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.
Medical Director, Beverly Hills Cancer Center
Board-Certified in Hematology & Oncology
Leading Oncologist and Clinical Researcher in Los Angeles
Dr. Afshin Eli Gabayan, known professionally as A. Eli Gabayan, M.D., is a highly respected hematologist and medical oncologist with a longstanding commitment to delivering the most effective, evidence-based therapies for cancer patients. As Medical Director of the Beverly Hills Cancer Center, Dr. Gabayan is pivotal in driving the center’s mission to offer comprehensive, compassionate, and innovative care.
Medical Degree – University of Southern California (USC) School of Medicine
Recognized for academic excellence and early interest in translational oncology
Former Assistant Clinical Professor – David Geffen School of Medicine at UCLA
Contributed to academic instruction, mentorship, and program development in oncology
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.
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.
Director of Breast Cancer and Women’s Oncology
Board-Certified in Internal Medicine, Hematology, and Medical Oncology
Recognized Among “America’s Top Doctors for Cancer”
Dr. Linnea I. Chap is a distinguished medical oncologist specializing in breast cancer and gynecologic malignancies. As the Director of Breast Cancer and Women’s Oncology, she is a recognized leader in her field, dedicated to advancing the care of women with complex oncologic conditions. Her expertise is rooted in both clinical excellence and academic leadership, and she is repeatedly honored as one of the nation’s top cancer specialists.
B.S. in Chemistry – University of Illinois
Graduated Summa Cum Laude with High Honors
Medical Degree – The University of Chicago, Pritzker School of Medicine (1988)
Residency – Internal Medicine, Northwestern Memorial Hospital (1989–1991)
Fellowship – Hematology & Oncology, UCLA Medical Center (1991–1994)
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.
Breast Cancer
Gynecologic Cancers
Clinical Trials & Translational Research
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.
Internal Medicine
Hematology
Medical Oncology
Dr. Chap’s exceptional contributions to medicine have been recognized through numerous prestigious honors, including:
Exceptional Women in Medicine: 2019, 2020, 2021, 2022, 2023
America’s Top Doctors (Castle Connolly, print & digital): 2nd–14th Editions
America’s Top Doctors for Cancer (Castle Connolly, print & digital): 1st–10th Editions
Castle Connolly Digital Guides: 2016–2021
Modern Luxury Los Angeles: 2022
Neuro-Oncologist | Medical Oncologist | Expert in Molecular Oncology & Precision Medicine
Dr. Michael Castro is a highly respected neuro-oncologist and medical oncologist with board certifications in medical hematology and internal medicine. He is renowned for his work in molecular oncology, precision medicine, and immunotherapy, bringing a deeply personalized approach to cancer treatment.
Dr. Castro specializes in the integration of molecular profiling and mechanism-based treatment strategies to combat cancer. His approach emphasizes precision targeting of the biological processes that drive each individual’s disease, enabling more effective, personalized therapies—especially for treatment-resistant cancers.
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.
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.
Medical Director of Radiation Oncology | Board-Certified Radiation Oncologist
Recognized as a “Top Doctor” (2018–2024)
Dr. Arash "Ari" Gabayan is a board-certified radiation oncologist and the Medical Director of Radiation Oncology at Beverly Hills Cancer Center. He is known for his compassionate approach to patient care and his ongoing commitment to advancing the field through cutting-edge clinical research.
Undergraduate – University of California, Los Angeles (UCLA)
Major: Neuroscience
Graduated Summa Cum Laude with College Honors
Recipient of multiple academic honors, including the University of California Regents Scholarship
Medical School – David Geffen School of Medicine, UCLA
Internship – University of California, San Francisco (UCSF)
Residency – University of Arizona, Department of Radiation Oncology
Served as Chief Resident
Board certified in Radiation Oncology
Named one of the region’s “Top Doctors” for seven consecutive years (2018–2024)
Combines deep medical expertise with a personalized, patient-centered care philosophy
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.
Board-Certified Radiation Oncologist | Fellow, American College of Radiology
Dr. Armand Bouzaglou is a highly accomplished, board-certified radiation oncologist with a specialty focus on brain and prostate tumors and high-dose rate (HDR) implants. He has over 15 years of experience in these areas and is deeply committed to advancing cancer care through both clinical excellence and research innovation.
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.
He has authored numerous peer-reviewed articles and contributed to textbooks in radiation oncology, advancing clinical understanding and best practices in the field.
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.
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.
Medical Oncologist and Hematologist
Board Certified in Hematology, Medical Oncology, Internal Medicine (Recertified in
2013 and 2023)
Dr. Howard Yeh is a board-certified medical oncologist and hematologist with over 20 years of experience in clinical oncology, research, and leadership. His career reflects a lifelong commitment to delivering personalized, compassionate cancer care, while advancing innovative therapies through cutting-edge clinical research.
Trained at the University of Texas, Houston, and MD Anderson Cancer Center, Dr. Yeh has cultivated a patient-centered approach, enriched by a career spanning academic medicine, biopharmaceutical leadership, and private practice. In his prior roles at Amgen, Johnson & Johnson, and Labcorp, Dr. Yeh held key leadership positions where he spearheaded clinical development programs and collaborated across multidisciplinary teams to bring transformative cancer therapies from bench to bedside.
Before joining Beverly Hills Cancer Center, Dr. Yeh served as Medical Director and full-time oncologist/hematologist at The Oncology Institute of Hope and Innovation, where he led initiatives to streamline clinical operations, enhance patient satisfaction, and integrate clinical research into everyday practice.
Dr. Yeh has played pivotal roles in the development of breakthrough therapies, including landmark clinical trials that led to FDA approvals of Darzalex, Zytiga, and XGEVA. His expertise spans hematologic malignancies and advanced solid tumors, with a particular passion for translating scientific innovation into real-world treatments that improve patient outcomes.
Fluent in Mandarin and Taiwanese, Dr. Yeh is dedicated to delivering culturally sensitive care to diverse patient populations, ensuring that every individual receives care that honors their unique background and needs.
At Beverly Hills Cancer Center, Dr. Yeh brings a dynamic blend of clinical expertise and industry leadership to deliver world-class, research-driven cancer care in a community-focused setting. His vision is to bridge the gap between scientific discovery and compassionate care, providing every patient with access to the latest advancements in oncology.
To schedule an appointment, please call Beverly Hills Cancer Center in Beverly Hills, California at (877) 320-5131 or Click the link below to access our Online Appointment Request
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