Endocrine Tumor and Bone Disease Program

At Providence Saint John’s Health Center, the Endocrine tumor and Bone Disease Program offers comprehensive, personalized care to patients with endocrine conditions including thyroid cancer and nodules; hyperthryroidism; including Graves’ disease; multinodular goiter; hyperparathyroidism; pheochromocytoma; Cushing’s and Conn’s syndrome; neuroendocrine tumors including paragangliomas; hereditary endocrine tumor syndromes; and bone disease including osteoporosis; breast or prostate cancer bone metastases; Paget’s bone disease; fibrous dysplasia; or menopause.

Lead by physician-scientists

Our program is led by two fellowship-trained endocrine physicians who are advancing patient care through their research and work as faculty members of the John Wayne Cancer Institute.

  • Melanie Goldfarb, M.D., MS, FACS, is an endocrine surgeon and program director of the endocrine tumor program, a clinician who provides highly-specialized surgical care to patients with tumors or cancer related to thyroid, parathyroid and adrenal disorders through outpatient care, surgical services and clinical research.
  • Frederick Singer, M.D., is an endocrinologist, and the Providence Saint John’s program director of the bone program and past chairman of the board of directors of the Paget Foundation, in addition to being past president of the American Society for Bone and Mineral Research.

The Endocrine Tumor Program provides the following minimal access surgery services and specialized diagnostic evaluation


Specific conditions treated for bone disease include:


At the John Wayne Cancer Clinic at Providence Saint John’s Health Center you’ll receive the highest level of care in a calm, tranquil environment designed with healing in mind. Our physicians and programs are recognized locally, nationally and internationally and provide for the evaluation, diagnosis and treatment of all patients.

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