Liminal Longevity

About Liminal Longevity

What is Liminal Longevity?

Liminal Longevity is a physician-led longevity practice at 493 Danbury Road in Wilton, Connecticut, 06897. The phone number is (203) 587-1414, and the listed hours are Monday through Friday, 9AM to 5PM. Two physicians are named as prescribers. Frank Hermantin, MD, is a board-certified orthopedic surgeon and fellowship-trained spinal specialist with over 25 years of experience. He is certified in Longevity Medicine and holds a Certificate of Added Qualification in Hyperbaric Medicine. Jennifer Phelps, MD, MS, is board-certified in Family Practice and Integrative Medicine, with advanced certifications in Longevity Science and Hyperbaric Medicine. Their son, Pharo Hermantin, is the business manager and a certified personal trainer. He is not a prescriber.

The clinic lists five services: Longevity Medicine, Integrative+ Functional Medicine, Hyperbaric Oxygen Therapy (HBOT), Regenerative Medicine, and the Liminal Collective Experience, a group program built around community and mind-body circles. The longevity program is individualized from lab results, biomarkers, scans and genetic assessments, with nutrition, fitness and cognitive health plans added on. Regenerative Medicine uses platelet-rich plasma (PRP) injections for joints, tendons and ligaments. The clinic does not list weight loss or hormone therapy among its services.

This listing is for its Wilton office at 493 Danbury Rd.

What does it cost?

Liminal Longevity does not publish prices, a consultation fee, or a membership fee. It also does not say whether insurance is accepted, or whether a monthly fee would include medication. Its programs are individualized, and in its own words: "Costs may vary depending on which diagnostics are necessary." Expect the real total to depend on which tests come first, so the first firm number will likely come after your initial conversation.

What should you ask before you book?

The main next step on the site is a Discovery Call. Ask whether that call has a fee, and whether a physician is on it. Ask which of the two physicians would prescribe for you, and whether that person sees patients in person. The clinic does not say whether telehealth is offered.

Ask whether the program fee includes medication, and whether any drug is brand-name or compounded. Ask what lab work, scans and genetic tests cost, since those costs vary. For HBOT and regenerative injections, ask the price per session and how many sessions a typical plan involves. Dr. Phelps's bio mentions Ketamine-Assisted Psychotherapy, which is not among the five listed services, so ask whether it is offered and what it costs. Finally, ask how cancellation works, what you would pay if you stopped partway through, and whether any payment is refundable.

Who is it a good fit for?

This is a good fit if you want a physician-led practice centered on longevity and regenerative care for joints and tendons, you are prepared to pay cash for testing and treatment, and you are comfortable waiting for a firm price until after a first conversation. If you are looking specifically for weight loss or hormone therapy, this clinic does not list either, so confirm that before you book.

Sources: liminallongevity.com, liminallongevity.com/contact, liminallongevity.com/team

Services Offered

Hours

Mon-Fri: 9AM- 5PM

Location