Sherman Oaks Radiation Oncology

City of Hope® Sherman Oaks Radiation Oncology provides the surrounding communities with incomparable cancer care and radiation treatments close to home. We are trained in the latest advances in radiation oncology and treat patients using multiple leading-edge technologies.

34.1711121, -118.4654619

5522 Sepulveda Boulevard
Sherman Oaks , CA 91411
All Patients

Monday through Friday: 8 a.m. to 5 p.m.
Closed on major federal holidays

Visitor Policy
  • Clinical Services
  • Insurance Information

City of Hope cares for patients from prevention through survivorship by pairing our expertise in numerous cancers and conditions with world-class technologies and services.

Radiation Oncology

City of Hope’s radiation oncology program is one of the largest and most experienced in Southern California. We offer a comprehensive set of specialized services and advanced technologies, planned and provided by our uniquely trained staff, for a broad range of cancer diagnoses.

Our team is trained in the latest advances in radiation oncology and may use one of the following therapies to treat your cancer:

  • 3-D conformal radiation therapy
  • Computerized tomography (CT) treatment planning
  • High-dose-rate brachytherapy
  • Image-guided radiation therapy
  • Intensity-modulated radiation therapy
  • Stereotactic body radiotherapy
  • Stereotactic radiosurgery

Is My Insurance Accepted?

View a list of insurance companies that City of Hope currently contracts with for its locations and physicians. Even if your plan is included, check with your insurance company to make sure you are covered. Your insurance company/medical group will tell you if you need any authorizations.

If you wish to receive treatment at City of Hope, but we're not currently contracted with your insurance plan, contact your insurance company and ask about obtaining authorization to receive treatment here.

View our pricing and billing

Provider based billing

No Surprise Billing

When you're treated by an out-of-network provider at an in-network facility, you are protected from balance billing. In these cases, you shouldn't be charged more than your plan's copayments, coinsurance and/or deductible. Learn about your rights and protections against surprise medical bills

Explore City of Hope Sherman Oaks Radiation Oncology

Working closely with community physicians, City of Hope Sherman Oaks Radiation Oncology acts as a community partner in the radiation therapy care of residents in the Sherman Oaks vicinity.

City of Hope Sherman Oaks
Front of the Sherman Oaks building

Our Physicians

Leslie E. Botnick, M.D.
Radiation Oncologist

Leslie Botnick, M.D., now a radiation oncologist with City of Hope, helped bring about the significant advance of treating many breast cancer patients with lumpectomy plus radiation, instead of mastectomy.

Ronny Kalash, D.O.
Radiation Oncologist

Ronny Kalash, D.O., is an assistant clinical professor, Department of Radiation Oncology at City of Hope in Mission Hills and Santa Clarita, California.

April Vassantachart,M.D.
April Vassantachart, M.D.
Radiation Oncologist

Radiation oncologist April Vassantchart, M.D., knows that it is a privilege to support and guide patients through their cancer journey. As a physician, Dr. Vassantchart believes that her relationship with her patients requires a special connection that involves listening and learning on both ends to

Need Help?

We’re here for you, contact us and we’ll answer any questions.