Sherman Oaks Radiation Therapy Center

Together: A Better Way To Fight Cancer

Sherman Oaks Radiation Therapy Center Provides San Fernando Valley local access to highly-advanced radiotherapy treatments using the TomoTherapy Hi-Art System. By combining the capabilities of an integrated CT Scanner, 3-D Treatment Planning and Intensity Modulated Radiation Therapy (IMRT), TomoTherapy offers effective treatment delivery with minimal side effects.

Sherman Oaks Radiation Therapy Center is part of The US Oncology Network, which has more than 1,400 affiliated physicians with expertise in medical oncology, hematology, radiation oncology, gynecologic oncology, urology, oncology surgery and other specialties at more than 400 sites of care in 26 states, treating over 1.1 million patients annually. The Network provides strong and comprehensive practice management capabilities and value-based care expertise that are critical for practices navigating today’s challenging healthcare landscape. The Network is supported by McKesson Specialty Health, an industry leader in solutions that empower the community patient care delivery system to advance the science, technology and quality of care.

Sherman Oaks Radiation Therapy Center offers patients a compassionate team approach while ensuring access to innovative treatments with ongoing follow-up care.  This team approach focuses on partnering with our patients primary care physicians and specialists, ensuring our patients’ entire care team understands the prescribed treatment and is continuously updated on their patient’s progress.


  • Address

5522 Sepulveda Blvd
Sherman Oaks, CA 91411

  • Contact Information

P: (818) 997-1522
F: (818) 997-0705


Marc Botnick, MD - Medical Director

Dr. Botnick has extensive experience with performing permanent seed prostate implants in addition to high dose rate (HDR) brachytherapy implants for prostate, gynecologic and breast malignancies. He is one of the primary brachytherapists of Valley Radiotherapy Associates Medical Group, performing implants at several facilities in the San Fernando Valley and the Los Angeles Westside area.

Dr. Botnick received his Bachelor of Arts Degree in Biology from the University of Pennsylvania followed by a Medical Degree from the Hahnemann University School of Medicine where he graduated in the top of his class, receiving entry into the Alpha Omega Alpha society. He completed his Radiation Oncology residency training at the Memorial Sloan Kettering Cancer Center in New York where he then dedicated an entire year towards advanced brachytherapy training.

He served as chief resident for prostate, breast and gynecologic cancers. He brought his medical practice to the San Fernando Valley in 2000 and assumed the role of Medical Director of Sherman Oaks Radiation Therapy center in late 2006. Dr. Botnick has acquired extensive knowledge of Image-Guided/Intensity-Modulated Radiation Therapy (IG/IMRT) and uses the TomoTherapy Hi-Art System® to treat sites such as prostate, head and neck, and pelvic malignancies.

Undergraduate: University of Pennsylvania
Medical School: Hahnemann University School of Medicine - Philadelphia, PA
Internship: Internal Medicine, Crozer-Chester Medical Center - Upland, PA
Residency: Memorial Sloan-Kettering Cancer Center - New York, NY

Board Certification:  

• American Board of Radiology


• 1989 Cum Laude Honors - University of Pennsylvania
• 1991-92 Russell C. Fisher Scholarship - Hahnemann University School of Medicine, Philadelphia, PA
• 1992-93 N. Volney Ludwick Scholarship - Hahnemann University School of Medicine, Philadelphia, PA
• 1993-94 Marshall H. Read Scholarship - Hahnemann University School of Medicine, Philadelphia, PA
• President Alpha Omega Alpha, Zeta Chapter - Hahnemann University School of Medicine, Philadelphia, PA

Lisa Chaiken, MD

Dr. Lisa Chaiken joined Valley Radiotherapy Associates Medical Group in 2009 and is a board certified Radiation Oncologist practicing at Saint John

Dr. Chaiken received her undergraduate degree, Phi Beta Kappa and Magna cum Laude, in History and Science from Harvard University. Her studies emphasized biological sciences, medical ethics, and historical factors influencing modern medicine. After receiving her medical degree from UCLA, she continued in the Department of Radiation Oncology, where she served as Chief Resident. After leaving UCLA, she still served as clinical faculty at the UCLA Breast Center for several years.

Dr. Chaiken has been involved in many aspects of clinical treatment with special interests in breast, prostate, head and neck, and gynecologic cancer. Her work on Positron Emission Tomography (PET) imaging of radiation oncology patients with head and neck cancer received the Residents Essay Award from the American Society of Therapeutic Radiology and Oncology.

Undergraduate: Harvard University
Medical School: UCLA Medical School - Los Angeles, CA
Internship: Wadsworth VA Medical Center - Los Angeles, CA
Residency: UCLA Radiation Oncology

Board Certification:  

• American Board of Radiology


• 1984 Phi Beta Kappa, Radcliffe Chapter
• 1988 GRECC Co-Intern of the Year Award, Wadsworth Hospital
• 1989 Travel Grant, ASTRO, Washington, D.C., 1991
• 1991-1992 American Cancer Society, Clinical Fellow
• 1992 Residents Award, Southern California Radiation Oncology Society
• 1993 Resident Essay Award, ASTRO, for clinical research
• 1998-Present Best Doctors in America/Super Doctors, Los Angeles Magazine


  • 3-D Conformal
  • CT-Treatment Planning
  • High dose rate brachytherapy (HDR)
  • Image-Guided Radiation Therapy (IGRT)
  • Intensity-Modulated Radiation Therapy (IMRT)
  • Stereotactic Body Radiotherapy (SBRT)
  • Stereotactic Radiosurgery (SRS)





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