Meet Our World-Class Oncologists in Los Angeles
With a broad range of specialties and backgrounds, our handpicked team of doctors is internationally recognized as leaders in cancer diagnosis, advanced imaging, and treatment, such as radiology. We work together to provide the highest level of care. At our clinic, you'll experience a healing and supportive environment that provides balanced and thorough cancer diagnostics and treatment options. The Beverly Hills Cancer Center is proud to provide you with a team of the best oncologists in Los Angeles, available worldwide.
Oncologists and Hematologists
Education & Medical Training
Academic Appointments
Clinical Focus & Research
Dr. Gabayan is actively involved in clinical trials and cancer research studies. He is deeply committed to exploring emerging therapies that improve cancer patients' outcomes and quality of life. His leadership has helped bring cutting-edge treatments to the community level, bridging advanced research and direct patient care.
Philosophy of Care
Known for his patient-first philosophy, Dr. Gabayan emphasizes personalized treatment strategies grounded in both scientific innovation and clinical compassion. His goal is to ensure every patient has access to the latest advances in oncology, delivered with unwavering dedication and respect.
Education & Medical Training
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B.S. in Chemistry – University of Illinois
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Medical Degree – The University of Chicago, Pritzker School of Medicine (1988)
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Residency – Internal Medicine, Northwestern Memorial Hospital (1989–1991)
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Fellowship – Hematology & Oncology, UCLA Medical Center (1991–1994)
Academic & Faculty Appointments
Following her fellowship, Dr. Chap joined the faculty at the David Geffen School of Medicine at UCLA, where she was appointed Associate Clinical Professor of Medical Oncology. During her tenure, she also served as Co-Director of the UCLA/Revlon Multidisciplinary Breast Clinic, helping shape multidisciplinary approaches to breast cancer care.
Clinical Focus & Expertise
Dr. Chap is passionate about applying the latest scientific discoveries to patient care and has been at the forefront of incorporating novel therapies and precision medicine into women’s oncology.
Board Certifications
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Internal Medicine
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Hematology
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Medical Oncology
Awards & Honors
Dr. Chap’s exceptional contributions to medicine have been recognized through numerous prestigious honors, including:
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Exceptional Women in Medicine: 2019, 2020, 2021, 2022, 2023
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America’s Top Doctors (Castle Connolly, print & digital): 2nd–14th Editions
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America’s Top Doctors for Cancer (Castle Connolly, print & digital): 1st–10th Editions
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Castle Connolly Digital Guides: 2016–2021
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Modern Luxury Los Angeles: 2022
Research & Program Development
With a strong background in clinical research and oncology program development, Dr. Castro is widely regarded as a leading industry resource in molecular diagnostics. His work is centered on constructing a comprehensive molecular diagnosis for each patient, identifying the operative biological pathways and engineering strategies to disarm the malignant phenotype.
Philosophy of Care
Dr. Castro’s mission is to achieve an engineering-level understanding of cancer pathogenesis on a per-patient basis. By decoding the biological mechanisms driving tumor behavior, he aims to neutralize treatment resistance and guide highly specific, effective therapeutic interventions.
Professional Highlights
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Board certified in Radiation Oncology
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Named one of the region’s “Top Doctors” for seven consecutive years (2018–2024)
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Combines deep medical expertise with a personalized, patient-centered care philosophy
Clinical Focus
Dr. Gabayan is deeply committed to providing his patients with state-of-the-art cancer treatment grounded in scientific rigor and delivered with compassion. His clinical leadership ensures the integration of the latest advances in radiation oncology into daily patient care.
Research & Clinical Impact
Dr. Bouzaglou has been actively involved in National Cancer Institute (NCI)-sponsored research through collaborations with SWOG, RTOG, and NSABP for over 15 years. He also served as the initial Principal Investigator for the Community Clinical Oncology Program (CCOP).
In collaboration with Dr. Peter Dyck, he has treated over 250 brain lesions using Iridium-192, achieving a doubling of survival rates in patients with Glioblastoma Multiforme.
Publications & Contributions
He has authored numerous peer-reviewed articles and contributed to textbooks in radiation oncology, advancing clinical understanding and best practices in the field.
Mission & Philosophy
Dr. Bouzaglou is dedicated to developing a “Center of Excellence” focused on enhancing treatment outcomes for brain and prostate cancers. He is recognized for delivering high-quality, compassionate care that ensures continuity and addresses the broader health concerns of his patients.
Current Role
Dr. Bouzaglou is a leading member of the Beverly Hills Cancer Center, where he brings his extensive expertise and commitment to excellence in Radiation Medicine, making a significant impact on the lives of his patients.