Extension Health is a New York treatment clinic with two locations, a large procedure menu and three premium care tiers. New-patient consultations start at $400. Reboot is listed at $15,000 per day and described as a two-day program, implying $30,000 for the stated course before separate charges. Catalyst costs $50,000 a year and Superhuman costs $250,000 a year, but public pages do not convert physician oversight into guaranteed doctor hours.
What we checked
We checked the provider’s current program pages and, where available, independent or regulatory sources listed below. We then separated standard inclusions from optional costs and open questions. Every source carries the date we reviewed it.
The short answer
Extension Health publishes unusually clear headline prices for a clinic selling therapeutic plasma exchange, EBOO, peptides, regenerative procedures and broad diagnostic testing. That transparency is useful, but the highest-cost services mix established procedures used for defined diseases with interventions whose longevity use or regulatory status needs separate scrutiny. Compare the exact treatment list, device and biologic status, doctor time and follow-up plan before treating a large tier price as an all-inclusive medical program.
At a glance
Extension Health is not one standardized checkup. It sells consultations, à-la-carte diagnostics, elective procedures and three different high-cost care tiers. Its menu includes therapeutic plasma exchange, EBOO, peptides, IVs, nerve blocks, regenerative orthopedics, stem-cell and exosome services. The right comparison therefore starts with the treatment or clinical question, not the clinic brand as a whole.
The clinic lists new-patient consultations from $400. Reboot is $15,000 per day and described as a two-day program, implying $30,000 for the stated course before separate charges; Extension Health does not publish $30,000 as an all-in total. Catalyst is $50,000 a year and lists quarterly biomarker testing, monthly coaching, three targeted peptides a month and $15,000 in treatment credits. Superhuman is $250,000 a year. Ask which outside services, drugs, laboratory fees and complication care remain separate.
The clinic says Superhuman care is personally overseen by Dr. Kuo and that Catalyst uses a longevity strategy team with monthly coaching. It does not publish a guaranteed number of physician appointments or minutes for either tier. Extension Health also says select Superhuman services happen outside its clinics: stem-cell infusions in Florida and gene therapy through what it calls approved international sites. Get the treating clinician, location, travel cost, appointment cadence and responsibility for complications in writing.
Therapeutic plasma exchange is an established medical procedure for defined diseases. The American Society for Apheresis guideline grades its use by diagnosis and evidence; it is not a blanket endorsement for general longevity treatment. Ask Extension Health for the diagnosis or evidence category supporting the proposed use, the replacement fluid, treatment schedule, vascular-access plan and adverse-event protocol.
The FDA says there are no FDA-approved exosome products and warns that many stem-cell products marketed for orthopedic, neurological and other conditions have not been approved. In 2025 it also warned an EBOO-device manufacturer over unapproved devices, which does not establish what device Extension Health uses. Before treatment, request the product name, manufacturer, lot, cell source, FDA approval or IND status, device model and written consent document.
Extension Health publishes the clearest premium tier prices and concentrates care in Manhattan. Humanaut has lower-cost longitudinal testing and a defined provider-time schedule, with elective therapies priced around that membership. Eterna operates internationally and focuses more heavily on cell and exosome services but does not publish a comparable total. Compare the specific intervention, regulatory jurisdiction and clinician follow-up, not the prestige of the menu.
New-patient consultations start at $400. Reboot is $15,000 per day for two days, implying $30,000 before separate charges. Catalyst is $50,000 a year and Superhuman is $250,000 a year.
The public page lists quarterly biomarker testing, monthly coaching, three targeted peptides a month and $15,000 in credits for selected procedures. Confirm medication, laboratory and outside-care charges.
The clinic says treatments require a new-patient consultation. Some standalone diagnostics, including DEXA and VO₂ max, can be booked without a clinical consultation.
The clinic page does not establish approval for each offered product. FDA says no exosome products are currently approved and most stem-cell products require approval. Ask for product-specific approval or IND documentation.
Extension Health lists two New York City sites: its West Village flagship and a Midtown East location.
By David Persson · Review updated 2026-07-16 · Sources checked 2026-07-16 · Read the clinic review methodology · Submit a correction
Agewell is an independent buyer’s guide, not a medical provider. Screening and treatment decisions should be made with a qualified clinician who knows your history.
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