About Sebastian Unizony, MD

Departments, Centers, & Programs:

Clinical Interests:




Rheumatology Associates
55 Fruit Street
Boston, MA 02114-2696
Phone: 617-726-7938
Fax: 617-643-1274

Medical Education

  • MD, Universidad Nacional de La Plata
  • Residency, Hospital Carlos Durand
  • Residency, St. Luke's Roosevelt Hospital Center
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Rheumatology, American Board of Internal Medicine
  • Rheumatology, American Board of Internal Medicine

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


  • View my most recent publications at PubMed


    1. Unizony S, Lu N, Tomasson G et al. Temporal trends of venous thromboembolism risk before and after diagnosis of giant cell arteritis. Arthritis Rheumatol. 2017
    2. Miyabe C,  Miyabe Y, Strle K, Kim ND, Stone JH, Luster AD and Unizony S. An expanded population of pathogenic regulatory T cells in giant cell arteritis is abrogated by IL-6 blockade therapy.  Ann Rheum Dis. 2016
    3. Unizony S, Villarreal M, Miloslavsky EM et al. Clinical outcomes of treatment of anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis based on ANCA type. Ann Rheum Dis. 2016
    4. Unizony S, Kim ND, Hoang MP. Case Records of the Mass General Hospital. Case 7-2015: A 25-year-old man with oral ulcers, rash, and odynophagia. N Engl J Med. 2015
    5. Unizony S, Menendez ME, Rastalsky N, et al. Inpatient complications in patients with giant cell arteritis: decreased mortality and increased risk of thromboembolism, delirium and adrenal insufficiency. Rheumatology (Oxford). 2015
    6. Unizony S, Lim N, Phippard DJ, et al. Peripheral CD5+ B Cells in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis. Arthritis Rheumatol. 2015
    7. Miloslavsky EM, Stone JH, Unizony S. Challenging mimickers of primary systemic vasculitis. Rheum Dis Clin North Am. 2015
    8. Unizony S, Dasgupta B, Fisheleva E, et al. Design of the tocilizumab in giant cell arteritis trial. Int J Rheumatol. 2013