Lutanen Health Named Boston’s Top Concierge Doctors by Boston Common Magazine

Boston Common Magazine has named Dr. Jay Luthar and Dr. Julia Loewenthal of Lutanen Health the Top Concierge Doctors in Boston for 2026. The recognition, published in the magazine’s Beauty & Wellness section, highlights the Back Bay practice’s work bringing longevity science into everyday clinical care.

For the physicians, the recognition affirms the belief they founded the practice on — that medicine works best when it starts from a strong physician-patient relationship.

More Than Access

Concierge medicine is often described in terms of convenience, direct access to a physician, longer visits, and a more personalized experience. Lutanen Health’s model, as Boston Common’s feature describes it, goes further and is built around sustained attention rather than episodic care.

Dr. Luthar, the practice’s founder and medical director, is a triple board-certified internist and faculty member at Harvard Medical School. Dr. Loewenthal, a double board-certified internist and Assistant Professor of Medicine at Harvard Medical School, co-leads longevity education initiatives for physicians and executives alongside him. Together, they built Lutanen Health around a model Dr. Luthar calls private health management.

“No one who has built significant wealth would leave their portfolio unmanaged until a crisis, then react,” he told Boston Common. Yet that reactive posture is still how most healthcare works. Lutanen Health was built to change that, tracking biomarkers, metabolic health, recovery, and body composition over time so small imbalances can be caught and corrected early, long before they become something more serious.

Longevity as Clinical Practice, Not a Trend

Dr. Luthar points out that “longevity” has become a crowded word, attached to supplements, biohacking, and wellness trends with little clinical grounding.

At Lutanen Health, longevity is treated as internal medicine practiced with a longer time horizon. It means making decisions today that support the next ten or twenty years, while also helping patients feel vibrant now.

Dr. Loewenthal brings a research dimension to that philosophy that few longevity-focused physicians can offer. As a funded researcher in aging and frailty, her work consistently points to the same conclusion: lifestyle has a profound effect on how people age. The habits that matter most are the ones sustained over time, and the goal isn’t simply a longer life. It’s a life marked by preserved strength, independence, and vitality.

Designed Around the Patient, Not the System

The depth Boston Common describes is only possible because of how the practice is structured. Initial appointments run two hours, giving physicians time to understand a patient’s medical history alongside their lifestyle, goals, and priorities. A Longevity Performance Assessment follows on the second visit, establishing a baseline that every future year of care is measured against.

Each physician at Lutanen Health cares for between 100 and 150 patients, one of the smallest panel sizes of any concierge practice in Boston. That number is intentional. “At this size, I can actually hold someone’s full story in my head,” Dr. Luthar said. “I know what’s normal for them, how they’ve changed over time, and the context behind their health and life decisions.”

That kind of continuity is difficult to replicate in a traditional practice model, no matter how skilled the physician. It comes from structural choices built into how the practice operates.

A Practice That Extends Beyond the Clinic

Boston Common’s feature also touched on Lutanen Home, the practice’s residential health design advisory. The team applies the same clinical and performance insight used in patient care to the physical spaces patients live in, working alongside homeowners, architects, and design teams to design homes that support long-term health.

Lutanen Health also operates as a Mass General Brigham affiliate, which means patients have direct access to the resources of one of the country’s leading academic health systems whenever specialty care is needed. Care stays coordinated and personal, even when it extends beyond Lutanen’s doors.

Grounded in Research, Focused on Relationship

As faculty physicians at Harvard Medical School, Dr. Luthar and Dr. Loewenthal remain closely connected to emerging research, and to the responsibility of teaching the next generation of physicians. “Academic medicine has a way of keeping you honest,” Dr. Luthar said. “New evidence is always emerging, and you’re constantly challenged to think critically about why you practice the way you do.”

That commitment to evidence, paired with genuine relationship, is what Boston Common recognized, and what the practice intends to keep building on. ‘The science will keep advancing, and we’ll keep bringing the best of it to our patients,’ Dr. Luthar said. ‘But the reason this model works is the relationship. That’s what we were recognized for, and that’s what we’ll keep building on.’”

Lutanen Health is located at 607 Boylston Street in Boston’s Back Bay. To learn more about our approach, meet Dr. Luthar and Dr. Loewenthal, or become a member.

About the Author:

Dr. Jay Luthar is a Harvard-trained internist and the founder of Lutanen Health, where he leads a longevity-focused model of primary care that blends advanced diagnostics, evidence-based medicine, and mind-body health. He is triple board certified in Internal, Integrative, and Lifestyle Medicine and teaches at Harvard Medical School. His work bridges modern clinical science with personalized, relationship-centered care.

Dr. Jay Luthar, MD, DipABLM

August 25, 2026