Nicholas A Tritos MD DSc, MMSc

Pituitary Disorders & Neuroendocrinology

Professor of Clinical Medicine, Massachusetts General Hospital and Harvard Medical School

Mass General Hospital, Neuroendocrine Unit100 Blossom Street, Cox 1, Suite 140Boston, MA 02114
Phone+1 617-726-7948
Fax+1 617-726-1241

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Summary

Dr. Nicholas Tritos is an endocrinologist in Boston, MA and is affiliated with Massachusetts General Hospital. He received his medical degree from University of Athens and has been in practice 31 years. He specializes in pituitary disorders & neuroendocrinology and is experienced in autoimmune hypophysitis, hyperprolactinemia, acromegaly, growth hormone deficiency, and pituitary masses.

Education & Training

Harvard Medical SchoolMMSc, Medical Science, 2001 - 2003
Beth Israel Deaconess Medical CenterFellowship, Endocrinology, Diabetes, and Metabolism, 1996 - 1999
Lahey ClinicFellowship, Endocrinology, Diabetes, and Metabolism, 1995 - 1996
Beth Israel Deaconess Medical CenterResidency, Internal Medicine, 1992 - 1995
University of AthensClass of 1989, MD

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Certifications & Licensure

NH State Medical License 1997 - Present
MA State Medical License 1995 - 2028
American Board of Internal Medicine Internal Medicine
American Board of Internal Medicine Endocrinology, Diabetes and Metabolism

Awards, Honors, & Recognition

Fellow American College of Physicians
CMS Meaningful Use Stage 2 Certification EpicCare Inpatient 2014 Certified EHR Suite, Epic Systems Corporation, 2014, 2016-2017
CMS Meaningful Use Stage 1 Certification Longitudinal Medical Record, Partners Healthcare System, 2014, 2016-2017

Publications & Presentations

PubMed

Hyperprolactinaemia masked by the hook effect in a patient with a giant prolactinoma with growth hormone co-secretion.
Ghazal Daftari, Risa Waki, Deborah A Forst, Pamela S Jones, Nicholas Tritos
BMJ Case Reports. 2026-07-13
Developments in Pharmacotherapy for Acromegaly: Current and Emerging Approaches.
Nicholas A Tritos, Beverly M K Biller
Drugs. 2026-06-01
Cognitive function, quality of life, and survival outcomes in patients with lower grade gliomas treated with proton radiation therapy: A phase II study.
Jason M Slater, Nora K Horick, Lisa B Nachtigall, Michael W Parsons, Nicholas A Tritos
Neuro-Oncology. 2026-05-01

Journal Articles

Cushing's Disease in Older Patients: Presentation and Outcome
Nicholas A Tritos, Brooke Swearingen, Clinical Endocrinology
Effects of Growth Hormone Therapy on Bone Density and Fracture Risk in Age-Related Osteoporosis in the Absence of Growth Hormone Deficiency: A Systematic Review and Me...
Anne Klibanski, Nicholas A Tritos, Endocrine

Press Mentions

Experts Offer Recommendations for Management of Pituitary TumorsAugust 10th, 2021

Grant Support

Structure and Function of Striatal Neuromodulatory DynamicsNEW YORK UNIVERSITY SCHOOL OF MEDICINE2024–2029
Circuit Mechanisms of Bradykinesia in Mouse Models of Parkinson’s DiseaseNEW YORK UNIVERSITY SCHOOL OF MEDICINE2024–2026
Circuit Mechanisms of Bradykinesia in Mouse Models of Parkinson’s DiseaseNEW YORK UNIVERSITY SCHOOL OF MEDICINE2024–2026