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St. Joseph Hospital endocrinologists offer comprehensive and integrated care in order to evaluate and treat patients with endocrine and metabolic disorders. 

The St. Joseph Hospital Endocrinology practice specializes in the diagnoses and treatment of complex thyroid disorders and thyroid cancer as well as other endocrine and metabolism disorders.

What is the Endocrine System?

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

The body's endocrine system includes the pancreas, the thyroid, parathyroid, pineal, hypothalamus, adrenal and pituitary glands, and the ovaries and testes. It also involves many other organs which respond to, modify, or metabolize hormones.

Meet our Team of Specialists

St. Joseph Hospital Endocrinology Practice Providers:
Elizabeth Spatola, MD

Dr. Elizabeth Spatola received her medical degree from the State University of New York (SUNY) at Buffalo School of Medicine. She completed her residency at State University of New York at Stony Brook, NY. Dr. Spatola completed her fellowship in Endocrinology and Metabolism at the State University of New York (SUNY) at Stony Brook. 

Robert Levine, MD, FACE
Dr. Robert Levine received his medical degree from the University of Connecticut, School of Medicine in Farmington, CT.  He completed his residency in Internal Medicine at Mount Auburn Hospital in Cambridge, MA, and completed an Endocrine Fellowship at Yale University School of Medicine, New Haven, CT. Additionally, Dr. Levine had teaching appointments at the Medical College of Pennsylvania and he is currently an Adjunct Professor of Endocrinology at Dartmouth Medical School. He is board-certified in Internal Medicine, Endocrinology, Diabetes and Metabolism. Dr. Levine was most recently recognized by Newsweek magazine, earning national distinction as a top cancer doctor for 2015 specializing in thyroid disorders and thyroid cancer. He has been director of the thyroid ultrasound course for the American Association of Clinical Endocrinologists and also a frequent national and international lecturer regarding thyroid ultrasound and thyroid cancer.

Margaret Flynn, MD 
Dr. Margaret Flynn received her medical degree from Dartmouth Medical School in Hanover, NH. She completed an internship and residency in Internal Medicine a Beth Israel Deaconess Hospital in Boston, MA. Completing her Fellowship in Endocrinology at Tufts-New England Medical Center in Boston, MA. Dr. Flynn is board-certified in Internal Medicine and Endocrinology & Metabolism.

Mikhail Signalov, DO

St. Joseph Hospital Endocrinology is pleased to announce Mikghail Signalov, DO – Doctor of Osteopathic Medicine, FACE – Fellow of the Fellow of American College of Endocrinology and FACOI – Fellow of the American College of Osteopathic Internists has joined its practice.

Dr. Signalov earned his Doctor of Osteopathic Medicine degree from Lake Erie College of Osteopathic Medicine in Eric, Pa. He completed both an internship and residency at St. Luke’s University Hospital in Bethlehem, PA and a fellowship at Mount Clemens Regional Medical Center in Mount Clemens, Mich. His clinical interests included thyroid, adrenal gland and pituitary diseases as well as thyroid oncology and osteoporosis.

Shellie Hafer, APRN
Ms. Hafer received her Master's in Nursing, Nurse Practitioner Program from Duke University in Durham, NC. She is an Acute Care Nurse Practitioner certified by the American Nurses Credentialing Center and also hold an Advanced Diabetes Management Certification. Her clinical interests include; Thyroid Disease, Diabetes Management, Parathyroid Disorders, Osteoporosis, Hypogonadism, and Pituitary Disorders.