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Medical Residency

Residency training in the UC Irvine Department of Radiation Oncology is an integrated program consisting of several different sites:

In collaboration with our integrated sites, we offer state-of-the-art radiation oncology technology and expertise. This allows us to provide a wealth of knowledge for students and trainees. Collectively we offer the following staff and facilites: 

  • 10 radiation oncologists
  • 6 physicists
  • 3 radiobiologists
  • Megavoltage linear accelerators
  • Kilovoltage unit
  • Tomotherapy unit
  • Gamma knife radiosurgery (Perflexion)
  • Cyberknife
  • Hyperthermia
  • High dose rate brachytherapy
  • Low dose rate brachytherapy
  • Mammosite
  • SAVI brachytherapy
  • Therasphere and SIRsphere
  • IMRT (intensity-modulated radiation therapy)
  • IGRT (image-guided radiation therapy)
  • VMAT (volumetric modulated arc therapy)
  • 3DCRT (3D conformal radiation therapy)


The UC Irvine radiation oncology residency program is a 4-year program (PGY 2-5). Residents are expected to have completed a PGY-1 year in an ACGME-accredited internal medicine, general surgery or equivalent program. 

Program Structure

Clinical rotations are in 4-month blocks. Residents rotate through all three sites during four years of training with at least 20 months at the UC Irvine site. There is an 8-month research block for either clinical or basic science research.

During clinical rotations, residents are an integral part of the healthcare team. They are expected to work closely with the attending physicians, nurses, dosimetrists, therapists, physicists and other ancillary staff to deliver excellent care. They are closely supervised on a one-on-one basis and during these rotations, they have hands-on experience with all clinical aspects of radiation oncology. 

While informal one-on-one teaching occurs during the course of the entire rotation, each week residents have a dedicated academic half-day with a structured didactic lecture series that covers topics in radiation therapy physics, radiobiology and clinical oncology.

The core faculty of medical physicists, radiobiologists and radiation oncologists are among the featured lecturers, but we also have many invited speakers from other faculties and departments across the UC Irvine Medical Center and the university as a whole. 

The department also has resident-led seminars and journal club series, both of which are supervised by faculty members. Each morning, residents are expected to attend morning conference where patients are discussed and faculty are present to moderate resident learning. Residents are also expected to attend numerous other presentations, lectures and tumor board conferences offered in collaboration with other departments. Senior-level residents are also offered a chance to participate in the mock oral boards offered annually 


Residents are expected to participate in ongoing independent clinical or basic science research throughout the entire training course.  We also provide an eight-month rotation whereby residents can immerse themselves in scientific research are expected to complete a publishable project in basic science or clinical research. 


All interested applicants must apply through ERAS. We currently have an opening for a PGY2 position in July 2021.

Current Residents

Pericles Ioannides

Pericles Ioannides, PGY-4

Undergraduate School: Indiana University

Medical School: Indiana University School of Medicine

Internship: Medical College of Wisconsin

Hobbies/Activities: Spending time outside, running, hiking, tennis, beach volleyball

Favorite aspect of Orange County: The mountains, beaches, and many days of sunshine and perfect weather

Ravichandran Ramakrishnan

Ravichandran Ramakrishnan, PGY-3

Undergraduate School:  John Hopkins University 

Medical School: Ohio State College of Medicine

Internship: Wayne State University School of Medicine

Hobbies/Activities: Going to beaches

Favorite aspect of Orange County: Plentiful outdoor activities 

Meng Gan

Meng Gan, PGY-3

Undergraduate School: Washington University in St. Louis

Medical School: University of Utah 

Internship: Loma Linda University 

Hobbies/Activities: Searching for milk tea cafes 

Favorite part of OC: Love the easy access to everything

John Yeakel

John Yeakel, PGY-2 

Undergraduate School: University of Wisconsin - La Crosse

Medical School: University of Minnesota Medical School

Internship: University of Wisconsin - Madison

Hobbies/Activities: Working out, gaming, cooking, or finding a restaurant with good a cheeseburger

Favorite aspect of Orange County: There are so many good restaurants and everything is just a short drive from where I live!

For more information, please contact our Residency Program Coordinator, Ruby Pulido, (714) 456-8074, or via email at