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.


Dr. Rha
Dr. Rha practices as part of Beverly Oncology and Imaging, where she has continued working since 1993, and regularly visits patients in the Monterrey Park and Montebello offices. Dr. Rha has acquired many medical skills while on staff at BOI. She specializes in LDR and HDR Brachytherapy, IMRT, 3D conformal radiotherapy and Radionuclide therapy. Prior to entering medical school she was a Registered Nurse in Intensive care on the pediatric floor, the Medical Surgical Unit and she also worked as a nursing instructor at the School of Nursing in Korea.

Dr. Janice Rha began her undergraduate studies in the science of nursing at Seoul National University of Korea. To begin her certification in medicine she studied three years at California State University in Northridge, California. From there she attended Washington University School of Medicine in St. Louis Missouri and completed her internship in internal medicine at St. Louis University Medical Center. After another five years she fulfilled her residency in Radiation Oncology at LAC-USC Medical Center, in Los Angeles California. She has received certification from the American Board of Radiology and the National Board of Medical Examination.

Dr. Rha has received hospital appointments at Beverly Hospital in Montebello California, King/Drew Medical Center in Los Angeles California, Garfield Medical Center, Memorial Hospital of Gardena, and Temple Community Hospital, also In Los Angeles California. She also received Academic appointment from King/Drew Medical Center in Los Angeles, as a clinical instructor. She participates as a member of the American Society of Therapeutic Radiology and Oncology (ASTRO) Dr. Rha also serves on the Board of Directors for Seoul National Alumni Association of Southern California and is a member of the Korean Medical Association of Southern California.

Dr. Au
In March 1965, Dr. Au completed his medical schooling at the National Defense Center of the Republic of China in Taipei, Taiwan. After his arrival to the United States, he completed his internship at Mercy Hospital in Pittsburgh PA and his residency at Youngstown Hospital Association in General Radiology. In 1968 he completed a second residency at Memorial Sloan-Kettering Cancer Center and in 1970, accepted fellowship at Nassau County Medical Center.

Dr. Au possesses extensive experience having been appointed Assistant Professor of the New York State University’s School of Medicine and holding over 30 years experience in four different medical affiliations. His experience includes being the Attending Radiation Oncologist at Nassau County Medical Center for 5 years, the Chief Radiation Oncologist at The Cooley Dickinson Hospital in Massachusetts for 10 years and a radiation oncologist at the Wilshire Oncology Medical group since 1986. Adding to his skill, in 2001 Dr. Au became a physician in association with Beverly Oncology and Imaging and presently treats patients in Monterey Park CA at both Beverly Oncology and Imaging and the Wilshire Oncology Medical Group.

Dr. Au is a great asset to our company as he is a member of The American College of Radiology, The Los Angeles Radiological Society, The California Radiological Society, The American Society for Therapeutic Radiology and Oncology, the Los Angeles County Medical Association, and The American Medical Association. In addition, he has completed state boards in California, District of Columbia, Maine, Massachusetts, and New York. He holds Certification from the Educational Council for Foreign Medical Graduate and the American Board of Radiology in therapeutic Radiology, which he received in 1964 and 1971 respectively



Dr. Chuang
Dr Chuang attended the Paulista School of medicine in Sao Paulo Brazil and obtained his research fellow from Memorial Sloan Kettering Cancer Center in New York. It was in New York where he also completed his internship and residency in Radiation Oncology at Methodist Hospital. He completed another residency at Beth Israel Medical Center while in New York as well where he later became the chief of Residency.

Dr. Chuang is very active at BOI and mainly services patients in the Monterey Park Office on Garfield Avenue and at the clinic in Montebello on Beverly Blvd. He also treats patients in Arcadia on Huntington Drive. Dr. Chuang maintains nationality from both Taiwan and Brazil and speaks both Chinese and Portuguese. He holds membership in the American Society of Clinical Oncology and the American Society for Therapeutic Radiology and Oncology.

Dr. Chuang has earned medical licenses in the states of California, New Jersey, and New York and carries a DEA, ECFMG, and FLEX licensure. He has obtained privileges at Garfield Medical Center, Methodist Hospital, Alhambra Hospital, Beverly Hospital, and San Gabriel Medical Center.

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