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Dr. Sean Breen is a board-certified physician and is internationally recognized as a leading expert in Bioidentical Hormone Replacement Therapy (BHRT) for both men and women. Dr. Breen has been a pioneer in hormone therapy for decades. Long before it was widely accepted, he recognized what the evidence already showed: that thoughtfully prescribed hormones could dramatically improve — and even save — the lives of patients navigating menopause and andropause. He was practicing this medicine when few others would, and time has proven him right.

What sets Dr. Breen apart isn't only his expertise — it's the way he practices. He takes the time to truly listen, to understand each patient as a whole person rather than a list of symptoms, and to build the kind of relationship that real, lasting health requires. Patients consistently describe feeling genuinely seen and heard, often for the first time in their medical journey.

A proud veteran, Dr. Breen served nearly a decade as a Naval medical officer and battalion surgeon, both stateside and overseas during his deployment in Iraq in support of U.S. Marines. He was awarded the Navy and Marine Corps Achievement Medal with Valor for his service.

Dr. Breen is happily married to the love of his life, Erin, and together they have been blessed with three wonderful children. They reside in Orange County, California.