Physician-led hormone optimization, regenerative medicine, and longevity care designed for adults who already invest in their health but are not getting the results they expect. At Restoration Health 365 in Jericho, NY, we combine advanced diagnostics, bioidentical hormone therapy, peptide protocols, and integrated body composition testing to identify what conventional annual bloodwork routinely misses. Our concierge model removes insurance-driven shortcuts, so your physiology shapes your care. The goal is to restore function at the systems level, so you not only feel better but also perform better.
Bioidentical hormone replacement therapy (BHRT) calibrated to your lab data. We address persistent fatigue, unexplained weight changes, cognitive decline, mood instability, and slowed recovery at the receptor level for adults navigating menopause, andropause, or chronic imbalances that standard panels routinely overlook.
Peptide therapy and exosome treatments support cellular repair, tissue recovery, and immune resilience for adults whose performance and recovery have stalled despite a clean lifestyle. Each protocol is physician-managed and structured around what your diagnostic markers actually show.
DEXA body composition scans, VO2 max testing, and resting metabolic rate analysis reveal how your body actually performs under load. Combined with targeted exercise programming and lifestyle optimization, the data drives a plan you can sustain over the long term.
Direct-access, cash-pay membership with unlimited visits, phone calls, and ongoing lab review. No insurance codes shape your appointments, and your physician manages every protocol and every adjustment from intake forward. Care moves at the pace your physiology requires.
Restoration Health 365 was built around a frustration that too many high-functioning adults experience. Standard annual labs come back normal while real symptoms continue. Founded by Dr. Scott Flashner and Dr. Lawrence Kessler, the practice integrates advanced diagnostics with physician-managed protocols including hormone balance, regenerative medicine, IV supplementation, exercise optimization, and metabolic health. We do not treat lab values in isolation. We treat the patterns those values reveal across hormonal, metabolic, and inflammatory systems. From your first consultation through every protocol adjustment, your physicians stay directly involved. Your appointments run on your schedule, lab review is unlimited, and your physiology and goals shape your care.
Every visit, every lab review, and every protocol adjustment runs directly through Dr. Flashner and Dr. Kessler. Care is never handed off to medical assistants, coordinators, or midlevel providers.
In-office DEXA body composition scanning, VO2 max testing, RMR analysis, and comprehensive hormone and metabolic panels give your physicians a complete physiological picture before any protocol is built. Diagnostics drive decisions.
Every protocol, from BHRT to peptide therapy to IV supplementation, is grounded in current clinical research and refined based on your follow-up labs rather than fixed prescriptions or assumptions about how your body should respond. If the data moves, the plan moves with it.
Unlimited phone calls, in-person visits, and ongoing lab review come standard with the membership model. Appointments run on your timeline, and follow-ups are never an upcharge.
Patients who follow our protocols typically report sustained gains in energy, body composition, cognitive clarity, sleep quality, and recovery within the first three to six months, with continued refinement beyond the initial program window, allowing progress to compound.
“Restoration Health 365 changed my life. I finally have energy. My mind is clear, and I feel like myself again.”
Jessica L.
Dr. Kessler has been helping me for many years and I can say that I have never met another doctor that cares for their patient like he does. He takes time to explain the diagnosis as well as the treatment options. He is knowledgeable, patient, and incredibly helpful. This is exactly the way medicine should be.

I had my resting metabolic rate and body composition tested. Dr. Flashner was great. He took his time explaining my results to me. If you want to see a doctor who will spend time with you, this is the place to go.

Dr. Kessler has been wonderful with helping on my journey. He checks in on me weekly, and is always available when I have any questions. He truly cares about my health and progress.

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Take control of your wellness at the cellular level. Restoration Health 365 was built for patients who are ready for a physician-led approach grounded in real data and a care model that moves as fast as your results demand.