Today, in recognition of National Doctors’ Day, we proudly shine a spotlight on the dedicated team of physicians at the Advanced Orthopedics and Sports Medicine Institute (AOSMI). These physicians bring a deep commitment to patient care, innovation, and excellence in musculoskeletal care and medicine.
Whether it’s guiding patients through recovery, performing complex surgeries, or providing thoughtful, personalized care, our doctors play a critical role in improving lives and restoring mobility.
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Dr. Michael J. Greller, MD, MBA, CPE, FAAOS
Dr. Greller is a board-certified orthopedic surgeon with fellowship training in sports medicine. He specializes in minimally invasive surgery of the shoulder, knee, hip, and ankle, incorporating arthroscopy and robotic-assisted techniques to support improved recovery and mobility.
Dr. Alan S. Nasar, MD, FAAOS
Dr. Nasar is fellowship-trained in joint replacement surgery and performs minimally invasive total joint replacements, complex revision surgeries, and arthroscopy. His engineering background supports a comprehensive approach to joint design and biomechanics.
Dr. Gerardo Goldberger, DO, FAOAO
Board-certified in orthopedic surgery, Dr. Goldberger is known for treating endurance athletes and active individuals. With a dual foundation in orthopedic medicine and physical education, he approaches care with a strong understanding of movement and performance.
Dr. Stacey Gallacher, MD, FAAOS
Dr. Gallacher specializes in shoulder and elbow surgery and is fellowship-trained in upper extremity procedures. She uses arthroscopic and minimally invasive techniques to support a return to activity for patients of all ages.
Dr. Eric Buxbaum, DO
Dr. Buxbaum is fellowship-trained in hip and knee replacement, offering minimally invasive joint replacements and complex revisions. He focuses on restoring mobility and function while aiming to minimize recovery time.
Dr. Justin Elkrief, DO
Fellowship-trained in orthopedic spine surgery, Dr. Elkrief treats herniated discs, scoliosis, spinal stenosis, and degenerative spine disorders, with a focus on motion preservation and minimally invasive surgical options.
Dr. Garret L. Sobol, MD
Dr. Sobol is board-certified and fellowship-trained in sports medicine, specializing in arthroscopic procedures for treating ligament injuries, cartilage damage, and joint instability.
Dr. Edward J. Armbruster, DO, MBA
Dr. Armbruster is a fellowship-trained hand and upper extremity surgeon treating injuries and chronic conditions affecting the hand, wrist, and elbow, with both surgical and conservative methods.
Dr. Joseph Tauro, MD
Dr. Tauro is widely recognized for pioneering work in arthroscopic surgery and shoulder repair. He continues to advance surgical techniques that improve outcomes in orthopedic sports medicine.
Dr. John S. Georgy, MD, MBA
Dr. Georgy is fellowship-trained in pain management, using a multidisciplinary approach to address chronic pain, spinal conditions, and joint issues with customized treatment plans.
Dr. Ali Valimahomed, MD, FAAPMR
Board-certified in pain medicine and physical medicine & rehabilitation, Dr. Valimahomed offers non-surgical, minimally invasive treatments for musculoskeletal conditions. He completed his fellowship at Harvard.
Dr. Thomas A. Del Guercio, MD
Dr. Del Guercio provides non-invasive pain management and is board-certified in both pain medicine and rehabilitation medicine. He develops individualized care plans for patients with chronic pain.
Dr. Alison DeWaters, DPM, FACFAS
Dr. DeWaters is a podiatric foot and ankle surgeon with board certification. Her services include diabetic foot care, ulcer management, orthotics, and surgical correction of foot deformities.
Dr. Wesley Nesbit, DPM
Dr. Nesbit is a podiatric physician and surgeon who treats conditions ranging from bunions and heel pain to traumatic fractures, using both surgical and conservative treatment options.
Dr. Arth Patel, MD, MPH
Dr. Patel is board-certified in family medicine and primary care sports medicine. He focuses on non-surgical musculoskeletal care, including injury prevention, rehabilitation, and return-to-play decisions.
As we celebrate National Doctors’ Day, we extend heartfelt thanks to each of these physicians for their dedication, compassion, and contributions to the field of orthopedic care.
