Our Team


Natalie E. Freeman, PhD, Clinical Research Manager
Dr. Freeman completed her undergraduate degree at the University of California Santa Barbara and her doctorate degree at James H. Quillen College of Medicine, East Tennessee State University in Johnson City, TN.  She completed her fellowship at St. Jude Children’s Research Hospital in Memphis, TN.  Dr. Freeman began her career as an Instructor and Faculty Member at the University of Tennessee Health Science Center in Memphis, TN.  She came to Knoxville in 2011 to direct and manage the Heart Lung Vascular Institute’s Data Management and Research Department at the University of Tennessee Medical Center. Dr. Freeman is also a Clinical Assistant Professor for the Department of Surgery.  Dr. Freeman has extensive experience in clinical and pre-clinical research, bioinformatics, patient data management, and performance improvement.  She is well-versed at leading and training multidisciplinary teams while maintaining high ethical and quality standards. Dr. Freeman’s research interests include oncology (Chemotherapy, Radiation Therapy, and Proton Therapy), Alzheimer’s and dementias, cardiovascular disease, cardiology, vascular disease, pulmonary disease, and diabetes.

Dr. Freeman is aware of the pressing and persistent need to bring promising new drugs and treatment strategies to those in our community. With over 18 years of research experience, Dr. Freeman is dedicated to bringing more research opportunities to our community as well as developing strong collaborations with Physicians who want to provide their patients with more opportunities.  Her team currently collaborates with Provision CARES Proton Therapy (Knoxville and Nashville), Tennessee Cancer Specialists, GenesisNeuro, and New STAT Pulmonary Group.  She and her team are involved in every aspect of study coordination– from the site selection process, budget/contract negotiations, regulatory submission, patient recruitment/enrollment, and data management. Clinical Trials are currently ongoing in oncology (Chemotherapy, Radiation Therapy, and Proton Therapy), geriatric diseases such as dementia, and pulmonology.

Kim Puccio, LPN, Clinical Research Coordinator
Kim Puccio has been a medical care professional for over 20 years.  She received her nursing license in 1993.  She has involved herself in multidisciplinary aspects of patient care including acute care neurology followed by a variety of medical indications including chronic neurology, cardiovascular, digestive systems, endocrine/metabolic, infectious disease, parasites disease, musculoskeletal, and respiratory.  For the past 15 years, she has focused on clinical trials from site selection, preparing regulatory documents, patient recruitment/retention, data management, patient care, to study close out.  Kim has been one of the most successful trial coordinators in her field with top enrolling studies both nationally and globally.  She has taken part in many advisory boards throughout the industry and her expert opinion is often sought after by many of her peers. Kim joined the CBR team to help lead trials in Neurology, Pulmonary, and Cancer. She takes pride in creating an exceptional experience for her patients participating in clinical trials.

Nikki Luttrell, MSPH, Clinical Research Coordinator
Nikki Luttrell received her Bachelor of Science and Bachelor of Arts from Virginia Tech in Blacksburg, Virginia. She then attended the University of South Carolina where she obtained her Master of Science in Public Health degree with a concentration in Epidemiology. Nikki has several years of research experience in academia that includes study design, patient recruitment/enrollment, data management, data analysis and study coordination. She has previously worked with various studies with an array of indications including maternal health, hypertension, social psychology, infectious diseases and cancer treatment. Nikki joined the Center for Biomedical Research team to use her education and unique skill set to assist in offering the community new and diverse therapeutic options.

Wil Rivers, BS, Clinical Research Coordinator
Wilton Rivers received his Bachelor of Science degree from American Intercontinental University and is a native of a small town called North, located in Orangeburg County, South Carolina. Wilton has 12 years of clinical research experience that includes: start-up, study design and coordination, regulatory, budgets and contracts, client-facing and closeout. During this period, he has also served as support to a large team of clinicians, investigators, statisticians, economists and systematic reviewers. Over the 12 years in this industry, Wilton has coordinated several Phase II and Phase III studies to include: Nephrology (Anemia, Type II Diabetes, Hyperphosphatemia) Oncology (Non-Small Cell Lung Cancer, Solid Tumor Configuration, Hemophilia A) and Neurology (Migraine). In addition to site level experience, Wilton also has had the pleasure of working for 2 major CRO’s in Research Triangle Park, North Carolina. While there he gained broader clinical research experience, which included CRF tracking/management and in-house monitoring. Wilton is very excited to be a part of the Provision – CBR Team where he will help carry out the vision of this great organization.

Andrew Norman, BS, Clinical Research Coordinator
Andrew Norman is a native of Kingston, Tennessee. He received his Bachelor of Science with a concentration in Statistics from the University of Tennessee (Knoxville). For over 13 years, Andrew worked as a pharmacy technician in the retail sector before moving into the private sector.  He later progressed into hospital pharmacy, specifically pharmacy operational work and IV medication reconstitution.  A change in career led to acquiring a background in clinical research spanning over three years where he assisted in the coordination of several Lou Gehrig’s Disease (ALS), Multiple Sclerosis and Alzheimer’s disease clinical trials.  His statistics background is indicative of his dedication to data collection, data management and data warehousing.  Andrew joined the Center for Biomedical Research to use his education and experience to contribute in the collection and management of quality data to propel proton therapy to the forefront of cancer treatment.

Shannon Stubblefield, BBA, Clinical Research Specialist
Shannon Stubblefield attended Baylor University where she obtained her Bachelor of Business Administration degrees in Computer Information Systems and Quantitative Business Analysis. After graduating, she worked as an information technology consultant for several years in Dallas, Texas. She later moved to Knoxville, Tennessee where her career focused on healthcare, government, and utility industries for domestic and international organizations. Shannon has previous clinical research experience in the field of Neurology, with a special focus on Multiple Sclerosis. She has over nine years of experience in pre-award study activities, regulatory and start-up, financial analysis of contracts and budgets, and study close out. Shannon joined the Center for Biomedical Research to assist with the financial aspects of clinical trial operations and data analysis.

Grace Kesterson, RN, Clinical Research Coordinator
Grace Kesterson attended the University of California at Davis where she earned her Bachelor of Art degree. After a short stint as a federal background investigator for the government and logistics manager she moved to Knoxville where she received her license as a registered nurse (RN). Grace has over 6 years of direct experience in the health care field with the majority of that time focused in the area of research. As a Clinical Research Coordinator, she has led dozens of Phase 1 studies with both the healthy and special populations. Her experience includes coordinating studies addressing diabetes, duchenne muscular dystrophy, cardiovascular disease, angioedema, and Alzheimer’s Disease, just to name a few. Grace joined Center for Biomedical Research to help her community and contribute to a lasting impact in the healthcare field.

Angie Beyersdorf, BS, Clinical Research Coordinator
Angie Beyersdorf received her Bachelor of Science degree from the University of Wisconsin-Stevens Point and is a native of New London, Wisconsin. She moved to East Tennessee in 2017 and has been involved in various aspects of research since then. Angie has experience in many areas of clinical research including study start-up, patient recruitment/retention, study coordination, patient care, data management, and study close out. As a clinical research coordinator, she has worked on several phase II-IV studies with an array of indications including hypertension, asthma, IBS, diabetes, and diabetic neuropathy. Angie joined the Center for Biomedical Research to utilize her passion for research to help advance proton therapy as a leading cancer treatment.

Corporate Office

1400 Dowell Springs Blvd.,
Suite 350, Knoxville, TN 37909
Phone: (865) 934-2670
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Research Office

1415 Old Weisgarber Road,
Suite 200, Knoxville, TN 37909
Phone: (865) 934-2670
Contact Us