LifeSpan Medicine
LifeSpan Medicine's Dallas office is part of the concierge practice Dr. Chris Renna founded in 1992. The practice runs two programs: a Comprehensive Concierge evaluation and a Platinum year capped at 75 clients, joined by referral. Platinum diagnostics include functional brain MRI and cognitive-risk panels, with a Regenokine joint and spine arm. People come here for brain health, gut health, and emerging care.
The care team
Every clinician the operator publishes by name, with their role exactly as the operator states it.
LifeSpan Medicine runs three offices, Santa Monica, Dallas and Miami, and publishes its ten clinicians centrally on one team page rather than assigning them to a location, so nobody is named specifically for Dallas. Dr. Levitt's biography lists licences in Florida, Minnesota and North Carolina, which does not include Texas.
Across LifeSpan Medicine
Dr. Chris Renna, DO
DO.
Published qualifications"Dr. Renna graduated from University of Texas, earned his medical degree cum laude from the University of North Texas Health Science Center and completed a residency in family medicine." It adds that he founded LifeSpan medicine in 1992, that he is "a published author, popular public speaker and lecturer", and that the Platinum Program is "led by world renowned longevity physician, Dr Chris Renna"
Alison Levitt, MD
Dr. Olivia Lesslar, MD
MBBS from Bond University, Queensland, Australia.
Published qualifications"an Australian-educated and trained doctor with a passion for preventative medicine, integrative medicine". It states she "has her medical degree from (MBBS) Bond University in Queensland Australia, after completing an undergraduate degree in International Relations with a triple major including French and diplomacy", holds "certificates in remedial therapies including herbs, nutrition, and acupressure" and "an Advanced Certificate in Skin Cancer Medicine", and "has worked with the Neuroimmunology Associates of New York"
Dr. Laura Caldwell, MD, ABEM, ABLM
Board-certified in Emergency Medicine and Lifestyle Medicine.
Dr. Paris Whitney, DO
Board certified functional medicine practitioner and board certified family physician.
Dr. Melissa Sundermann, DO, DipABLM, FACLM
Double-board certified in Internal Medicine and Lifestyle Medicine.
Published qualifications"Dr. Sundermann earned her medical degree in Internal medicine from Michigan State University. She is double-board certified in Internal medicine and Lifestyle medicine." It states she practised at Integrated Health Associates and "most recently, Canyon Ranch in Lennox, Massachusetts", and is "an active member of A4M, IFM and the American College of Lifestyle Medicine"
Dr. Moshe Ben-Roohi, MD, FAAPMR, DABPM
Double board certified in Physical Medicine and Rehabilitation and in Pain Medicine.
Dr. Mary Dohrmann, PHD-C, LPC, NCC, RPT, C-PAT
Licensed professional counsellor with a Ph.D. in Counseling Education and Supervision.
Rachel Swanson, MS, RD
Registered dietitian with a master's in nutrition from NYU.
Dr. Kathy Xydis, DCN, CNS, LDN
Doctorate in Clinical Nutrition, Certified Nutrition Specialist and Licensed Dietitian Nutritionist.
Published qualifications"With a Doctorate in Clinical Nutrition and dual certification as a Certified Nutrition Specialist and Licensed Dietitian Nutritionist, Dr. Xydis merges rigorous academic training with years of hands-on clinical experience." Her published areas are listed as gut microbiome rebalancing and postbiotic therapies, targeted detoxification including mold and mycotoxins, cellular longevity and mitochondrial protocols, metabolic and GI axis optimization, and hormonal resilience strategies.
Published by LifeSpan Medicine at organisation level · source ↗
Care at LifeSpan Medicine
What people come here for, the kinds of care LifeSpan Medicine offers, and its specific tests and services.
What people come here for
Kinds of care
Tests and services
- Brain MRI with volumetrics
- Measures brain structure against your age group.
- Gut microbiome testing
- Profiles gut bacteria to guide digestive care.
- IV vitamin therapy
- Vitamin and fluid infusions marketed for energy and recovery.
- PRP injections
- Your own concentrated platelets injected for joints, skin or scalp.
More care this clinic lists, in its own words.
See every clinic that offers these.
Practical information
Confirm anything time-sensitive directly with the clinic before your visit.
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Selected based on location and overlapping tests and services.
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Do you run LifeSpan Medicine?
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- Describe your care in your own words
About this profile and its sources
9 sources
Everything on this page is what the clinic publishes about itself, gathered from the pages linked below and put in one place, in plain English. Where a fact comes from somewhere else, it is named beside that fact.