By: Daisy Fay Buchanan

Dr.Jonathann Kuo, 46, runs Extension Health, a Manhattan longevity clinic specializing in high-end anti-aging treatments, including $12,000 plasma exchanges and $5,000 sexual health therapies. His clientele includes biohackers, CEOs, professional athletes like Troy Aikman, and even royalty, according to an exclusive report by the New York Post.

Kuo originally founded Hudson Health as a pain management clinic but shifted his focus after experiencing his own health struggles. In his late 30s, he found himself overweight, pre-diabetic, and constantly sluggish.

He told the New York Post he suffered from brain fog and an inability to focus, which led him to explore cutting-edge treatments. His personal transformation inspired Extension Health, which rebranded last summer as a longevity destination.

The clinic, located at 160 7th Ave S., offers some of the most advanced anti-aging therapies available. Kuo told the New York Post there is no other facility in New York City, or even globally, that provides such a comprehensive range of treatments under one roof. He plans to introduce a $250,000 annual membership covering the most advanced testing and therapies, with two lower-priced tiers starting around $10,000 per year. Services are also available à la carte.

Extension Health attracts two main types of patients: those battling chronic illnesses like Lyme disease and mold exposure, and biohackers, celebrities, and executives eager to explore the latest longevity science. Many patients fly in from around the world for treatment. Recent clients include La La Anthony, filmmaker Justin Baldoni, Tesla director Kimbal Musk, and football legend Troy Aikman.

New patients begin with a consultation starting at $400. A $999 diagnostic package includes a DEXA scan for body composition, a VO2 max test for cardiovascular fitness, a 3D postural alignment scan, resting metabolic rate analysis, comprehensive bloodwork, and a consultation. A more basic $699 package includes everything except bloodwork. While some lab work may be covered by insurance, most treatments are out-of-pocket.

Kuo told the New York Post his longevity approach focuses on three key areas: metabolism, hormones, and inflammation. He starts by optimizing diet, sleep, and exercise. Beyond that, he uses peptides, supplements, and medications to enhance cellular health. Peptide therapy, which involves amino acid chains that influence cellular function, plays a key role in his practice. Peptides can stimulate collagen production, protect skin, and act as antioxidants. They are administered through injections, pills, or topical creams, often costing over $300 per month per peptide. Many patients take several at once.

Kuo believes peptides and hormone optimization can improve metabolism, reduce inflammation, and enhance insulin sensitivity. He emphasized that his ultimate goal is to improve cellular function, which he sees as the foundation of longevity.

One longtime patient, retired hairdresser Craig Linsley, told the New York Post he has been seeing Kuo for over a decade and spends about $5,000 annually on peptide therapy to manage his arthritis. He credits the treatments with keeping him strong and resilient.

While the FDA hasn’t approved any drugs specifically for aging, since it’s not classified as a disease, doctors like Kuo can prescribe medications off-label. Despite regulatory hurdles, demand for longevity treatments is growing, and clinics like Extension Health are leading the charge.

As Kuo told the New York Post, his goal isn’t just to extend life but to improve its quality, helping patients stay active.