Endocrinology
Graham McMahon, M.D., M.M.SC.
Adjunct Professor of Medicine and Medical Education, Northwestern University; CEO, Accreditation Council for Continuing Medical Education
Dr. Graham T. McMahon, MD, MMSc, is an endocrinologist specializing in diabetes, lipid metabolism, and obesity, with a focus on trans and gender diverse health. He practices at Howard Brown Health in Chicago, providing care for transgender and gender-diverse patients, addressing conditions such as diabetes mellitus, dyslipidemia, obesity-related metabolic disorders, and hormone therapy needs in gender-affirming care. Previously, he served as an endocrinologist in the Division of Endocrinology, D
25+
Years in Practice
Credentials
Board Certifications
- Endocrinology, Diabetes and Metabolism (ABIM)
- Internal Medicine (ABIM)
Education & Training
- Royal College of Surgeons in Ireland — M.D.
- National University of Ireland — Doctoral degree in medical education
- Harvard Medical School — M.M.Sc. in Clinical Research
Peer Recognition
- Castle Connolly — Top Doctor
2025-2026 (2 years)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Howard Brown Health
- Northwestern Memorial Hospital
Languages
English
Experience
25+ years in practice