Research. Innovation. Progress.

Welcome to the Georgia Nephrology Research Institute. We are a standalone nephrology-specific research facility. We work closely with pharmaceutical, biotech, and device companies to develop new methods for the early detection, prevention, and treatment of kidney disease and its complications.

Georgia Nephrology Research Institute is currently enrolling patients in cutting-edge Phase I – Phase IV clinical trials and device trials.


Our staff is comprised of world-renowned physician-investigators, translational scientists, clinicians, director, and study coordinators.

James Tumlin, MD

James Tumlin, MD

Dr. James Tumlin is the lead principal investigator for Georgia Nephrology Research Institute.

He is a graduate of University of South Florida, and the South Florida College of Medicine. He continued his postgraduate training in internal medicine, clinical nephrology and research nephrology at Emory University in Atlanta GA and subsequently joined the Emory faculty in 1992. Dr. Tumlin ran a successful basic laboratory where he studied continued cellular physiology and non-genomic signaling of steroid hormones. His lab also was the first to examine protein expression in individual nephron segments which he used to study the role of protein phosphatases in the mammalian nephron. In addition to these activities, Dr. Tumlin has evolved into an internationally recognized clinical and translational trialist. He has performed studies in a broad range of nephrology related topics including acute kidney injury (AKI), all stages of chronic kidney disease (CKD), Sepsis and ICU medicine as well as all forms of glomerular disease (GN).

Prior to joining Georgia Nephrology, Dr. Tumlin founded Southeast Renal Research Institute in Chattanooga, TN and continued his academic research efforts with the University of Tennessee College of Medicine. He has continued to be an avid contributor to the nephrology literature and now has over 100 peer reviewed medical publications. In 2008, Dr. Tumlin created NephroNet, Inc; a 501(c)3 national clinical trials consortium that has linked Academic and Private clinical trial sites into a collaborative research organization. Dr. Tumlin is on the editorial board of the of Clinical Journal of the American Society of Nephrology, American Journal of Nephrology and the Journal of the American Society of Nephrology. He is also a widely sought-after consultant for large and small pharmaceutical, biotech and device companies.

William Paxton, MD, PhD

William Paxton, MD, PhD

Bio Coming Soon!

Clinical Trials

Georgia Nephrology Research Institute is a private, standalone research facility. Our mission is to improve the lives of our patients with kidney disease through the research and development of new medicines, diagnostic tools, treatments, and devices.


We partner with our current patients in the form of clinical trials. If you are a patient wanting to participate, you will have access to the newest treatments before they are widely available in the United States. However, there are a few things to keep in mind:

  • Clinical trials are research studies that must be closely monitored. Because of this, they may take more time than traditional treatment programs within a typical nephrology practice.
  • As a participant in a clinical trial, you will be treated with dignity and respect. The ethical and legal codes that govern a medical practice also apply to clinical trials.
  • Please note that you may withdraw from a clinical trial at any time.
  • For more information about participation in a clinical trial, check out the FDA’s website at


Our Research Institute works closely with the clinical practice side of Georgia Nephrology for seamless trial operations within the practice. Georgia Nephrology is the largest nephrology practice in the Georgia, actively managing over 15,000 chronic kidney disease (CKD) patients and 1,300 dialysis patients. Georgia Nephrology providers see patients at 8 office locations and 23 dialysis centers. They have privileges at 10 hospital facilities, and the list continues to grow. Metro Atlanta’s population center of more than 6 million people provides a large base of potential trial participants.

Along with the large patient database, our investigators have access to an on-site infusion center, an on-site anemia management program, and affiliations with a CLIA certified lab and a host of additional ancillary services necessary to conduct complicated phase I-II trials. Our resources include a dedicated -80 freezer and refrigerated storage for investigational product; all cooled storage has an appropriate back-up generator for protection in case of power outage. We have everything needed to implement and facilitate your study from start to finish. Let us handle everything from recruitment to trial execution.

Georgia Nephrology Research Institute


If you'd like more information about our facility, or to participate in a trial, call the Research Institute at 404-645-7150 ext 3024 or send a message using the form below. Someone will contact you within 24 hours.

Contact Us - Research