Dr. Andrew T. Assenmacher

Dr. Biermann serves as Director of the Musculoskeletal Oncology Program at the University of Michigan. Her clinical interests include malignant and benign tumors of soft tissue and bone, both primary and metastatic. Her practice includes both adults and children. Dr. Biermann chairs the Multidisciplinary Sarcoma Tumor Board, a collaborative cancer center group including medical and pediatric oncologists, pathologist, diagnostic radiologists, and radiation therapists. The Sarcoma clinic meets weekly. The University of Michigan Sarcoma team engages in patient care, clinical trials, and basic science research. In addition to her regional responsibilities, Dr. Biermann has been active in national committee and administrative work. She chairs the National Comprehensive Cancer Network (NCCN) Bone Tumors Panel. She is past president of the Musculoskeletal Tumor Society (MSTS). She is a member of the American Society of Clinical Oncology (ASCO). She sits on the Orthopaedic Research and Education Foundation (OREF) Grant Board. Her active research program has included more than 87 publications in the areas of musculoskeletal tumors and in the impact of the Internet on patient education. Dr. Biermann is the University of Michigan Medical Director for the Sarcoma Program and the Orthopaedic Surgery Residency Program Director. Dr. Biermann is highly rated in 26 conditions, according to our data. Her clinical expertise encompasses Ewing Sarcoma, Bone Tumor, Chondrosarcoma, Osteosarcoma, and Hip Replacement. Dr. Biermann is board certified in Orthopedic Surgery. Dr. Biermann is currently accepting new patients.

Michelle Caird, M.D. is a Professor and Chair of the Department of Orthopaedic Surgery at Michigan Medicine. She is a busy member of the Division of Pediatric Orthopaedics. She received an engineering degree followed by her medical degree at University of Michigan, where she earned Alpha Omega Alpha honors. She completed her internship and residency in orthopaedic surgery at University of Michigan Health, and fellowship training in Pediatric Orthopaedic Surgery at the Children’s Hospital of Philadelphia.Dr. Caird joined the faculty at University of Michigan Health at the completion of her fellowship. Clinically, she treats multiple orthopaedic conditions faced by children including fractures, spinal deformity, unequal or bowed legs, clubfeet, and complex hip problems in growing children. Her areas of special expertise include treating fractures and spinal deformity in children with osteogenesis imperfecta, spina bifida, and cerebral palsy. In the laboratory she investigates bone healing in these diseases. She is currently a member of the Board of Directors of the Pediatric Orthopaedic Society of North America (POSNA) and in 2012 she was selected to represent POSNA in Northern Europe as one of the POSNA Traveling Fellows, where she studied and taught at major European centers. Dr. Caird is board certified by the American Board of Orthopaedic Surgery, and is a member of the American Academy of Orthopaedic Surgeons, the Scoliosis Research Society, and the Pediatric Orthopaedic Society of North America. Dr. Caird is highly rated in 9 conditions, according to our data. Her clinical expertise encompasses Osteogenesis Imperfecta, Scoliosis, Cerebral Palsy, Spinal Fusion, and Gastrostomy. Dr. Caird is board certified in Orthopedic Surgery. Dr. Caird is currently accepting new patients.

Dr. Geoffrey Siegel is a Michigan native who received his Medical Doctorate Degree at the Detroit Medical Center and his residency in Orthopaedic Surgery at Wayne State University. After finishing his fellowship in Orthopaedic Oncology at Vanderbilt University Medical Center in Nashville, Tennessee, he joined the Department of Orthopaedic Surgery at the University of Michigan as Clinical Assistant Professor.Dr. Siegel's clinical interests are in the treatment of benign and malignant disease, both metastatic as well as primary bone cancer in adults and children. His surgical interests include limb salvage and complex musculoskeletal reconstruction. He enjoys both resident and community physician education in the field of Musculoskeletal Oncology. Dr. Siegel is highly rated in 28 conditions, according to our data. His clinical expertise encompasses Adult Soft Tissue Sarcoma, Bone Tumor, Chondrosarcoma, Leg or Foot Amputation, and Hip Replacement. Dr. Siegel is board certified in Orthopedic Sports Medicine and Orthopedic Surgery. Dr. Siegel is currently accepting new patients.