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Antonia Elizabeth Stephen, MD


Accepting New Patients



Surgical Oncology


Centers & Specialties

MassGeneral Hospital for Children

Clinical Interests
  • Thyroid surgery
  • Parathyroid surgery
  • Thryoid cancer
  • Hyperparathyroidism
  • Graves' disease
  • Adrenal tumors
Medical Education
  • MD, Harvard Medical School
  • Residency, Massachusetts General Hospital
  • Fellowship, Cleveland Clinic Foundation
Board Certifications
  • Surgery
  • Boston: Massachusetts General Hospital
  • Newton: Newton-Wellesley Hospital
  • Waltham: Mass General West
Insurances Accepted
  • Aetna Health Inc.
  • Beech Street
  • Blue Cross Blue Shield - Blue Care 65
  • Blue Cross Blue Shield - Indemnity
  • Blue Cross Blue Shield - Managed Care
  • Blue Cross Blue Shield - Partners Plus
  • Centene/Celticare
  • Cigna (PAL #'s)
  • Fallon Community HealthCare
  • Great-West Healthcare (formally One Health Plan)
  • Harvard Pilgrim Health Plan - ACD
  • Harvard Pilgrim Health Plan - PBO
  • Health Care Value Management (HCVM)
  • Humana/Choice Care PPO
  • Medicaid
  • Medicare
  • Medicare - ACD
  • Neighborhood Health Plan - ACD
  • Neighborhood Health Plan - PBO
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • Private Health Care Systems (PHCS)
  • Senior Whole Health
  • TriCare
  • Tufts Health Plan
  • Unicare
  • United Healthcare (non-HMO) - ACD
  • United Healthcare (non-HMO) - PBO
Patient Age Group
Adult and Pediatric

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Dr Antonia Stephen received her medical degree from Harvard Medical School and subsequently completed her general surgical residency at the Massachusetts General Hospital and an endocrine surgical fellowship at the Cleveland Clinic. She then joined the surgical staff at the Massachusetts General Hospital in the Division of Surgical Oncology. Her clinical practice is focused on the surgical management of patients with endocrine tumors and she is a member of the MGH Endocrine Surgery Unit, the highest volume center in the country focused on surgery of the thyroid, parathyroid, and adrenal glands. Her particular areas of clinical expertise are in minimally-invasive parathyroid surgery, the treatment of thyroid cancer, and laparoscopic adrenal surgery. She also performs in-office ultrasound and ultrasound-guided biopsies of thyroid nodules and parathyroid tumors.

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Research & Publications

Research Summary
Dr. Stephen's research interests are focused on thyroid and parathyroid tumors. Her primary areas of investigation include the diagnosis of thyroid nodules, specifically the pre-operative differentiation of malignant and benign thyroid tumors. She has conducted original research on the topic of parathyroid localization with sestamibi/parathyroid scanning and four-dimensional computed tomography. She also manages the endocrine surgical database, a hospital-wide program that is utilized in clinical research studies

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Surgical Oncology Associates
55 Fruit Street
Boston MA, 02114-2696
Phone: 617-726-0531
Fax: 617-724-3895
Mass General West
52 Second Avenue
Waltham MA, 02451
Phone: 781-487-6100
Fax: 781-487-6201

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