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Michael Irwig, MD

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Michael Irwig MD Michael Irwig MD



  • Professor of Medicine | Director of Andrology
Medical Biography
Clinical Interests
  • Andrology (Testosterone, Erectile Dysfunction)
  • Adrenal Masses
  • Pituitary Tumor
  • Osteoporosis
  • Hyperthyroidism
  • Transgender Care
  • Medical School
    • Cornell University Medical College
  • Residency
    • University of Virginia
  • Fellowship
    • Endocrinology, Metabolism & Nutrition at the University of Washington
Board Certified
  • Endocrinology
  • Diabetes and Metabolism

Michael S. Irwig, MD, F.A.C.E., is board-certified in Endocrinology & Metabolism and is a professor of Medicine at The George Washington University School of Medicine & Health Sciences. He also is an adjunct associate professor of Medicine at Georgetown University School of Medicine

Dr. Irwig is a general endocrinologist with a particular interest and expertise in androgens and transgender care. His research has focused on men with persistent sexual and non-sexual side effects of finasteride (Propecia), transgender health and men with borderline testosterone levels. He has over 30 peer-reviewed publications appearing in multiple journals including Current Opinion in Endocrinology, Diabetes and Obesity, Diabetic Medicine, Endocrine Practice, JAMA Dermatology, Journal of Clinical Endocrinology and Metabolism, Journal of Clinical Psychiatry, Journal of Sexual Medicine, Lancet Diabetes & Endocrinology and Nature Reviews Urology. His research findings have been featured in many national and international mainstream publications and broadcast outlets including: The Today Show, NBC Nightly News, ABC World News, CBS News,, CNN, Men’s Health Magazine, Men’s Journal and The Philadelphia Inquirer.

Dr. Irwig has presented over 100 lectures at hospitals and medical schools across the world on several topics including male hypogonadism and transgender health. He also serves as a reviewer for over 36 peer-reviewed medical journals.

He is the past president of the mid-Atlantic chapter of the American Association of Clinical Endocrinologists (AACE). He serves on national committees for AACE as well as the Endocrine Society, including the Endocrine Self-Assessment Committee (ESAP).

Dr. Irwig received his M.D. degree from Cornell University and completed his residency in internal medicine at the University of Virginia. He was a senior fellow in endocrinology, metabolism, and nutrition at the University of Washington in Seattle.

Dr. Irwig does not accept any funding from pharmaceutical companies.


Listen to Dr. Irwig's GW Healthcast podcasts below!

“Hormonal Care for Transgender Patients”

“Male Hypogonadism Diagnosis and Treatment”