BOI is pleased to introduce our highly qualified roster of Radiation Oncology Physicians. Each one is Board Certified; California licensed, and has passed BOI's rigorous accreditation standards. At BOI there are two groups of Doctors who are treating patients in our facilities. One group, including Dr. Ree, Dr. Rha, and Dr. Thropay, are on staff physicians and are employed by BOI. The second group, including Dr, Au, Dr. Chuang, and Dr. Rose, are independent practitioners and although they treat in BOI facilities, they are not employed by BOI as they maintain their independence. This is a technical division of our doctors however when it comes to quality of care there is no difference between the two groups.

All of our affiliated doctors are of the highest quality. As you read through the Biographies You will notice our multi-national composition and the fact that several have published scientific works. Each one of our Medical Staff stays current with new developments in the field of Radiation Oncology and collaborates with our Research department (CTRA). Most are also active in their community and church activities.


Dr. Thropay - Medical Director
Dr. Thropay graduated From the University of California Los Angles (UCLA) with a Bachelors of Science in Chemistry in 1971. He received his fellowship from UCLA in both radiation therapy and bladder cancer research. In 1975 he graduated with his degree in Medicine from UCLA. After graduation he completed his internship and residency at USC/LAC medical Center and received his California Medical Licensure in July of 1976. The American Board of Radiology then certified him three years later in June of 1979.

Since then, Dr. Thropay founded Beverly Oncology and Imaging where he has maintained his practice for over 25 years. The About Us section of the website explains more about Dr. Thropay and the founding of his company. You can read his executive BIO as well. Dr. Thropay also founded Clinical Trials and Research Associates (CTRA) in 1999. Please visit our Research section of this website to learn more about this company and research studies BOI and Dr. Thropay are a part of.

Dr. Thropay, in 1981, presented at the Annual Meeting of American Society of Therapeutic Radiologists and Oncologists “Interstitial Implants of T3 and T4 lesions of the Breast, Early Results” along with Dr. Syed, Dr. Fleming and Dr. George, and Dr. Puthalawa. He was a speaker at the Continuing Education Session for Nuclear Medicine Technologists, Physicians and Scientists: “Nuclear Medicine (Radiolabeled Antibodies) in the Evaluation and Therapy of Lymphomas.” He has also addressed more than 100 private and public forums ranging from exclusive meetings of professional associations and churches for the purpose of continuing medical education seminars. Dr. Thropay has appeared on numerous television, radio, and Print media to further the same goal of continuing education and cancer awareness into our communities.

Dr. Thropay was appointed Assistant Clinical Professor of Radiation Medicine at the USC school of Medicine in 1993. Prior to that appointment he held the position of Instructor of Radiation Therapy for Family Practitioners in the years of 1984 through 1988. Dr. Thropay holds tumor board and committee membership at Alhambra Community Hospital, Beverly Hospital, Coast Plaza Doctor’s Hospital, Downey Community Hospital, East Los Angeles Hospital, Hollywood Community Hospital, Los Angeles Community Hospital, Los Angeles Metropolitan Hospital, Midway Hospital, Monterey Park Hospital, Queen of Angels/Hollywood Presbyterian Hospital. He also maintains membership in the American college of Radiation Oncology, the American Medical Association, the American Society for Therapeutic Radiology and Oncology, the Asociación de Médicos Hispanos de California, the California Medical Association, the High Dose Rate Brachytherapy Working Group, the Latin Business Association, the Los Angeles Medical Association, and the Los Angles Radiological Association. Dr. Thropay’s experience, expertise, and love for his work make BOI a standout treatment facility.
Read more about Dr. Thropay


Dr. Ree
Dr. Ree’s professional career began in Downey California. There he maintained a private practice radiation treatment clinic for over 20 years. Before setting up his medical practice, he worked in Bakersfield and Fresno while awaiting completion of his office. Presently he is beginning his stay at Beverly Oncology and Imaging and will be expanding to other BOI locations in addition to Downey taking full advantage of his medical expertise, Spanish language skill, and enthusiasm for radiation therapy.

Dr. Ree Received his certification from the American Board of Radiology in Therapeutic Radiology on December 14, 1978 after completing school at the University of Chicago’s Pritzker School of Medicine where he was awarded the Nels Stanford Prize for graduating senior medical student demonstrating best work in radiology. While there he studied for several months under Dr. Melvin Greim in the radiation department after which he studied under Dr. Joseph Castro in Radiation Therapy for another four months while completing his internship at Mt. Zion Hospital in San Francisco, California. Dr. Ree completed fellowship in Radiation Oncology at Stanford University Hospital where he was the Chief Resident from July to September in 1977 which is also the year he received his second honor from the American Cancer Society just one year after being awarded by the National Institute of Health.

Dr. Ree has established himself as a credible professional throughout his career and through his publications. Dr. Ree was published on three separate occasions. His first article, titled “Long Extension of Effective CS-US Interval by Anesthesia between CS-US” was published July 1972 in the Journal of Comparative and Physiological Psychology. The second was his article called “Factors Influencing Local Recurrence of after-Abdominal-Perineal Resection for Cancer of the Rectum and Rectosigmoid” which was published in the British Journal of Surgery in 1975. In the same year he published, “Rectal and Rectosigmoid Carcinoma: Physician’s Prediction of Local Recurrence” in the Journal of Surgical Research.

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