About

Elizabeth Yurth, MD, ABPMR, ABAARM, FAARM, FAARFM

Co-Founder & Chief Medical Officer

Dr. Elizabeth Yurth is the Co-Founder and Chief Medical Officer of Boulder Longevity Institute, where she has been providing Tomorrow’s Medicine Today to her clients since 2006. Dr. Yurth obtained her Medical Degree from the University of Southern California Keck School of Medicine and completed her residency at the University of California – Irvine. Along with her 25-plus years as a practicing orthopedist specializing in sports, spine, and regenerative medicine, Dr. Yurth is double-Board Certified in Physical Medicine & Rehabilitation and Anti-Aging/Regenerative Medicine. She has a Stanford-affiliated Fellowship in Sports and Spine Medicine, and a dual-Fellowship in Anti-Aging and Regenerative Medicine (FAARM) and Anti-Aging, Regenerative and Functional Medicine (FAARFM) through the American Academy of Anti-Aging Medicine (A4M). She has also completed a Fellowship in Human Potential and Epigenetic Medicine and is part of the first cohort of providers to receive the A4M National Peptide Certification.

Dr. Yurth has served on the faculty of and lectured nationally for, both A4M and the International Peptide Society (IPS). She is currently a national lecturer and faculty member for the prestigious Seeds Scientific Research and Performance (SSRP) Institute, one of the premier Cellular Medicine research and education institutes in the country, where she obtained her fifth and most recent Fellowship in Cellular and Regenerative Medicine.

Dr. Yurth has completed over 500 hours of Continuing Medical Education (CME) training in the areas of Longevity, Epigenetics, Nutrition, Bioidentical Hormone Replacement Therapy, Regenerative Peptide Treatments, and Regenerative Orthopedic Procedures. As an athlete herself who has dealt with numerous injuries, Dr. Yurth is thrilled to share with her clients all the innovative, life-changing treatments that are on the cutting-edge of medicine.

Emily Williams, PA-C, NASM CPT, CFMP, CPS

Human Optimization Program Provider

After obtaining her Master’s Degree as a Physician Assistant from Elon University, Emily Williams began her career as a PA in Reconstructive Surgery working in the Burn Unit ICU at Swedish Medical Center in Colorado. With a B.S. in Neuroscience from the University of Michigan, she also worked as a Medical Assistant in OBGYN, Cardiology, and Urology. Additionally, Emily is a Certified Functional Medicine Practitioner.

Throughout this journey, Emily experienced frustration with mainstream medicine and found her passion for integrated health. As a certified personal trainer and health and fitness enthusiast herself, she realized that many of the chronic diseases and issues that her patients encountered were easily avoidable with a healthy, optimized lifestyle. Her desire to educate patients on preventative steps, along with her goal to address the root cause of her patients’ issues, led her to obtain her Functional Medicine Practitioner Certification, and ultimately to BLI. Emily holds certification as a Certified Peptide Specialist (CPS) through the Seeds Scientific Research & Performance Institute and is excited to be at the forefront of Cellular Medicine where she can practice “Tomorrow’s Medicine Today”.

Zach Lueders, PA-C, CPS

Orthopedic Care Provider

Born and raised in Glenwood Springs, Colorado, Zach Lueders graduated from University of Colorado Boulder with a Bachelor of Arts in Integrative Physiology. He then went on to complete his Master of Science in Physician Assistant Studies at University of Bridgeport, CT in 2013, followed by a year-long postgraduate residency in Emergency Medicine at the Cook County Hospital Emergency Department in Chicago, Illinois. From 2014 to 2016, Zach practiced orthopedic trauma at Kings County Hospital in Brooklyn, New York, before returning back to his home state and beginning work at The Steadman Clinic in Vail, Colorado. Since then, Zach has spent the last four and a half years working at Boulder Center for Orthopedics and Spine. There he saw patients for a wide variety of orthopedic sports and trauma related injuries, treating them both surgically and non-surgically.

Zach specializes in Orthopedic Sports and Trauma and Emergency Medicine. 

Zach continually works to extend his education and understanding of Cellular Medicine and is a Certified Peptide Specialist (CPS) through the Seeds Scientific Research & Performance Institute.

In his spare time, Zach likes to adventure including through telemark skiing (he served as a volunteer ski patroller for nearly a decade), motorcycling, scuba diving and fly fishing.

Lauren Doop, NCMA, CPS

Medical Assistant & Phlebotomist

Lauren is a National Certified Medical Assistant (NCMA) with an Associate of Science in Pre-Nursing. Before coming to healthcare, Lauren spent 5+ years in customer service roles across several industries. She began working with Dr. Yurth in 2017, where she quickly gained the love and adoration of both Dr. Yurth and her patients. Her attention to detail and organizational skills, combined with her artful handling of patient needs and questions make her an indispensable part of the BLI team. When not starting an IV or helping setup a procedure, Lauren can be found on the back of a motorcycle or practicing line dances while singing along to her favorite country songs.

Kristen Robb, CMA

Medical Assistant & Phlebotomist

Kristen is a Colorado native who graduated from the University of Colorado Boulder with a Bachelor of Arts degree in Integrative Physiology. She continued her education to become a certified medical assistant to get her foot in the door of the medical field, and received her Certified Medical Assistant (CMA) credentials in 2023. Kristen joined BLI as an intern and quickly discovered her love for non traditional and preventive medicine. In her free time, Kristen likes to climb 14ers, ski, travel, and hang out with her dogs.

David Van Bussum

CEO

David is Co-Founder and CEO of BLI. Together with Dr. Yurth, he helped start BLI in 2006 after early exposure to the business of anti-aging medicine through his involvement in a local healthcare startup. Having co-founded nearly a dozen companies prior to BLI, many in the healthcare space, David is always looking for new ways to innovate and change the paradigm of medicine. A Chicago-native turned CU Buff, David spends his spare time watching sports with one of his five children, coming up with extensive analogies, and listening to audio books while hiking Mt. Sanitas.

Courtney Van Bussum

Director of Strategic Relations

With a background in both biomedical engineering and strategy consulting, Courtney gets overly excited about improving things and making processes run better. She can often be found leading a whiteboard brainstorming session or researching cool new softwares or tools. She has a passion for improving healthcare and helping people build cool businesses. As an avid adventure and appetizer enthusiast, Courtney spends her free time tasting tapas while on weekend trips and running half marathons as part of her goal to run a half marathon in all 50 states.

Jessica Graziano, NCMA

Clinical Operations Coordinator

Jess is a native of Boulder, CO. She attended the University of Colorado where she got a BA in Communications. After college she worked as a flight attendant, where she soon realized there is no place better to live than Boulder. She returned to Boulder and got a job with a local pharma company, working for 15 years in HR/Logistics/Corporate Communications. After the company closed their Colorado operations, and her mother passed away from cancer, Jess realized she wanted to be closer to the patients, so she went back to school and got certified as a Medical Assistant. Additionally, she trained and got certified as an End-of-Life Doula.

Jess enjoys spending time with her two kids, listening to books on tape, watching home improvement shows, and trying new libations on outdoor patios. Her favorite thing to do is make people laugh. If you see her in public and she doesn’t recognize you, it could be her identical twin sister!

Tracey Bastic

COO – Clinical

Tracey is our Chief of Operations at BLI. Her passion lies in supporting others to spread the word in preventive health and properly nourishing the body. She has a committed enthusiasm for implementing innovative processes to help facilitate and streamline operational objectives with the ever-changing needs in healthcare. Recently relocated from Tampa, she enjoys spending time taking in new sights and being active through DIY projects, paddleboarding, hiking with her pup, attending concerts, or dancing the night away.