.
Clinical Practice Sites: 
The University of Arizona Cancer Center - Orange Grove
Radiation Oncology
The University of Arizona Medical Center - University Campus


Princess Margaret Hospital/University of Toronto
Medical School: 
Wayne State School of Medicine
Undergraduate School: 
University of Michigan


Summary of Research Activity: 
Dr. Howell has published research in peer-reviewed journals and has presented data at national research conferences. Her research includes comparative radiotherapy techniques for radiation delivery to the pancreas, research on the effects of lymph node ratio in pancreatic cancer and tumor-targeted radiotherapy. Her current areas of interest include brachytherapy and gastrointestinal malignancies. Dr. Howell is a member of the American Society of Radiation Oncology and the American Brachytherapy Society.
Collaborative Research: 
Yap ML, Cuartero J, Yan J, Pintilie M, Fyles A, Opfermann K, Levin W, Manchul L, Milosevic M. The Role of Prophylactic Para-Aortic Lymph Node Irradiation in Cervix Cancer. Poster Presentation at the annual European Society for Therapeutic Radiation and Oncology meeting, May 2012.
Opfermann KJ, Cooper SL, Jenrette JM. Volumetric Increase in Schwannoma on Surveillance Brain MRIs Following Stereotactic Radiosurgery: A Review of Predictive Factors. Oral Presentation at the annual European Society of Radiology meeting, March 2011.
Opfermann KJ, Wahlquist AH, Garrett-Mayer E, Cannick DT, Marshall DT. Adjuvant Radiotherapy and Lymph Node Status for Pancreatic Cancer: Results of a Study from the Surveillance, Epidemiology, and End Results (SEER) Registry Data. Oral Presentation at the annual American Society for Radiation Oncology meeting, Oct. 2012.
Selected Publications: 
Dowdall JR, Opfermann KJ, Kim H, Lin H. A Case of Radiation-Induced Multifocal Laryngeal Angiosarcoma Presenting as a Diagnostic Dilemma. Case Reports in Otolaryngology. 2012.
Taylor R, Opfermann K, Jones BD, Terwilliger LE, McDonald DG, Ashenafi MS, Garrett-Meyer E, Marshall DT. Comparison of Radiation Treatment Delivery for Pancreatic Cancer: Linac Intensity-Modulated Radiotherapy Versus Helical Tomotherapy. Journal of Medical Imaging and Radiation Oncology. 2012;56(3):332-337.
Opfermann KJ, Wahlquist A, Watkins J, Kohler M, Jenrette J. Impact of Point A Asymmetry on Local Control and Survival for Low Dose-Rate (LDR) Brachytherapy in Cervical Cancer. Journal of Contemporary Brachytherapy. 2012;4(1):3-7.
Picard JC, Golshayan A, Marshall DT, Opfermann KJ, Keane TE. The Multi-Disciplinary Management of High-Risk Prostate Cancer. Urologic Oncology: Seminars and Original Investigations. 2012;30(1):3-15.
Opfermann KJ, Lai Z, Essenmacher L, Bolton S, Ager J, Forman JD. Intermittent Hormone Therapy in Nonmetastatic Prostate Cancer. Clinical Genitourinary Cancer. 2006;5(2):138-143.