Our Team

Dr. Sams and Dr. Sullivan are excited to have returned to Decatur, IL and the opportunity to provide state of the art orthopedic care. Dr. Sams was born and raised in Decatur, while Dr. Sullivan lived here while attending Millikin University for his premedical studies. Both have passionately pursued the field of orthopedics and now have the ability to provide this care to the people of Macon County.  Partnering with both DMH and St. Mary's Hospital, they will provide cutting edge care in joint replacement, general orthopedics, fracture care, and sports medicine.  

It is our mission to provide exceptional, compassionate care to our patients. Our goal is to provide the ultimate patient experience so that when patients leave our office, they will feel they were treated professionally with respect and individuality.

Jacob D. Sams, MD

Jacob D. Sams, MD

Dr. Jacob D. Sams is an Orthopedic Surgery Specialist serving Decatur, IL and surrounding areas. He graduated with honors from Southern Illinois University School Of Medicine in 2008.

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Donald N. Sullivan, MD

Donald N. Sullivan, MD

Dr. Donald N. Sullivan is an Orthopedic Surgery Specialist serving Decatur, IL and surrounding areas. He graduated from Southern Illinois University School of Medicine in Springfield, IL.

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Dr. Daniel R. Lygrisse, DO

Dr. Daniel R. Lygrisse, DO

From very early in my training, I knew I wanted to be a hand surgeon. I fell in love with its precision, attention to symmetry as well as structure and function. My focus includes complex elbow, wrist and hand fractures, wrist and hand arthritis, small joint reconstruction, tendon repair and peripheral nerve surgery.

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Christopher M. Graves, MD

Christopher M. Graves, MD

As a spine surgeon, Dr. Graves' interests include treatment of adult and pediatric spinal disorders including scoliosis, complex revision, trauma, and minimally invasive spine surgery.

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Scott M. Bilyeu, MD

Scott M. Bilyeu, MD

Dr. Bilyeu earned his medical doctorate from the University of Illinois, residency at St. Francis Hospital in Indianapolis, and a sports medicine fellowship through Michigan State University.

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Kelsey M. Thacker, NP

Kelsey M. Thacker, NP

Kelsey was inspired to work in orthopedic surgery because of the opportunity to serve her community in a manner that she is passionate about. Her areas of interest include joint replacement and trauma.

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Rachelle A. Parra, PT, CMTPT

Rachelle A. Parra, PT, CMTPT

Rachelle went to Bradley University for her Bachelor of Science in Physical Therapy. She has worked in all settings, but has found outpatient orthopedic rehabilitation to be her favorite.

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