Paul E. Kraemer, M.D.

Paul E. Kraemer, M.D., is a native of Iowa.  He was educated at Cornell University in New York, The University of Iowa Medical School, and the University of Wisconsin Hospitals and Clinics Orthopaedic Surgery residency program.  He then spent an additional year at Seattle’s Harborview Medical Center/ the University of Washington in a combined orthopaedic and neurosurgical Spine Surgery fellowship.

Dr. Kraemer has a special interest in scoliosis, revision surgery, and minimally invasive techniques.  “My training at both Wisconsin and Harborview emphasized logical careful thinking about some of the most difficult problems affecting the Spine.  The more complex the problem, the more important it is to precisely identify the source of the pain, and design a solution, operative or non-operative, that makes sense.” He practices at Community Hospital, Riverview Hospital, and Indiana University Hospitals, where he serves as assistant professor of Orthopaedic Surgery fellowship director for the spine surgery fellowship, and actively involved in research, resident education, and cross-specialty education of practicing physicians.  He has presented research and taught courses nationally at the American Academy of Orthopaedic Surgeons, the American Association of Neurological Surgeons, and the North American Spine Society, as well as speaking locally on complex spine and diagnostic challenges to the IU departments of medicine, orthopaedics, and neurosurgery.

Dr. Kraemer and his family live in Carmel, where he enjoys time with his wife and daughter, and is an avid golfer and outdoors enthusiast.

Justin Miller, M.D.

Justin W. Miller, M.D. is a highly skilled, board-certified, fellowship trained orthopaedic spine surgeon. Dr. Miller’s fellowship consisted of 18 months of training with world-renowned spine surgeons Rick Sasso, M.D., Thomas Zdeblick, M.D., Paul Anderson, M.D., and Cliff Tribus, M.D.

Dr. Miller specializes in spinal disorders, such as: disc herniations, arthritic/degenerative processes, spinal stenosis, complex pediatric and adult kyphotic and scoliotic deformities, sports-related injuries, spondylolisthesis, myelopathy, infections, trauma, oncology, and revision surgeries. He has interests in minimally invasive spine surgery and cutting-edge spinal stealth navigation techniques, and has undergone extensive training in his field due to the complexity of spinal and neurologic disorders with a goal of providing the highest level of care to his patients.

Dr. Miller is co-investigator on a number of current studies with the Indiana Spine Group. Research interests include degenerative disc disease, infection prevention, lumbar stenosis, and osteoporosis, to mention a few.


Thomas Reilly, M.D.

Thomas Reilly, M.D. specializes in the comprehensive care and spine surgery of patients with spinal and nerve disorders of the neck and back. Dr. Reilly lectures both nationally and internationally, speaking on multiple spine surgery related topics, and has authored / co-authored many articles related to spine surgery.

Kenneth Renkens, M.D.

Kenneth Renkens, M.D. provides treatment for common spine complications in the neck and back, including pinched nerves, herniated discs and degenerative disc disease. He also treats more complex problems such as spine and spinal cord tumors. As a Neurosurgeon who specializes in spinal surgery at Indiana Spine Group, he treats a variety of complications and spinal cord disorders with spinal cord decompressions and/or fusions.

Dr. Renkens received his medical degree from Boston University School of Medicine in Boston, Massachusetts. After an internship in General Surgery at Boston University Hospital, he completed a residency in Neurosurgery at Tufts-New England Medical Center in Boston. Dr. Renkens received additional training in spinal instrumentation in Paris, France.

He is Board Certified in Neurological Surgery by the American Board of Neurological Surgery, a Diplomat of the American Board of Neurological Surgery, and a Clinical Instructor for Orthopaedic Surgery at the Indiana University School of Medicine.

Dr. Renkens’ professional memberships include the American Association of Neurological Surgeons, Fellow of the American College of Surgeons, Congress of Neurological Surgeons, North American Spine Society, and the Indiana State Medical Association.

Rick Sasso, M.D.

Rick Sasso, M.D., is a founding member, and the president of Indiana Spine Group. He is a board-certified orthopaedic surgeon, specializing in spine surgery. Additionally, he is a professor and chief of spine surgery at the Indiana University School of Medicine, Department of Orthopaedic Surgery. Dr. Sasso has dedicated his medical career to the comprehensive treatment and surgery of spinal disorders and abnormalities and is actively involved in spine surgery research including the research and development of spinal implants and techniques of minimally invasive spine surgery, as well as the development of instrumentation technology used to treat spinal disorders.




Joseph Smucker, M.D.

Joseph D. Smucker, M.D. is a fellowship-trained, board certified orthopedic surgeon who provides expertise in the surgical care of spinal disorders.  Dr. Smucker has special training in complex cervical, thoracic, and lumbar surgery, having trained with the top programs in the nation and subsequently practicing in a tertiary setting for almost a decade.  His subspecialty interests include cervical spine conditions, care of spinal injuries in athletes, and spinal navigation technologies.

Dr. Smucker completed his secondary education in Northern Indiana and his undergraduate degree at Goshen College.  He earned his medical degree from Indiana University School of Medicine in Indianapolis and pursued his residency at Case Western Reserve University, where he trained with the late Dr. Henry Bohlman – a world-recognized spinal surgeon who pioneered many of the most commonly used surgical techniques in spinal care.  Following residency he completed an adult spine surgery fellowship at Emory University with Dr. John Heller and Dr. Scott Boden where he refined his skills in the surgical care of complex spinal disorders and honed his research interests.  He began his career at the University of Iowa where he practiced full-time clinical and operative spine care and became a tenured member of the faculty.  During this time he completed numerous research studies as Director of the Bone Healing Research Laboratory.  He returned to Indiana to continue to advance these interests and contribute to the team at Indiana Spine Group.

As an active member of the American Academy of Orthopaedic Surgeons, he has been honored with a term in the Leadership Fellows Program, which recognizes future leaders in the profession of Orthopaedic Surgery.  He is also a member of the North American Spine Society and the prestigious American Orthopaedic Association.  The “Best Doctors in America” program has frequently recognized him due to his tradition of clinical care.  Dr. Smucker has authored numerous manuscripts and textbook chapters and has focused many of his investigations on the science of bone healing and cervical spine motion.  He has collaborated with Dr. Rick Sasso in a number of these investigations.

Full Biography