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Executive Team

Carlos A Montesinos
Carlos Montesinos
Chief Executive Scientist

Carlos is a molecular biologist, formulation scientist, and a highly regarded speaker in the medical and nutritional education world. He is sought-after for his scientific excellence, ethics and sincerity. In addition to being awarded a Space Act Agreement by NASA, he's had the honor of consulting, collaborating and speaking at organizations such as The New York Academy of Medicine and The Royal Society of Medicine in the United Kingdom, among others. He is a member of the American Association of Pharmaceutical Scientists.


Carlos was also one of the youngest professional tennis umpires in the history of the sport. He enjoys gourmet cooking and international travel. He lives in Houston, a convenient location to advance promising research with the Space Program.

Brad Stevenson
Brad Stevenson
Executive Vice-President

Brad's expertise and passion lie in organizational and individual performance. He has advised, coached and led top businesses, healthcare providers and corporate wellness organizations.

Starting his career at The Boston Consulting Group, Brad is a seasoned business executive, strategist and corporate development professional who has excelled in market development projects for companies large and small.

He lives in the mountains of Colorado, a cradle of elite level and extreme sports. Brad is an avid backcountry explorer, mountain biker, skier and kite-boarder.

Leigh Fernandez
Leigh Fernandez
Director of Operations & Customer Experience

If you ever wondered what makes Nugevity’s wheels spin, the answer is Leigh. She is the one essential figure in the totem pole. As an entrepreneur, Magna-Cum-Laude graduate of Southern Methodist University, process development expert, marketing guru, and decade-long user of Nugevity products, few people are better suited to getting the job done. Leigh has been servicing many of our customers with a smile since 2003.


She enjoys baking, is a fan of science fiction/fantasy books, and has recently started hiking. She loves nature and spending time outdoors. 

Amy Hopkins
Amy Hopkins
Customer Service Specialist

Amy is our dedicated customer happiness agent and friendly voice on the other end of the line. She has a strong history in customer service roles and always puts our customers first. 


She adores her dog and spends many evenings by the fire with him. Her backyard garden is home to two wild turtles, and she can see the Sandia Mountains from her house in New Mexico.

Scientific Advisory Board

Marwan Sabbagh
Marwan Sabbagh, MD, FAAN, CCRI
  • One of the world’s leading experts in Alzheimer's disease and dementia

  • Principal investigator for various prominent national brain health clinical trials, including Alzheimer immunotherapy studies

  • Professor of Neurology, University of Arizona College of Medicine

  • Over 250 peer reviewed scientific publications

  • Senior editor for the Journal of Alzheimer’s Disease and Clinical Neurology

  • Author of several top-selling books and texts on Alzeimer’s Disease

Michael Lewis
Col. Michael Lewis, MD, MPH, MBA, FACPM
  • Founder of the Brain Health Education and Research Institute

  • Fmr Director of Epidemiology, Uniformed Services University School of Medicine. Trained at Johns Hopkins University and Walter Reed Institute of Research. Graduate of US Military Academy at West Point

  • Developed omega-3 nutritional protocol for US soldiers and military personnel at risk of brain injury and PTSD

  • Medical Director of BrainCARE, a Potomac, MD-based center specializing in the integrative treatment of brain injuries

Douglas Boreham
Douglas Boreham, PhD
  • Division Head, Medical Sciences at the Northern Ontario School of Medicine

  • Professor of Medical Physics, Applied Radiation Sciences at McMaster University

  • One of the world's leading researchers in radiation biology, health effects, and radioprotectant agents

Jennifer A Lemon
Jennifer A. Lemon, PhD
  • Renowned scientist specializing in the molecular biology of aging, disease, and their modification through diet

  • Research Development Coordinator at the Northern Ontario School of Medicine; Research Associate at McMaster University

Daniel Johnston
Lt. Col. Daniel Johnston, MD, MPH
  • Former Medical Director for the US Army Comprehensive Soldier Fitness Program

  • Physician Lead at the Office of the Surgeon General, US Army

  • Former White House Medical Aide to the U.S. President and First Lady

  • Founder and Medical Director at BrainSpan, a revolutionary biomarker assessment firm

Mary Vacala
Mary Vacala, MSPAS, ATC, PAC
  • Trainer to US Olympic Teams, including Women's Volleyball, Basketball, Wheelchair Basketball teams; Men's Weightlifting and Wheelchair Basketball.

  • Professor, South University. Fmr President, Georgia Association of Physician Assistants

Todd Sheldon
Todd Sheldon, OD, MBA
  • Class valedictorian, University of Houston College of Optometry

  • Naval Staff Optometrist, directing vision correction programs for fighter pilots

Bradley Greider
Bradley W Greider, MD, MS, FACS
  • Stanford School of Medicine

  • Fellow, American Academy of Ophthalmology

  • Residency - Jules Stein Eye Institute at UCLA

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