Meet Our Newest Longevity Medicine Physician - Dr. Seth Marquit

We’re thrilled to welcome Dr. Seth Marquit, M.D., M.P.H., FAAEM, DipABLM as our newest Longevity Medicine Physician. A dual board-certified physician in Emergency and Lifestyle Medicine, Dr. Marquit brings a unique blend of care expertise and preventive health strategy to our mission of adding ThriveYears™ by optimizing the 5 Drivers of Health and Wellness^© and bringing the best of evidence-based longevity medicine to those we serve.

Dr. Marquit earned his medical degree from St. George’s University and a Master of Public Health with a focus in preventive medicine from the University of South Florida. He completed his residency in Emergency Medicine at Beth Israel Medical Center in New York and is both a Fellow of the American Academy of Emergency Medicine and a Diplomate of the American College of Lifestyle Medicine.

His career spans high-impact clinical, academic, and leadership roles, which include Clinical Associate Professor at The George Washington University, Attending Physician at Walter Reed National Military Medical Center, and longtime Medical Director at the Pritikin Longevity Center + Spa, where he led lifestyle transformation programs aimed at reversing chronic disease.

Today, Dr. Marquit serves as clinical faculty at Mount Sinai Medical Center, mentoring the next generation of emergency physicians from FIU, FAU, and NSU. He’s also an international speaker, having lectured in Turkey, Grenada, and Mexico on integrative approaches to emergency and lifestyle medicine.

At BLU, Dr. Marquit combines cutting-edge diagnostics, precision health technology, and evidence-based coaching to help members prevent disease, reverse dysfunction, and optimize their healthspan and performance.

“What excites me most about BLU is being part of an extraordinary team aligned with a mission that transcends individual care. In medicine, especially Emergency Medicine, we often focus on saving one life at a time, but at BLU, our vision is broader: to help transform entire communities through education, prevention, and lifestyle change. I’m inspired by the Talmudic wisdom that says, “Whoever saves one life saves the world entire.” That truth reminds us that every act of healing ripples outward - when we help one person reclaim their health, we help restore families, strengthen communities, and uplift the world.”

His Care Philosophy
“The body has a remarkable capacity to heal when given the right environment—my job is to help patients build that environment."

We are honored to welcome Dr. Marquit to the BLU team and can't wait for our members to experience BLU and all that evidence-based longevity medicine has to offer.