Our Team
David G. Mohler, MD
Orthopaedic Oncology Surgeon
Dr. Mohler is an accomplished orthopaedic surgeon specializing in musculo-skeletal tumors and complex trauma. His experience includes more than 12 years of academic, clinical, and research activities. Dr. Mohler is currently Clinical Associate Professor, Division of Orthopaedic Surgery, at Stanford.
An internationally recognized authority in orthopaedic oncology, ballistic injury, and medical operations in unconventional warfare, Dr. Mohler has led international projects for medical charities, as well as for the U.S. and foreign militaries. He has authoried numerous scientific articles in his areas of expertise, and is a frequent lecturer at medical and military conferences around the world.
Dr. Mohler earned his M.D. from Cornell University Medical College in 1983, and B.S. from Stanford University. He pursued his surgical internship at UCLA, and his orthopaedic training at The Hospital For Special Surgery in New York. In 1989, he completed a two-year fellowship in metabolic bone disease and musculo-skeletal tumors at Memorial Sloan-Kettering Cancer Center in New York.
From 1989 through 1995, Dr. Mohler served as the regional Musculo-skeletal Tumor Specialist for Kaiser Permanente, Northern California. Additionally, from 1990 to 1995, he served as a Battalion Surgeon for the 3/12 Special Forces Group (Airborne). After 1995, he served as a Battalion Surgeon for the 426th Civil Affairs Battalion (Foreign Internal Defense/Unconventional Warfare). Dr. Mohler retired with the rank of Major, United States Army (Reserves).
Dr. Mohler is a Fellow of the American Academy of Orthopaedic Surgery, a member of the Orthopaedic Research Society, International Society of Limb Salvage, Special Operations Medical Association, The Connective Tissue Oncology Society, and numerous other professional organizations.
He is an advisor on soft-tissue sarcoma treatment protocols for the National Cancer Care Network, Inc. His basic science research experience includes research on osteogenic and angiogenic growth factors in animal models for Amgen Corporation, Collagen Corporation, and Genentech. He has extensive planning and management experience in medical economic models in the academic, government, and HMO environments.
Dr. Mohler is very active in charitable organizations, including service with the Flying Doctors service in East Africa, the International Medical Corps to treat casualties of the Afghan war, and training of mujihadeen combat medics. Since 1990, he has volunteered with Refugee Relief International, Inc., and now serves on the organization's Board of Directors. Dr. Mohler is a specialist in the Thai-Burma border area, where he conducts humanitarian missions several times per year providing medical assistance to victims in areas of armed conflict. He served on the Board of Directors of Bravekids.org., an internet resource for ill children, their families, and medical personnel.
He is an internationally recognized authority in orthopedic oncology, ballistic injury, and medical operations in unconventional warfare. He also has led international projects for medical charities, as well as for the U.S. and foreign militaries. Dr. Mohler has authored numerous scientific articles in his areas of expertise, and is a frequent lecturer at medical and military conferences around the world.
Raffi S. Avedian, MD
Musculoskeletal Tumor Surgeon
Dr. Raffi S. Avedian is a graduate of Pomona College where he completed his undergraduate studies with honors in Neuroscience. Upon finishing his medical degree from the University of Chicago, Pritzker School of Medicine, Dr. Avedian went on to complete his residency in orthopaedic surgery at the University of California, San Francisco. Dr. Avedian concluded his orthopaedic surgery training with a fellowship in Orthopaedic Oncology and Limb Reconstruction at the University of Chicago.
Dr. Avedian's clinical interests include surgery for bone and soft tissue tumors of the musculoskeletal system including complex limb reconstruction. Dr. Avedian's research focuses on tissue engineering for bone and soft tissue loss, implant development for limb reconstruction and development of intraoperative imaging techniques for limb salvage surgery.
Nancy Brook, RN, MSN
Nancy is a Board Certified Family Nurse Practitioner with more than 13 years of experience caring for patients and their families. She has been affiliated with Stanford Medical Center since 1994 in a variety of specialty areas.
She is involved in all aspects of patient care, and has been working with Dr. David Mohler and the tumor service since 2002. She strives to improve the patient experience and is actively involved in coordination of care.
Nancy received a Bachelor of Arts degree in psychology, and a masters degree in nursing from Vanderbilt University School of Nursing. She is certified by the American Academy of Nurse Practitioners and the American Nurses Credentialling Center.

Rhonda Harris, MA