Fight Cancer With Laser-like Precision

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Maximum Treatment.
Minimum Side Effects.

California Protons, located in San Diego, is the only center in the state using clinically proven, cutting-edge technology to deliver proton therapy radiation with unmatched precision and the utmost care. Itโ€™s one of the safest and most effective cancer treatments in the world, which can result in high cure rates, reduced side effects and improved outcomes.

Benefits of Our
Pencil Beam Technology

Compared to standard X-ray radiation and other treatment technologies, California Protons offers patients:

Unmatched Precision

Proton beams can be manipulated to conform to the unique size and shape of the tumor and stop at its edge precisely.

Radiation Dose Variation

Doctors can vary the intensity of the radiation dose at any point within the tumor to optimize treatment.

Treatment for More Tumor Types

Patients with tumors that are larger, more irregularly shaped or found near critical organs or structures can be treated.

Lower Incidence of Secondary Tumors

Reduced radiation to healthy tissues lowers the risk of secondary cancer.

Reduced Side Effects

Diarrhea, nausea, headache and loss of appetite are less likely.

Faster Treatment Times

Our treatment plans can be loaded into the computer and completed in a matter of minutes.

A Winning Team Committed to Your Fight

A Winning Team Committed to Your Fight

California Protons is home to one of the worldโ€™s most experienced radiation oncology teams in the proton space. With decades of combined experience, our doctors are committed to delivering an unparalleled level of clinical care. In fact, theyโ€™ve treated more than 14,000 patients with proton therapy.

Is Proton Therapy Right for You?

A highly accurate and much less invasive form of cancer treatment, proton therapy is recommended for numerous types of both common and rare cancers and tumors, including but not limited to:

  • Breast Cancer
  • Pediatric Cancers
  • Lung Cancer
  • Testicular Cancer
  • Prostate Cancer
  • Brain & Spine Tumors
  • Head & Neck Cancers
  • Lymphoma

Success Stories

  • "At age 28, I was driving alone on the LA freeway when I started seeing double. The next day, I was diagnosed with an inoperable mass located in the middle of my brain stem. Because of the tricky location, proton therapy was the safest radiation option for me. Dr. Chang and all the staff were incredibly knowledgeable and helpful throughout the entire process. I felt welcomed and comfortable each day I came in for treatment. A huge thank you to the insurance representative, Karen, who took care of everything for me while I was undergoing 28 treatments. Overall, a wonderful experience! I highly recommend California Protons. They literally saved my life and I am forever grateful!"

    Alee Boychuk

    Brain and Spine Cancer Patient

  • "If anyone reading this wants to get proton radiation but meets resistance, hang in there and find people who believe in it, as I did. In my case its cost was far less than a 15 hour surgery and monthsโ€ฆor yearsโ€ฆof rehab, for sure. Not to mention the non-financial costs of deep infection, lymphedema, etc. and above all, lack of mobility associated with the surgery. My gratitude for all this is off the charts, as you can imagine. I highly recommend proton therapy at California Protons for tumors with which it is effective, such as mine."

    David Bowles

    Sarcoma Patient

  • "I completed treatment for prostate cancer at California Protons back in March 2018. Insofar as the people, the facility and the actual treatment are concerned, I would give them a 10+ if I could. The front desk staff to the technicians and everyone in-between were as nice, professional and concerned with my well being as could be. My doctors actually recommended surgery, radioactive implants and regular radiation but my decision to use proton therapy was driven by my desire to be able to pinpoint my cancer and have as minimal side effects as possible. Today, I am cancer-free and living a normal life with energy and vigor. Thank you Dr. Rossi and California Protons for giving me back my health."

    Sal Mariscal

    Prostate Cancer Patient

A better tomorrow starts today