Meet Our Physicians
Dr. Evelyne Davidson, M.D. – Principal Investigator
Dr. Davidson is a board-eligible internist with over 37 years of experience in patient care and management.
Dr. Davidson has been a Principal Investigator at New Phase since 2012 and has conducted over 90 trials. She has extensive experience in most primary care indications and is actively involved in the care of every clinical research subject.
Dr. Davidson is present in informed consent discussions and personally evaluates all inclusion/exclusion criteria. Unlike most Principal Investigators, Dr. Davidson not only provides oversight, but she also has an active role in the day-to-day coordination of each trial.
Dr. Natalie Clarke, M.D. – Principal Investigator
Dr. Clarke started working at New Phase in March of 2016. She graduated from Penn State University with a Bachelor of Science degree in Biology in 1996. After college, she participated in 2 years of research investigating the effects of various vasodilators on atherosclerotic arteries.
From 1998-2002, she attended The Medical College of Georgia, earning her MD and completed her anesthesiology residency in 2006.
While working at New Phase, Dr. Clarke has been involved in several studies including ones pertaining to diabetic neuropathy, IBC, COPD, asthma, RA and chronic low back pain.
Dr. Amanda Miller, M.D. – Principal Investigator
Prior to joining New Phase, Dr. Miller worked as a hospitalist in Knoxville from 2007-2021 and then as Medical Director at a local veteran’s home. She has also worked in addiction medicine.
Dr. Miller believes that excellent patient care begins with clinical research. After years of direct patient care, she is looking forward to making a difference in a new way.
Throughout her career, Dr. Miller has contributed to a variety of clinical research studies, reflecting her dedication to scientific advancement. Her research involvement includes studies focusing on asthma, cardiovascular disease, chronic obstructive pulmonary disease (COPD), and obesity.
Dr. Sarah Radley, M.D. – Principal Investigator
Dr. Radley started working at New Phase Research and Development in April 2025. Prior to her career in medicine, she worked as a licensed marriage and family therapist. Her biopsychosocial lens of patient care led her to pursue a career in medicine to provide holistic medical care.
She received her medical degree from the Brody School of Medicine at East Carolina University. She then completed residency in Family Medicine at UTHSC in Murfreesboro, TN. She has also served as a primary care physician at the VA.
Dr. Radley has a love of learning and is excited to contribute to the advancement of the medical field through clinical research. She is gaining involvement in several studies regarding obesity, chronic low back pain, COPD and asthma.
Meet our Study Coordination Staff
Our dedicated research site is staffed with 5 full-time Clinical Study Coordinators, a Phlebotomist, and a Dietitian, all working closely with our Physicians to ensure each trial progresses smoothly. The Study Coordination team includes 1 Registered Nurse (RN), 1 Licensed Practical Nurse (LPN), 1 Bachelor of Science degree, and two Certified Clinical Research Coordinators (CCRCs). With over 25 years of combined nursing and research experience, our Coordinators are among the most skilled in the industry.
Each Study Coordinator manages a maximum of three clinical trials. This structure allows them to fully dedicate their time and attention to each study, ensuring participants receive the personalized care and follow-up they deserve. Our Coordinators are also certified in AED, CPR, IV administration, and IATA regulations.
Operating in a collaborative, team-oriented environment, our Coordinators have 24-hour access to both the Principal Investigators and the Clinical Research Director. This strong team dynamic and open communication enable us to deliver consistent, high-quality care to our participants and maintain accurate, detailed data collection throughout each trial.
Meet our Specialists
NPRD has a full-time team of specialists and managers dedicated to maintaining our premier research facility as the best in West Knoxville. Their responsibilities include overseeing day-to-day operations, ensuring compliance with study regulations and documentation, collecting patient information for our growing volunteer database, and serving as the first friendly face participants see when they walk through our doors. This team includes our Office Manager, E-Source Specialist, Regulatory Specialist, and Receptionist.
We also have a dedicated team focused on patient enrollment, along with an in-house marketing and advertising team. Together, they allow New Phase Research & Development to efficiently maximize enrollment and meet the goals set by each sponsor. Our outreach strategies include a wide range of local advertising efforts—such as print, digital targeting, radio, and television. In addition, we’ve established strong referral relationships with multiple medical specialties throughout Knoxville and the surrounding areas. This team is composed of our Recruitment Specialists and Marketing Specialist.
Reviews
“Awesome place to go to do research trials! Staff is very friendly. I like that it is a small business created in Knoxville.”
“I felt so welcomed when I entered this research center from the friendly front office to the medical staff. Building is spotless! Give this place a try if you’re looking to get into a clinical trial.“
“Great screening tools to get the perfect fit between test subject and investigative team. Warm, personable staff.”
“Doctors, Nurses, Staff and even the young lady that takes your blood are pleasant, welcoming and efficient. I was in a 9 month trial and I enjoyed seeing everyone on my monthly visits. The one thing you can be confident in, is that your health is their primary concern.”