Center for Endocrine Tumors and Disorders

The Center for Endocrine Tumors and Disorders offers comprehensive, personalized care to patients (older children, adolescents, and adults) with endocrine conditions including thyroid cancer and nodules, hyperparathyroidism, osteoporosis and other bone disorders, adrenal tumors, PCOS, and transgender medicine.

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endocrine doctors Thyroid gland Dr. Melanie Goldfarb performs ultrasound imaging for thyroid nodules Human parathyroid gland anatomy illustration two surgeons in an operating room Male anatomy of human organs in x-ray view

Personalized Care for Endocrine Tumors and Disorders

Endocrine Tumors and Disorders Center, located in Santa Monica, CA is a comprehensive, multidisciplinary clinic for patients (older, younger, adolescents and adults) with endocrine conditions. Watch our video to learn about the Endocrine Tumors and Disorders center approach to care for patients with diabetes, thyroid disease, thyroid cancer, adrenal masses, adrenal cancer and other endocrine conditions.

Dr. Melanie Goldfarb, Dr. Sarah Rettinger, and Dr. Frederick Singer describe their multidisciplinary approach to thyroid and endocrine care.

Thyroid Nodule Clinic

A ‘one-stop shop’ multidisciplinary, comprehensive clinic that provides thorough, accurate, efficient same day evaluations of patients referred for thyroid nodules, including ultrasound and guided fine needle biopsy with on-site pathology and molecular analysis if indicated. Our goal is to best determine if a nodule is benign or malignant, using the safest and most advanced diagnostic services available, and provide each patient with a personal risk assessment and determine an individual care plan.

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Parathyroid Center of Excellence

Multidisciplinary, comprehensive clinic focused on parathyroid disease offering same day evaluation and treatment planning, including a clinic ultrasound and state-of-the-art 3-D parathyroid imaging for functional and anatomic assessment of abnormal parathyroid glands.


Learn more about minimally invasive parathyroid surgery for hyperparathroidism
two surgeons in an operating room

New Procedure: Thyroid Radiofrequency Ablation (RFA)

Thyroid nodules, even when benign (non-cancerous), can grow large and cause swallowing or breathing difficulties, persistent cough, or cosmetic concerns. Our center provides a new non-invasive option to treat these benign thyroid nodules. Radiofrequency Ablation, also known as RFA, is a non-surgical, outpatient treatment, guided by ultrasound imaging to precisely deliver radiofrequency waves to the targeted tissue. Patients can resume normal daily activity almost immediately after. Learn more about the benefits of this novel procedure.

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Thyroid Radiofrequency Ablation - Saint Johns Cancer Institute

Meet Our Team

Our highly published and nationally recognized fellowship-trained endocrine surgeon along with our team of two expert endocrinologists (including a world-recognized leader in parathyroid and bone disease) provide top-notch, personalized care for all endocrine tumors, cancers, and disorders.

Thyroid & Endocrine Experts Answer the Questions Patients are Asking

Listen to Dr. Melanie Goldfarb, Director of the Center for Endocrine Tumors and Disorders, and Professor of Surgery, along with Rose Lin, MD, and Sarah Rettinger, MD, Endocrinologists, reveal common practices and the more nuanced scenarios when it comes to thyroid treatment.


Dr. Goldfarb is an incredibly talented endocrine surgeon. Her calming temperament, coupled with her understated confidence, made me comfortable throughout my appointment.

Endocrine patient

Dr. Singer is experience, knowledgeable, and friendly. I have had a series of nine Endocrine/Bone density tests. Instead of making me come back in to discuss the results, he called the next day with the details of my tests and their implications.

Endocrine patient

Dr. Melanie Goldfarb eased my anxiety from start to finish, as I dealt with learning I had Thyroid cancer. Her deliberate calmness and complete confidence made me trust her as my dedicated doctor and surgeon.

Endocrine patient

Dr. Rettinger is by far the most competent, caring and thorough physician I have ever encountered. I simply cannot praise her highly enough. Dr. Rettinger listened with compassion, made a treatment plan together with me, and then patiently answered questions.

Endocrine patient