Regenexx at New Regeneration Orthopedics - Sarasota, FL

5630 Marquesa Circle
Sarasota, FL 34233

5630 Marquesa Circle, Sarasota, FL 34233


James Leiber, DO, is founder and medical director of Regenexx Tampa Bay and Regenexx at Gold Coast Orthopedics in Florida. He is a former officer, physician, and educator in the Air Force for 11 years – including personal consulting physician to the vice president and president at the White House and former Assistant Clinic Professor at the Uniformed Services University of the Health Sciences. He is an Associate Professor at LECOM where he was full-time for 5 years and served as the co-creator of an innovative medical school course in Integrative Clinical Nutrition. He has completed fellowship training in research, teaching, and curriculum development at UNC-Chapel Hill and is triple board-certified in Neuromusculoskeletal Medicine, Pain Medicine, and Family Medicine – as well as Registered in Musculoskeletal Sonography. He is also formally trained in Functional Medicine.

Dr. Leiber focuses on Interventional Regenerative Orthopedics and is honored to have been the first Regenexx Provider in Florida starting in 2012. As medical director of one of the longest-running Regenexx clinic and amongst the most experienced Regenexx affiliates, he is proud to be offering the nation’s most advanced non-surgical stem cell and platelet treatments (PRP) for injuries and arthritis under image guidance utilizing ultrasound and fluoroscopy (X-ray).

He is the former program director and current senior instructor for the Not-For-Profit Interventional Orthopedic Foundation (IOF).  He was the lead consultant to surgeons and interventionalists at a large Brazilian healthcare network as they began clinical trials in stem cell and PRP treatments. He has authored various research and textbook publications and has been an invited speaker at medical conferences.  Dr. Leiber was awarded the prestigious Emerging Leader Award by the American Osteopathic Foundation in 2005 and the Saunders Book Award for outstanding academic achievement in physiology and pharmacology in 1999. At Boston University, Dr. Leiber spent 2 years as an Aerospace Engineering major before switching to Pre-Med and graduating with a double major (B.A.) in Psychology and Economics.

He maintains medical licenses in FL and Grand Cayman. He also travels to Cayman regularly to treat patients with their own culture-expanded stem cells. Dr. Leiber believes that the key to treatment is a collaborative relationship between doctor and patient and an understanding that every person and situation is unique. He is originally from NYC (with strong family ties to Argentina) but has lived in all regions of the U.S. and enjoys spending time with his family. He resides on the SW coast of FL with his wife and daughter.

Dr Leiber is licensed in Florida and Grand Cayman.

Areas treated: Cervical Spine (Not Upper Cervical or CCI)*, Elbow, Foot & Ankle, Hand & Wrist, Knee, Lumbar Spine, Shoulder, Thoracic Spine

Dr. Ignatios Papas is a non-surgical orthopedic physician specializing in interventional musculoskeletal and rehabilitation medicine at New ReGeneration Orthopedics. Dr. Papas is a native Floridian and received his bachelor of science degree in Microbial and Molecular Biology from the University of Central Florida and his master of science degree in Neuroscience and Aging from the University of South Florida, Morsani College of Medicine.

He completed his residency in Physical Medicine and Rehabilitation at Carolinas Medical Center in Charlotte, North Carolina where he served as Chief resident and founded the program’s Musculoskeletal Ultrasound Curriculum. Dr. Papas has taught courses in musculoskeletal ultrasound to residents across multiple specialties and to medical students. During his academic chief tenure he was voted Medical Educator of the Year at Carolinas Rehabilitation.

At New ReGeneration Orthopedics of Florida and Regenexx Dr. Papas focuses on Interventional Regenerative Orthopedics – Offering the Nation’s Most Advanced Non-Surgical Stem Cell and Platelet Treatments for Injuries and Arthritis under image guidance using ultrasound and fluoroscopy (live X-ray). Dr. Papas continues to conduct research involving musculoskeletal ultrasound and sports medicine. He is a member of the American Medical Society for Sports Medicine, the American Academy of Physical Medicine and Rehabilitation, the American Academy of Orthopedics, the Spine Intervention Society and the American Osteopathic College of Physical Medicine and Rehabilitation.

When he isn’t practicing medicine he enjoys spending time with his new baby, playing soccer, practicing guitar and listening to historical podcasts.

Areas treated: Cervical Spine (Not Upper Cervical or CCI)*, Elbow, Foot & Ankle, Hand & Wrist, Hip, Knee, Lumbar Spine, Shoulder, Thoracic Spine

Ronald Torrance II, DO FAOASM, is a non-surgical orthopedic physician specializing in Sports Medicine at New ReGeneration Orthopedics – Regenexx Tampa Bay.  He was born in Erie, Pennsylvania, and moved to Sarasota, Florida when he was 12. Dr. Torrance excelled in sports – basketball, football, and baseball and graduated from Sarasota’s Riverview High School as a two-sport student athlete. After high school, he accepted a combined academic and athletic scholarship from Limestone College in Gaffney, South Carolina. While there, he played baseball and graduated with a double Bachelor of Science Degree in Biology and Chemistry with a minor in Mathematics. Dr. Torrance graduated from Lake Erie College of Osteopathic Medicine in Lakewood Ranch, Florida then completing his Family Medicine Residency in the Greater Philadelphia Area followed by a fellowship in Sports Medicine in Vineland, NJ with Inspira Health Network. He is licensed to practice medicine in the states of Florida, Pennsylvania and New Jersey.

Dr Torrance’s clinical practice focuses on Interventional Regenerative Orthopedics – Offering Regenexx procedures – the Nation’s Most Advanced Non-Surgical Stem Cell and Platelet Treatments for Injuries and Arthritis under image guidance using ultrasound and fluoroscopy (live X-ray).

He has published in peer reviewed journals and is an invited speaker at medical conferences. In 2018, he co-authored Exercise 2.0 for Regenexx.

Dr. Torrance has also been through formal continuing education in Functional Medicine through the California Center for Functional Medicine.

He was invited to work on the medical staff at the 2016 CrossFit Regionals and 2016 CrossFit Games. Alongside his medical career, Dr. Torrance has continued his athletic pursuits. He has achieved a ranking as a semi-professional beach volleyball player, and trains as a competitive CrossFit athlete. His recent sports accomplishments include finishing 197th in the Mid-Atlantic Region as an individual athlete in the 2016 CrossFit Open, as well as qualifying a team for the 2016 Kill Cliff Granite Games.

Areas treated: Elbow, Foot & Ankle, Hand & Wrist, Hip, Knee, Shoulder

Lisa Valastro, DO specializes in Physical Medicine and Rehabilitation with a focus on regenerative medicine via orthobiologics.

Dr. Valastro received her medical degree from Lake Erie College of Osteopathic Medicine in Erie, Pennsylvania. In medical school, she focused her electives on orthopedic and sports medicine to gain a deeper understanding of the musculoskeletal system. Throughout her osteopathic training, Dr. Valastro developed an appreciation of the body’s innate ability to heal and regulate itself. These principles led her toward her ultimate career goal of providing care through regenerative medicine.

Dr. Valastro completed her Physical Medicine and Rehabilitation training at Albany Medical Center in Albany, New York, where she was elected chief resident and independently restructured the weekly educational curriculum.  Outside of clinic hours, Dr. Valastro organized a peer-to-peer ultrasound study program to improve the hands-on ultrasound skills of AMC’s residents.

To further Dr. Valastro’s training in orthobiologics for the musculoskeletal system, she completed a fellowship with Dr. Marko Bodor in Napa, California. This fellowship focused on Spine, Sports, Electrodiagnostics, and Regenerative Medicine. She was involved in various research projects with Dr. Bodor and the Napa Medical Research Foundation. During this training, Dr. Valastro developed advanced skills in image-guided injections, both with ultrasound and fluoroscopy.

Dr. Valastro grew up in upstate New York and loves spending time in the Adirondacks for hiking and snowshoeing. In her spare time she also enjoys kayaking, weight lifting, and volleyball. She has settled in Tampa, Florida with her husband and Labrador Retriever.

Dr. Valastro is a licensed physician in Florida, California, and New York State.

Areas treated: Cervical Spine (Not Upper Cervical or CCI)*, Elbow, Foot & Ankle, Hand & Wrist, Hip, Knee, Lumbar Spine, Shoulder, Thoracic Spine

Dr. Duron A. Lee is a non-surgical orthopedic physician specializing in sports medicine at Regenexx at New Regeneration Orthopedics, in Winter Park, FL. His clinical practice centers on interventional orthobiologics, with a focus on offering Regenexx highly specific and precise image-guided injection procedures. These innovative procedures utilize the patient’s own cells and healing agents to harness the body’s natural healing capabilities, enhancing pain relief and functionality.

Originally from Massachusetts, Dr. Lee brings a wealth of expertise back to Florida after dedicating years to advanced medical training and groundbreaking research. His doctoral pursuits in biomedical engineering, with a specialization in regenerative medicine and tissue engineering, have culminated in multiple publications and symposium talks. With NIH-funded research, he has contributed extensively to the field.

Dr. Lee’s commitment to patient care is unwavering. His meticulous and evidence-based approach to medicine is complemented by his dedication to incorporating his diverse clinical and academic background into his practice. He values each patient’s uniqueness, irrespective of factors such as race, ethnicity, gender, or physical capacity. Dr. Lee’s dedication to advancing non-surgical orthopedic care, underpinned by his comprehensive background and commitment to patients, makes him an exceptional asset to Regenexx and the field of orthopedic regenerative medicine and Dr. Lee is proud to add Regenexx physician to his list of credentials.

Education and Credentials:

  • Board Certified in Family Medicine (ABFM)
  • Fellowship trained at Penn State University with Certificate of Added Qualifications in Primary Care Sports Medicine (ABFM)
  • Residency trained in Family Medicine at Bryn Mawr Hospital, Pennsylvania
  • Completed General Surgery internship at Lankenau Medical Center, Pennsylvania
  • Medical Degree from Drexel University College of Medicine, Pennsylvania
  • Doctoral candidate in Biomedical Engineering from Drexel University, Pennsylvania
  • Master of Science degree in Biomedical Sciences from Barry University, Florida
  • Bachelor of Science degree in Chemistry from Rensselaer Polytechnic Institute, New York


  • Co-authored over 20 peer-reviewed journal articles, book chapters, and oral presentations
  • Principal Investigator for a 5-year NIH-funded basic science research grant
  • Guest Lecturer/Invited Speaker for esteemed organizations, including National Counsel for Negro Women and Women’s Chamber of Commerce
  • Featured guest on WKMG Orlando “Ask A Doctor” segments on News 6 at Nine

Personal Interests: Outside of his medical endeavors, Dr. Lee relishes travel, culinary exploration, and cherished moments with his family. As an active member of the Alpha Phi

Areas treated: Elbow, Foot & Ankle, Hand & Wrist, Hip, Knee, Shoulder

Areas Treated

Cervical Spine (Not Upper Cervical or CCI)*, Elbow, Foot & Ankle, Hand & Wrist, Hip, Knee, Lumbar Spine, Shoulder, Thoracic Spine

*This provider is NOT authorized by Regenexx to treat the C0-C1 or C1-C2 levels of the neck or CCI (craniocervical instability).

Request an Appointment

The text option is to provide you with quicker communication. Regenexx is committed to your privacy.

Please note our procedures are only covered by self-funded health plans at this time.

We do not sell, or share your information to third party vendors.

By submitting the form you agree that you’ve read and consent to our Privacy Policy. We may use email, phone, or other electronic means to communicate information about Regenexx.

We will provide information to help you decide whether you want to schedule an evaluation with a Regenexx Physician.

Insurance typically covers evaluations and diagnostic testing (if recommended). Most insurance plans currently do not cover Regenexx Procedures.