Practice Locations

  • Moores Cancer Center at UC San Diego Health
    8:00 AM - 5:00 PM 8:00 AM - 5:00 PM 8:00 AM - 5:00 PM 8:00 AM - 5:00 PM 8:00 AM - 5:00 PMClosed Today Closed Today
    3855 Health Sciences Drive
    La Jolla, CA 92037
    US
  • PET/CT Center at UC San Diego Health
    8:00 AM - 4:30 PM 8:00 AM - 4:30 PM 8:00 AM - 4:30 PM 8:00 AM - 4:30 PM 8:00 AM - 4:30 PMClosed Today Closed Today
    3960 Health Sciences Drive
    La Jolla, CA 92037
    US
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Appointment Information

New Patient Registration:

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Please call the New Patient Registration line to confirm that the provider you wish to see is accepting new patients. We strongly encourage you to call your insurance company directly to verify this provider is in-network for your specific insurance plan.

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About Iain J. MacEwan, MD

Iain MacEwan, MD, is a board-certified radiation oncologist who specializes in treating cancers in children. As a radiation oncologist, Dr. MacEwan has expertise in the most advanced photon and proton technologies. He treats cancer using many modalities, including conformal radiation therapy (CRT), intensity-modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), stereotactic radiation surgery (SRS), and pencil beam proton therapy (PBT) / intensity-modulated proton therapy (IMPT).

As an assistant professor in the Department of Radiation Medicine and Applied Sciences at UC San Diego School of Medicine, Dr. MacEwan participates in the latest clinical trials while instructing medical students and residents. His research has focused on the use of proton therapy in pediatric malignancies, including medulloblastoma and ependymoma. He also has completed research in health disparities and cancer outcomes.

His research has appeared in journals such as Advances in Radiation Oncology, Oral Oncology, Magnetic Resonance Imaging, PloS One, and the Journal of Medicinal Chemistry.

Dr. MacEwan completed a residency in radiation oncology at Loma Linda University School of Medicine. He earned his medical degree at UC San Diego School of Medicine. He is board certified in radiation oncology.

He is an active member of professional associations such as the American College of Radiology and the American Society for Radiation Oncology.

Outside of work Dr. MacEwan enjoys spending time with his wife and young daughter. He is an avid surfer and also enjoys golf, tennis, and hiking in his hometown of Palm Springs, Calif.

UC San Diego Health Links
For more information, see Radiation Oncology and Cancer Services.

Insurance Information
UC San Diego Health accepts most major health insurance plans, but you should verify that your plan covers this provider and all services and locations. The information in the link below does not apply to affiliate providers, who are not employed by UC San Diego Health.
Health Insurance Plans Accepted

Medical Degree

  • UC San Diego, School of Medicine, San Diego, CA

Residency

  • Loma Linda University, School of Medicine, Loma Linda, CA

Gender

  • Male

Date Joined Staff

  • 2017-07-17

Board Certifications

  • American Board of Radiology
  • Radiation Oncology

Conditions and Treatments

  • Conformal Radiation Therapy (CRT)
  • Image-Guided Radiation Therapy (IGRT)
  • Stereotactic Radiosurgery (SRS)
  • Intensity-Modulated Radiation Therapy (IMRT)
  • Pediatric Cancer
  • Pencil Beam Proton Therapy
  • Intensity-Modulated Proton Therapy (IMPT)
  • Proton Therapy
Insurance Information
UC San Diego Health accepts most major health insurance plans, but you should verify that your plan covers this provider and all services and locations. The information in the link below does not apply to affiliate providers, who are not employed by UC San Diego Health.
Health Insurance Plans Accepted