
With you in mind.
Our Surgeons


Benjamin E. Stein, MD
Benjamin E. Stein, MD is an orthopaedic surgeon specializing in complex reconstructive surgery of the foot and ankle. He is based in Washington, DC with the Centers for Advanced Orthopaedics and has been recognized for consecutive years by Washingtonian Magazine as a ‘Top Doctor’ in the region. Dr. Stein received his undergraduate and medical degrees from the George Washington University with distinction. He completed his orthopaedic residency at the Johns Hopkins Hospital, followed by a Foot and Ankle reconstruction fellowship at Union Memorial Hospital in Baltimore. He is active in education and research and has presented at numerous national and international meetings, published manuscripts, and book chapters on the management of complex foot and ankle injuries. He maintains an appointment as an Assistant Professor of Orthopaedic Surgery at Johns Hopkins University and is an active member of the American Orthopaedic Foot and Ankle Society (AOFAS). He currently serves as the President and CEO of Capital Orthopaedic Surgery Center (COSC).


Gautam Siram, MD
Gautam Siram, MD is an orthopaedic surgeon specializing in adult reconstruction and complex hip and knee replacement surgery. He is based in Washington, DC with the Centers for Advanced Orthopaedics and has been recognized for consecutive years by Washingtonian Magazine as a ‘Top Doctor’ in the region. He received his undergraduate degree from the University of Maryland and his medical degree from the Mount Sinai School of Medicine. He completed his orthopaedic surgery residency at Howard University followed by fellowship training in adult reconstruction and total joint replacement at the Anderson Orthopedic Clinic. His surgical interests include minimally invasive partial and total knee joint replacement surgery using both standard and patient specific, custom instrumentation, and the muscle sparing anterior approach for hip replacement. He has lectured and instructed at numerous surgeon education courses throughout the country focusing on advanced and complex techniques for anterior hip replacement. He is an active member of the American Association of Hip and Knee Surgeons (AAHKS) and active teaching faculty member of the George Washington University. He currently serves as a board of managers member of Capital Orthopaedic Surgery Center (COSC) and the Co-Director of the Joint Replacement Program.


Randall S. Peyton, MD
Randall S. Peyton, MD is an orthopaedic surgeon specializing in adult reconstruction and complex hip and knee replacement surgery. He is based in Northern Virginia with the Arthritis & Sports Clinic which he founded and continues to serve as its President and CEO. He has been recognized for consecutive years by Washingtonian Magazine as a ‘Top Doctor’ in the region. Dr. Peyton obtained his medical degree from the Medical College of Virginia before completing his residency in Orthopaedic Surgery at the Johns Hopkins Hospital. He then completed his fellowship training in adult reconstruction and total joint replacement at the Rothman Institute of the Thomas Jefferson University in Philadelphia. He has lectured and instructed at numerous surgeon education courses throughout the country focusing on relevant concepts and advanced techniques for hip replacement, total knee replacement, and ACL repair surgeries. He is an active member of the American Association of Hip and Knee Surgeons (AAHKS) and continues to actively train future orthopaedic surgeons. He currently serves as a board of managers member of Capital Orthopaedic Surgery Center (COSC) and the Co-Director of the Joint Replacement Program.


Scott C. Faucett, MD, MS
Scott C. Faucett, MD, MS is an orthopaedic Sports medicine surgeon based in Washington, DC with the Centers for Advanced Orthopaedics. His clinical practice focuses on complex knee and hip surgery. Dr. Faucett received his undergraduate degree from Middlebury College and medical degree from Dartmouth College. He completed his orthopaedic surgery residency at Dartmouth, followed by a Sports Medicine fellowship at the Steadman Clinic. He is a team doctor for the George Washington University Athletic Department, and numerous high-schools, as well as a pool physician for the United States Ski & Snowboard teams. He has presented at numerous international meetings, published manuscripts, and book chapters on the management of complex meniscus injuries. He serves on several committees with AOSSM, and ISAKOS as well as directs the research efforts at the Centers for Advanced Orthopaedics Research Foundation. He currently serves as the Medical Director of Capital Orthopaedic Surgery Center (COSC).


Matthew H. Griffith, MD
Matthew H. Griffith, MD is an orthopedic surgeon specializing in sports medicine with expertise in minimally invasive and arthroscopic procedures of the shoulder, elbow and knee as well as reconstructive surgery including total shoulder and reverse shoulder replacements. His is based in Northern Virginia and is partner with the Arthritis & Sports Clinic. Dr. Griffith received his undergraduate degree from Duke followed by his M.D. from the University of Oklahoma. He completed his orthopaedic surgery residency at the Hospital for Special Surgery followed by fellowship training in sports medicine and shoulder surgery at Massachusetts General Hospital (Harvard University). He has previously served as an assistant team physician for the New England Patriots, Boston Red Sox and Boston Bruins and is the current team physician for the Potomac Falls Panthers and Park View Patriots high school football teams.


Noah M. Raizman, MD
Noah M. Raizman, MD is an orthopaedic surgeon who specializes in hand, elbow and shoulder surgery as well as peripheral nerve reconstruction. He is based in Washington, DC with the Centers for Advanced Orthopaedics and has been recognized for consecutive years by Washingtonian Magazine as a ‘Top Doctor’ in the region. Dr. Raizman received his undergraduate degree from Brown University and medical degree from Columbia University. He completed his orthopaedic residency at George Washington University, followed by a Hand and Upper Extremity fellowship at the Cleveland Clinic. Elected as a Young Leader of the American Society for Surgery of the Hand (ASSH), he is a frequent national lecturer on shoulder and elbow reconstruction and hand surgery. He currently serves as Chair of the ASSH Evidence-Based Practice Committee, member of the ASSH Ethics and Professionalism Committee and member of the AAOS Evidence-Based Quality and Value Committee where he reviews and helps establish clinical practice guidelines for orthopaedic surgery. He has a strong interest in trauma, nerve reconstruction and sports injuries of the upper extremity.


Marc B. Danziger, MD
Marc B. Danziger, MD is an orthopaedic surgeon specializing in sports medicine and shoulder and elbow surgery. He is based in Washington, DC with the Centers for Advanced Orthopaedics and has been recognized for consecutive years by Washingtonian Magazine as a ‘Top Doctor’ in the region. Dr. Danziger received his undergraduate and medical degrees from Boston University. He remained at Boston University to complete his orthopaedic surgery residency followed by fellowship training in complex sports, shoulder and elbow surgery in Northern Virginia. He has been the head team physician for the Gallaudet University football team and holds faculty appointments at the George Washington University and Georgetown University.


Peter G. Fitzgibbons, MD
Peter G. Fitzgibbons, MD is an orthopaedic surgeon specializing in hand and upper extremity surgery. He is based in Washington, DC with the Centers for Advanced Orthopaedics and has been recognized for consecutive years by Washingtonian Magazine as a ‘Top Doctor’ in the region. Dr. Fitzgibbons received his undergraduate training at Harvard College followed by his medical degree from the combined program at Dartmouth Medical School and Brown Medical School. He continued on to complete his orthopaedic surgery residency at Brown University followed by a fellowship in hand and upper extremity surgery at Harvard University. He has presented at numerous national meetings, published manuscripts, and book chapters on the management of complex hand and upper extremity injuries. He is an active member of the American Society for Surgery of the Hand (ASSH).


Robert A. Sershon, MD
Robert A. Sershon, MD is an orthopaedic surgeon specializing in adult reconstruction and complex hip and knee replacement surgery. He is based in Northern Virginia with the world-renowned Anderson Orthopaedic clinic. He received his undergraduate degree from the Johns Hopkins University. He completed his medical degree and his orthopaedic surgery residency at the Rush University Medical Center followed by fellowship training in adult reconstruction and total joint replacement at the Anderson Orthopedic Clinic. Dr. Sershon specializes in anterior total hip replacement, minimally-invasive partial knee replacement, and rapid-recovery total knee replacement. A nationally respected leader in joint replacement research, Dr. Sershon has published over 80 peer-reviewed papers, book chapters, and abstracts. In his free time, Dr. Sershon enjoys running, spending time outdoors with his family, and refurbishing furniture.


Matthew A. Harb, MD
Matthew A. Harb, MD is an orthopaedic surgeon specializing in adult reconstruction and complex hip and knee replacement surgery. He is based in Washington, DC with the Centers for Advanced Orthopaedics. He received his undergraduate degree and his medical degree from the Louisiana State University. He completed his orthopaedic surgery residency New York City at the State University of New York followed by fellowship training in adult reconstruction and total joint replacement at the University of Virginia. Dr. Harb’s expertise in rapid recovery protocols allow for quick recovery after surgery and excellent outcomes in patients with hip and knee arthritis. After surgery patients can return to their lifestyles and get back to doing the things they love sooner. Dr. Harb performs outpatient joint replacement surgery with many of his patients walking independently and going home the day of surgery.


William R. Volk, MD
William R. Volk, MD, is an orthopaedic Sports medicine surgeon based in Maryland with the Centers for Advanced Orthopaedics. Dr. Volk received his medical degree from The George Washington University. He continued on to complete his orthopaedic surgery residency at George Washington University Hospital, followed by a Sports Medicine fellowship at The UHZ Sports Medicine Institute in Coral Gables, FL, where he served as a Team Physician for the Tampa Bay Buccaneers (NFL), the Miami Dolphins (NFL), and the Florida Panthers (NHL). Prior to joining private practice, Dr. Volk served at Walter Reed National Military Medical Center (WRNMMC) where he held the academic positions of Associate Director for the Orthopaedic Surgery residency program, Assistant Professor of Surgery at the Uniformed Services University of Health Sciences, and Orthopaedic Consultant for The Office of The Attending Physician, treating several members of Congress. Dr. Volk’s clinical interests include injuries of the shoulder, hip, and knee with a special interest in complex hip preservation surgery, including arthroscopic labral repair and reconstruction; shoulder replacements, shoulder instability, and rotator cuff procedures; and knee ligament and cartilage reconstruction.


Oliver N. Schipper, MD
Oliver N. Schipper, MD is an orthopaedic surgeon specializing in complex and minimally-invasive reconstructive surgery of the foot and ankle. He is based in Northern Virginia with the Anderson Orthopaedic Clinic. He completed his medical education at the Georgetown University School of Medicine and attended the University of Chicago for orthopaedic surgery residency. He then completed his orthopaedic foot and ankle surgery training at the OrthoCarolina Foot & Ankle Institute. He is a member of the American Orthopaedic Foot and Ankle Society (AOFAS) and an elected member of the Young Physicians Committee. He has presented both nationally and internationally, including the AOFAS and the American Academy of Orthopaedic Surgeons annual conferences. He has co-authored book chapters and published multiple papers in orthopaedic foot and ankle surgery, with a focus on ankle replacement and minimally invasive foot and ankle surgery. Dr. Schipper teaches and lectures nationally on minimally invasive foot and ankle surgery.
Our Care Team


Sarah Finley, RN
Sarah Finley, BSN, RN, is the Clinical Administrator at Capital Orthopaedic Surgery Center (COSC). She graduated from Frederick College with an associate degree in nursing and later earned her bachelor’s degree in nursing from The College of Notre Dame in Baltimore, MD. With over 25 years of nursing and surgical care experience, Sarah has spent the last 15 years in leadership roles within the ambulatory surgery center setting.
Sarah played a key role in facilitating COSC’s successful accreditation by the Accreditation Association for Ambulatory Health Care (AAAHC), thanks to her exceptional attention to detail and expertise.
Dedicated to delivering an exceptional patient experience, Sarah is patient-driven and compassionate, known for her integrity and calm demeanor. She is deeply committed to a patient-centric approach, ensuring that our patients’ voices are always heard.
Outside of work, Sarah enjoys kayaking, experimenting with new food recipes, relaxing at the beach, listening to music, and spending time outdoors with her family and their three English Mastiff dogs. She leads an active lifestyle, and her family is her pride and joy.


Blanca Clagett, Regional Business Office Manager
Blanca’s passion for office management stems from her love for personal interactions and a commitment to organizational excellence. Before joining Capital Orthopaedic Surgery Center, she worked at the Advanced Surgery Center of Bethesda for 13 years as a Business Office Manager, bringing over 30 years of management experience to her role. Blanca is responsible for implementing best business practices that uphold the corporate culture, vision, and maintain compliance with policies and procedures. She takes great pride in providing education to her staff and enjoys watching them grow professionally.
A Maryland native, Blanca loves the four seasons that this beautiful state offers. In her spare time, she enjoys outdoor activities such as biking and kayaking, especially in places near water, which she considers her “happy place.” Her favorite pastime, however, is spending time with her grandchildren, the “little people” in her life.


Lina Sophia
Lina is a dedicated healthcare professional with over 11 years of experience in the medical field. She currently serves as the Physician Office Liaison and Surgical Coordinator at Capital Orthopaedic Surgery Center, a position she has held since 2020, bringing with her a wealth of knowledge and a passion for patient care. Throughout her career, Lina has been committed to ensuring that patients feel comfortable, confident, and well-informed. Her compassionate approach continues to make a positive impact on the lives of those she serves, helping them feel supported and confident during a pivotal moment in their healthcare journey.
As the Physician Office Liaison, she acts as a vital communication bridge to ensure smooth and efficient operations within the practice, physicians, patients, and office staff. As the Surgical Coordinator, Lina focuses on helping patients navigate the often complex and intimidating process of surgery, ensuring they feel well-prepared and supported every step of the way.
Outside of her professional life, Lina enjoys spending time outdoors. Whether hiking, walking, or simply relaxing outdoors, she treasures the time spent with her dogs and significant other. She enjoys reading, finding both relaxation and inspiration in a good book. Additionally, she has a passion for cooking and baking, often experimenting with new recipes and sharing meals with loved ones. This personal time allows her to recharge and maintain a balanced life, which, in turn, enhances her ability to provide the best care for patients.


Michelle Barillas


Jordan Jennings, RN
Jordan Jennings, RN is our preoperative and recovery nurse manager and a dedicated Registered Nurse with 17 years of experience in the healthcare field. Throughout his career, Jordan has built a diverse skill set, having worked in critical care areas such as the Emergency Department and ICU, before transitioning to his current role in Pre-op and PACU. Known as the “IV Whisperer,” he has earned a reputation for his expertise in obtaining intravenous access with precision and care. Originally from the Upper Peninsula of Michigan, Jordan enjoys the outdoors and is an avid concertgoer. Outside of work, he cherishes time spent with his wife and two children, creating lasting memories together.


Jaime O’Donnell, BSN, RN
Jaime is our Total Joint Nurse Navigator at Capital Orthopaedic Surgery Center (COSC). With over 13 years of healthcare experience and three years as part of the COSC family, Jaime brings a wealth of knowledge and expertise to his role. Born and raised in rural Oklahoma, Jaime has always had a passion for helping others, which led him to a successful career in healthcare. He began his career in Pediatrics, working in Oncology and ICU, before transitioning to adult outpatient services for same-day procedures.
After a rewarding three-year stint as a travel nurse, Jaime moved to Hawaii, where he worked as a Case Manager and later as a Clinical Manager. As a proud military spouse, he relocated to Maryland in 2021, and continues to strive for excellence in providing the best care to every patient he encounters. With his previous experience as a Clinical and Case Manager, Jaime was able to implement a new program for our total joint patients, ensuring the process was easy to follow and that patients felt supported every step of the way.
Jaime takes great pride in his patient care, attention to detail, active listening skills, and offering thoughtful advice. He is thorough in his communication, ensuring that complex medical terminology is easily understood by his patients. Jaime believes all aspects of nursing are essential in the ever-evolving field of medicine.
Jaime’s positive outlook on life is infectious, and he’s known for his sense of humor—he could easily pass as a stand-up comedian! His laughter and upbeat attitude brighten the day for both patients and colleagues alike.
Outside of work, Jaime enjoys spending time with his spouse and their two dogs. Residing in Frederick, Maryland, Jaime and his family take full advantage of the local food scene and the great outdoors.


Mary Venegas, BSN, RN
Mary is our Nurse Navigator at Capital Orthopaedic Surgery Center (COSC). She began her healthcare career as a nursing assistant in a pediatric unit while attending nursing school at Montgomery College, where she earned her Associate Degree in Nursing. Mary later went on to receive her Bachelor of Science in Nursing from the University of Maryland Global Campus.
With over 10 years of experience, Mary has worked in adult intermediate care, pediatric care, and ambulatory surgical services. Known for her compassion and empathy, Mary ensures her patients feel cared for by being readily available to answer any questions and provide the support they need. She has also been instrumental in crafting a streamlined and efficient pre-op process to enhance patient care and overall efficiency.
Her goal is to ensure every patient feels heard, valued, and well-informed throughout their care journey.
Outside of work, Mary enjoys playing golf, expanding her culinary knowledge by trying new dishes, and spending quality time with her family and friends.