Doctor-led IV clinic · New York, United States

Lionheart Longevity Manhattan

240 W 37th St., 5th Floor, New York, NY

DOCTOR-LED IV CLINIC Listed, not ranked

YesOne-off tests and treatments
YesProgrammes and memberships
YesLongevity medicine
Not listedAnti-ageing (aesthetic) medicine

Lionheart Longevity Manhattan is a regenerative and longevity medicine clinic on West 37th Street in Midtown Manhattan, with its flagship in Newport Beach, California. Its annual membership includes twice-yearly biomarker panels, a personalised therapeutic protocol and a year-end physician summary, with peptide, exosome and stem cell stimulation treatments. It scores 64 out of 100. Published prices start at US$463 a year for Membership (enrolment). Its licence has not yet been checked in an official register.

Clinic report

US · NYC · LIONHEART-LONGEVITY-MANHATTAN · CHECKED 16 OCT 2026 · SCORE v1.1

64/100

Reviews 45.9/60Medical 4/20Programme 14/20

Not ranked

Listed but not ranked: this type of provider does not offer a doctor-led longevity assessment.
Licence or registration not yet confirmed in an official register.
Fewer than 10 reviews of the clinic itself.
Reviews not yet read for this guide.

Check	Result	Points	Basis
Reviews	Google 5.0 from 2 reviews	45.9 / 60	Rating 4.53 after the review-count adjustment; in the United States Google counts for every clinic; Tripadvisor also counts for medical wellness retreats. Checked 16 Oct 2026.
Licence or registration	Not yet checked	0 / 8	Not yet checked in the AHCA register, the NYSED register, the Medical Board of California, the Florida DOH register or the state medical board
Medical director	Dr. Leslie Miller	4 / 4	Named with a specialty
Doctor registration	Not yet checked	0 / 4	The NYSED register is checked by hand
Clinical team	No wider team named	0 / 4	No team named on the pages we read
Prices published	1 price	4 / 4	Prices for core services on the clinic's own pages
Inclusions published	Yes	2 / 2	What each programme includes is published
Evidence-based tests	1 test with points	2 / 8	Blood panel 2; Whole-body MRI 0
Doctor consultation	Stated	3 / 3	A consultation with a doctor is part of the assessment
Written plan and follow-up	Both stated	3 / 3	A written plan and a follow-up are stated
Penalties	None	0	Review pattern not yet read

Total 45.9 + 4 + 14 − 0 = 63.9, shown as 64. How we score

What reviewers say

SYNTHESIS BY AI

Review summary coming soon.

We read the 100 newest and the 10 lowest-rated Google reviews of each clinic, and an editor checks every summary before it goes up.

Tests and treatments

What the evidence labels mean

Diagnostics

Advanced blood panel · listed as “461+ lab biomarkers (Klotho, inflammation, metabolic, hormone, organ health)”ESTABLISHED
Whole-body MRI · listed as “AI-enhanced thin-slice MRI”UNPROVEN

Regulator note. The American College of Radiology finds insufficient evidence to recommend total-body MRI screening for people without symptoms. ACR statement, 2023

Treatments

Peptide therapy · listed as “Peptide protocols”UNPROVEN

Regulator note. In April 2026 the FDA moved BPC-157 and 11 other peptides out of its group of compounding substances that raise significant safety risks, but kept its warning that compounded BPC-157 may cause immune reactions. This alone does not allow pharmacies to make them up. Ask the clinic which products it uses and where they are made. FDA, compounding substances that may present safety risks, April 2026
Stem cell therapy · listed as “Stem cell stimulation”UNPROVEN

Regulator note. The FDA says regenerative medicine products, including stem cells, need FDA approval before they are marketed to consumers, and it has reports of blindness, tumours and infections after unapproved products. FDA, information about regenerative medicine therapies
Exosome therapy · listed as “Exosome therapy”UNPROVEN

Regulator note. The FDA says there are currently no FDA-approved exosome products and warns consumers about unapproved regenerative products. FDA consumer alert on regenerative medicine products

Programmes and memberships

Executive health check · listed as “executive physical”DEPENDS ON USE
Annual or monthly membership · listed as “Membership (annual, application-only)”DEPENDS ON USE

Prices

Item	Price	About US$	Includes
Membership (enrolment)First-time or first-year offer	US$463 a year	–	Plus year-end review fee $365 (about $828 a year per FAQ); limited-time enrolment cohort; treatments and advanced diagnostics extra

From the clinic's lionheartlongevity.com, checked 16 Oct 2026. US dollars at the ECB rate of 20 Oct 2026, for comparison only.

Medical team

Dr. Leslie Miller Chief Medical Officer & Board Director (Lionheart Longevity group) CardiologyNYSED: NOT YET CHECKED

As named on lionheartlongevity.com, checked 16 Oct 2026.

Questions to ask Lionheart Longevity Manhattan

Which doctor will see me, and is their NYSED registration current?
If a scan finds something that needs follow-up, who reviews it, and what does the follow-up cost?
Does the membership renew on its own, and how do I cancel it?
Where do the products for drips, injections or compounded medicines come from, and who gives them?

Licence

NOT YET CHECKED

We have not yet checked Lionheart Longevity Manhattan in a state register. The details here come from the clinic's own pages.

Clinic licence: Florida Agency for Health Care Administration, health care clinic licence
Doctors: New York State Education Department, Office of the Professions (licence verification)
Doctors: California Department of Consumer Affairs licence search (Medical Board of California)
Doctors: Florida Department of Health, MQA licence verification
Doctors: The state medical board for the clinic's state (list kept by the Federation of State Medical Boards)

Practical

Address: 240 W 37th St., 5th Floor, New York, NY
Type: Doctor-led IV clinic: A clinic with a named doctor in charge whose main services are IV drips and related treatments, not a longevity assessment with a written plan. Listed, never ranked.
Website: lionheartlongevity.com
Languages: Not stated
Also in New York: Elitra Health Next Health NYC Biograph NY 360 Wellness Medicine Heal From Within (HFW)Extension Health West Village Longevity Place Atria New York The 41 clinics we list in New York

Public ratings

Google	5.0 · 2	16 Oct 2026
Tripadvisor	No listing found

Counted in the United States Google counts for every clinic; Tripadvisor also counts for medical wellness retreats. Rating after the review-count adjustment: 4.53. Reviews are not verified as coming from patients.

Is this your clinic?

Send a correction, or your doctors' NYSED numbers, to clinics@longevityclinicsguide.com. We reply within ten working days. For clinics

Sources

Clinic website, read 16 Oct 2026 Membership page, read 16 Oct 2026 About page, read 16 Oct 2026 Google Maps listing, read 16 Oct 2026

Listed from public information.