Founder & Medical Director

Sean Breen

Practice:Breen Center for Optimal Health

Irvine, CA

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About Sean Breen

Sean Breen is the founder and medical director of the Breen Center for Optimal Health in Irvine, California. He is board certified by the Metabolic Medical Institute in functional and regenerative medicine, and the practice describes him as internationally recognized for his work in bioidentical hormone replacement therapy for both men and women. Before entering private practice he served in the United States Marine Corps and spent nearly a decade as a Naval medical officer and battalion surgeon, both stateside and deployed in Iraq in support of US Marines, and was awarded a Navy and Marine Corps Achievement Medal with Valor. He built the practice around a proprietary five-step program of advanced laboratory work, in-depth diagnostics, an executive physical, a customized wellness plan, and ongoing support. He lives in Orange County with his wife and three children.

From the practice's own website.

Training & credentials

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Board certification
  • Metabolic Medical Institute
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