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Krishan R. Jethwa, MD

Therapeutic Radiology, Gastrointestinal Radiotherapy, Head & Neck Radiotherapy, Prostate & Genitourinary Radiotherapy, Thoracic Radiotherapy
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Patient type treated
Accepting new patients
Referral required
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Dr. Krishan R. Jethwa is a radiation oncologist who currently serves as Assistant Professor of Therapeutic Radiology at the Yale School of Medicine. He grew up in Minot, North Dakota and joined the faculty at Yale after completing his residency training in radiation oncology at the Mayo Clinic in Rochester, MN.

Dr. Jethwa primarily specializes in radiation therapy for gastrointestinal and head and neck cancers, with additional clinical focuses in skin, lung, and genitourinary cancers. He is particularly passionate about incorporating advanced radiotherapy techniques, such as proton therapy, into clinical practice. Additionally, his research focuses on integrating anatomic, genomic, molecular, diagnostic imaging, and response-based risk stratification to guide the treatment of patients. The ultimate goal being individually tailored cancer care to maximize cancer control rates, reduce side effects of treatment, and improve the quality of life for patients. 


  • Assistant Professor of Therapeutic Radiology

Education & Training

  • Residency
    Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine, Rochester, MN (2019)
  • Internship
    University of North Dakota School of Medicine and Health Sciences (2015)
  • MD
    University of North Dakota (2014)
  • BA
    Gustavus Adolphus College, Biochemistry and Molecular Biology

Additional Information

  • Lawrence + Memorial Cancer Center
    230 Waterford Parkway South
    Waterford, CT, 06385
  • Smilow Cancer Hospital Care Center - Hamden
    2080 Whitney Avenue
    Hamden, CT, 06518
  • Smilow Cancer Hospital at Yale New Haven
    35 Park Street
    New Haven, CT, 06511