Physician Photo

Ozanan R. Meireles, MD

  • Phone: 617-643-9841
General and Gastrointestinal Surgery
Department of Surgery


  • Digestive Healthcare Center
  • Weight Center
  • Swallowing and Heartburn Center
Clinical Interests
Bariatric and Metabolic Surgery
POEM - Endoscopic Esophageal Myotomy (Achalasia)
Gastroesophageal reflux disease (GERD)
Paraesophageal hernias
Laparoscopic / Minimally invasive surgery
Upper GI endoscopy and endoluminal procedures
Natural orifice translumenal endoscopic surgery (NOTES)
Boston: Massachusetts General Hospital
Medical Education
MD, Sao Paulo State University School of Medicine - UNESP Botucatu
Residency, Michigan State University
Residency, Santa Casa de Misericordia de Sao Paulo
Fellowship, UC San Diego Medical Center
Board Certifications
Surgery, American Board of Surgery
Foreign Languages
Patient Age Group
Accepting New Patients
Accepting New Patients


View my most recent publications at PubMed

Transesophageal endoscopic myotomy (TEEM) for the treatment of achalasia: the United States human experience. Meireles OR, Horgan S, Jacobsen GR, Katagiri T, Mathew A, Sedrak M, Sandler BJ, Dotai T, Savides TJ, Majid SF, Nijhawan S, Talamini MA. Surg Endosc. 2013 May;27(5):1803-9.

Broad clinical utilization of NOTES: is it safe? Horgan S, Meireles OR, Jacobsen GR, Sandler BJ, Ferreres A, Ramamoorthy S, Savides T, Katagiri T, Dotai T, Sedrak M, Majid SF, Nijhawan S, Talamini MA. Surg Endosc. 2013 Jun;27(6):1872-80

Weight loss surgery cuts diabetes risk

The results of a Swedish study show that weight loss surgery significantly reduces the risk of type 2 diabetes in obese people.

Bariatric surgery for people with type 2 diabetes and prediabetes

Massachusetts General Hospital Weight Center surgeon Ozanan Meireles, MD, answers common questions about the effect of bariatric surgery on individuals with type 2 diabetes and prediabetes.

Bariatric surgery gives time, new life to kidney transplant patient

Thomas Gagnon arrived at Massachusetts General Hospital expecting to receive a kidney transplant. Instead, he was referred to the Mass General Weight Center for life-changing obesity treatment.

Surgery Department
15 Parkman Street
Boston, MA 02114-3117

Phone: 617-643-9841

Weight Center, MGH
50 Staniford Street
Boston, MA 02114-2517

Phone: 617-726-4400