Dr. Zachary Zimmer is a board certified orthopaedic surgeon and Assistant Professor of Orthopaedic Surgery at The George Washington University School of Medicine and Health Sciences. His surgical specialty focuses on conditions affecting the shoulder and elbow.

After graduating with a degree in molecular biology from Colgate University, Dr. Zimmer earned his medical degree at Stony Brook University School of Medicine where he was inducted into the prestigious Alpha Omega Alpha Medical Honor Society. He completed his orthopaedic surgery residency at the University of Pennsylvania, where he was chosen to be an academic chief resident. He was also awarded the DeForest P. Willard Award for outstanding performance by a senior resident and the Joseph P. Iannotti Award for excellent performance by a senior resident in shoulder surgery.

To further his training, Dr. Zimmer completed a shoulder and elbow surgery fellowship at Massachusetts General Hospital and Harvard Medical School under the mentorship of Dr. Jon JP Warner and Dr. Andrew Jawa, where he learned to treat complex conditions of the shoulder and elbow. During his fellowship year, Dr. Zimmer had the opportunity to travel to Europe and learn from world-renowned surgeons Dr. Pascal Boileau and Dr. Laurant Lafosse.

Dr. Zimmer treats a multitude of shoulder conditions, including rotator cuff injuries, osteoarthritis, shoulder instability, and biceps tendon conditions and performs procedures ranging from arthroscopic procedures to shoulder replacements to complex tendon transfers.

Andreas attended Concordia University Wisconsin and received his bachelor’s degree in Sports Medicine in January 1999 and a Master’s in Physical Therapy in May 2001. Andreas joined Select Medical in May of 2001. He currently works in Austin, TX, and is a center manager of the Angus Road facility.  Andreas completed a 3-year manual therapy residency program through The Institute of Physical Art (IPA). In April of 2006, he completed residency training with Honors and became a Certified Functional Manual Therapist (CFMT). The IPA curriculum focused extensively on manual therapy with an emphasis on soft tissue and joint mobilization and manipulation, proprioceptive neuromuscular facilitation (PNF), motor control, and exercise training.  Andreas became a faculty member for Select Medical’s continuing education department in 2003. Since this time, he has developed and taught numerous courses on a variety of orthopedic physical therapy topics including Exercise Prescription, Soft Tissue Mobilization, Orthopedic post-surgical care, Spinal Therapy, PNF for the Orthopedic Therapist and Instrument Assisted Soft Tissue Mobilization. In 2015 Andreas joined a team of in-patient and out-patient therapists and physicians to co-develop Select Medical’s Revital Cancer Rehabilitation program.   He specifically focused on courses incorporating manual therapy for oncology patients. In addition to his Select Medical faculty position, Andreas treats full time in an orthopedic setting focusing on complex and chronic patients. He developed and led a local mentorship program and frequently guest lectures at Texas State University. In 2007 he received The Dorn Long Outstanding Clinical Educator Award by the Texas Consortium due to his support and education of physical therapy students. In 2022 Andreas was nominated as “Instructor of The Year” for Select Medical Education Department.

Dr. Kugelman is a fellowship-trained orthopaedic surgeon who specializes in hip and knee replacement surgery. He received his medical degree from Geisinger Commonwealth School of Medicine, which is one of the largest regional medical centers in the country. During his time in medical school, he completed an orthopedic research internship at The Hospital for Special Surgery. Dr. Kugelman further pursued orthopedic research during medical school, by performing an orthopedic trauma research fellowship at NYU Langone Health. After graduation from Geisinger, he completed his residency in Orthopedic Surgery at NYU Langone Health.  Following residency, he completed his fellowship in complex adult reconstructive procedures of the hip and knee at the world-renowned Duke University Medical Center. 

His clinical interests include partial and total knee replacement, total hip replacement, robotic joint replacement, complex primary joint replacement, total knee revisions, total hip revisions, joint infections, prosthetic infections, prosthetic fractures, and lower extremity trauma. Dr. Kugelman practices patient-centered medicine and works with individuals through shared decision-making. He practices individualized medicine when evaluating the appropriate surgical and non-surgical management to musculoskeletal problems.

He remains active in research with over 40 peer-reviewed publications and numerous book chapters. He has been part of over 100 poster and podium presentations at the top national orthopedic meetings, including The American Academy of Orthopedic Surgeons and The American Association of Hip and Knee Surgeons. His research interests include improving outcomes following primary and revision joint replacement.

Chris earned his Master’s degree in Physical Therapy in 2008 from D’Youville College in Buffalo, NY.  Upon graduation in his continued pursuit of improving clinical skills, he completed a two year residency and one year fellowship in Orthopedic Manual Physical Therapy through the Ola Grimsby Institute.  While completing his residency and fellowship he also completed course work to receive a Doctorate in Manual Therapy.  He is a board-certified Orthopedic Clinical Specialist through the American Physical Therapy Association. Since completion Chris has been part of the education department with involvement in the COMT program as well as numerous weekend and online offerings.

Erica is the National Director of the Comprehensive Degenerative Joint Disease program at Select Medical. She received her doctorate from the University of Southern California and is a board certified orthopedic specialist.  Erica has a strong interest in the rehabilitation of patients following total joint arthroplasty. She has authored and published several studies and articles on this topic, in addition to giving lectures both nationally and internationally on total knee, total hip arthroplasty, red flag screening and telemedicine. 

Marc D. Chodos, MD is an assistant professor of surgery at the GW School of Medicine & Health Sciences. He was born and raised in Southern California. He graduated from the University of California, Berkeley in 1995 with a double major in history and immunology. While at Berkeley, he received multiple academic honors, including Phi Beta Kappa, junior year.

Dr. Chodos attended medical school at the University of California, Los Angeles as a Regents' Scholar. Following medical school, Dr. Chodos completed a residency in orthopaedic surgery at Johns Hopkins Hospital. After residency, he entered the prestigious Foot and Ankle Fellowship at Union Memorial Hospital in Baltimore with Drs. Lew Schon, Stuart Miller, Greg Guyton, and John Campbell. During fellowship, he won the Johnson and Johnson Orthopaedic Research Award and Travel Grant.

After completing his training, Dr. Chodos practiced in San Diego for 12 years, providing subspecialty foot and ankle orthopaedic care for the Southern California region and beyond. From 2006-2015 he was in private practice, affiliated with Grossmont Orthopaedic Medical Group. He also worked part time at University of California, San Diego training orthopaedic surgery residents and providing subspecialty care. From 2015-2018 he provided subspecialty foot and ankle orthopaedic care with Southern California Permanente Medical Group, and also assisted in training podiatric residents and students. In 2018 Dr. Chodos relocated east, and joined George Washington University.

Dr. Chodos specializes in foot and ankle orthopaedics, both nonoperative and surgical. He has strong interests in sports medicine (including arthroscopy, tendon and ligament repair, and treatment of osteochondral defects), and also foot and ankle reconstruction (including complex deformity and arthritis). He believes that our feet and ankles are the foundation of our body. In caring for them, his goals include restoring function and improving quality of life.

Anil Nandkumar is an Advanced Clinician and board-certified physical therapist at HSS. Anil has experience treating a wide variety of orthopedic and sports clinical cases, including surgical cases, non-surgical cases, and patients coming in as direct access (without a physician referral). Further, Anil has a special interest in working with tennis players and weight lifters due to his many years of experience with playing competitive tennis and various certifications in weight training. He also covers many of the New York Road Runners and TCS Marathon events throughout the year. Anil enjoys working with patients of all ages and he treats a broad spectrum of body regions, and diagnoses.

Matthew Pugliese is a physical therapist working at the Hospital for Special Surgery in New York. He graduated with a doctorate in physical therapy from Ithaca College, completed a fellowship in orthopedic manual physical therapy through Regis University, and a doctorate of science in physical therapy at Texas Tech University. He holds a Board Certification in Orthopedics, teaches in an APTA credentialed orthopedic residency program and is a guest lecturer at Hunter College and Marist College.

Drew Contreras, PT, DPT Dr. Drew Contreras, PT, DPT - received his Master of Physical Therapy from Gannon University in 1998 and his Doctorate of Physical Therapy from the University of North Carolina at Chapel Hill in 2008. He is an APTA board certified Sports Clinical Specialist since 2003. Serving over 20 years on active duty as a career military officer and practicing physical therapist within the US Army & Department of Defense, Drew has served in a number of settings and military units throughout his career before his retirement in 2020. He spent his early career at Ft Benning, GA working in a direct access primary musculoskeletal physical therapy setting evaluating and treating over 5000 soldiers a year in initial entry training and the US Army airborne school. In 2003 he moved on to Ft Bragg, NC where his primary role was supporting the 82nd Airborne Division and various special operations units. His skills were put to work extensively in 2006-2007 during a 15-month continuous deployment during Operation Iraqi Freedom where he was the first physical therapist to serve in sustained combat operations with the 82nd Airborne Division. After returning, Drew moved to Washington DC to work at the Pentagon Health Clinic where he served as the Director of Wellness and Physical Therapy. During this time, he served as a consultant to the White House Medical Unit and was then chosen as a by name selection by President Obama to serve as the first ever full time physical therapist at the White House. There he served as the Physical Therapist to the White House Medical Unit and 44th President of the United States Barack Obama from 2010 until the end of the administration in 2017. During his time in Washington DC, he has worked with a wide range of government officials as well as police and law enforcement agencies. He traveled the world with the patients he served and was able to help keep people functioning in their roles to serve the nation. He transitioned to Fort Belvoir Community Hospital where he used his experience in the clinic as well as mentoring junior clinicians and students of the Interservice Physician Assistant Program. He finished his career returning to Ft Bragg to serve as the Chief of the Physical Performance Service Line / Physical Therapy at Womack AMC - Defense Health Agency. There he oversaw the largest physical therapy clinic in the Department of Defense. After retiring, he returned to the Washington DC area where he established a concierge practice to provide clinical care and consulting. LTC (R) Contreras has served in multiple advisory roles and continues to offer his expertise on numerous panels and committees. He currently works for the American Physical Therapy Association as a member of the senior leadership as the Vice President of Strategic Affairs. There he works to enhance the service and scope of practice of physical therapists working across the country.