Dr. Schneider is the founder and managing partner of Vascular Surgery Associates. He attended medical school at Case Western Reserve University in Cleveland, OH. His internship, residency and surgical fellowship were completed at The Johns Hopkins Hospital, and he served on the teaching faculty for many years. Dr. Schneider is the former Chief of Surgery at Fallston General Hospital, is a Fellow of the American College of Surgeons, currently serves as the Chairman of the Board of the Upper Chesapeake Health System, and is a member of the Board of Directors of the University of Maryland Medical System. He is a Clinical Professor at the University of Maryland School of Medicine, and has authored multiple articles in the field of vascular disease.
Mark Gonze M.D.
Dr. Gonze joined Vascular Surgery Associates in 1999, and is a graduate of the Pennsylvania State University Medical School. He was also a Major in the U.S. Army and was honorably discharged. He completed his residency at Allegheny General Hospital in Pittsburgh, and did a vascular fellowship at the Ochnser Medical Clinic in New Orleans. Dr. Gonze brings to the practice a special interest in endovascular surgery. He is the author of numerous published articles, and has given multiple presentations at national meetings on endovascular aneurysm repair. He continues to serve as a proctor for the endovascular aneurysm repair system for other surgeons. Dr. Gonze is a Fellow of the American College of Surgeons and currently serves as Chairman of the Department of Surgery of the Upper Chesapeake Health System. He is a Clinical Associate Professor of Surgery at the University of Maryland School of Medicine.
Peter Mackrell M.D.
Dr. Mackrell joined Vascular Surgery Associates in 2003. He completed his undergraduate work at Princeton University, and graduated from Georgetown University School of Medicine. Dr. Mackrell did his surgical residency at Cornell University Medical Center and vascular surgical fellowship at Greenville Memorial Hospital in Greenville, SC. During his training, he was the co-investigator of four clinical trials. Dr. Mackrell has been voted a “Top Doctor” by Baltimore magazine 8 times, as well as the “Top Doctor” for Vascular Surgery by Castle Connolly for the Washington, DC, Northern Virginia and Baltimore areas. US News and World Reports has listed him as one of the ‘Top Doctors’ in the United States. He is the Chief, Division of Vascular Surgery at Greater Baltimore Medical Center and Sinai Hospital of Baltimore. He is a member of the Society for Vascular Surgery and is an Assistant Clinical Professor of Surgery at the University of Maryland School of Medicine.
Andre Biuckians M.D.
Dr. Biuckians joined Vascular Surgery Associates in 2008, and is a graduate of The George Washington University. He received a Masters of Public Health from Boston University and a Doctorate of Medicine from University of Massachusetts Medical School. His surgical residency was completed at Beth Israel Deaconess Medical Center, and he performed a vascular fellowship at Eastern Virginia Medical School. Dr. Biuckians has co-authored several publications related to the treatment of Deep Vein Thrombosis, and angioplasty for lower extremity claudication. He is a Fellow of the American College of Surgeons, and is an Assistant Clinical Professor of Surgery at the University of Maryland School of Medicine. He is the director of the vascular lab at VSA and the division chief of vascular surgery at UMSTJ.
Kristian Ulloa M.D.
Dr. Ulloa joined Vascular Surgery Associates in 2011. After earning his undergraduate degree from Emory University, he returned to his home state of New Jersey where he did his medical school training at UMDNJ-New Jersey Medical School. He then came to Maryland to complete his general surgery residency and vascular fellowship at the University of Maryland Medical Center. During his training, Dr. Ulloa presented research at multiple national and regional meetings. He has also authored chapters in vascular surgery texts on endovascular treatment of venous disease as well as the management of peripheral aneurysms.
Carter Freiburg M.D.
Dr. Freiburg joined Vascular Surgery Associates in 2011. He earned his undergraduate degree from Washington University in Saint Louis, followed by a medical degree from the Loyola University Chicago Stritch School of Medicine. He completed his general surgery residency at the University of Vermont/Fletcher Allen Health Care and a vascular surgery fellowship at Yale University. As part of his training at Yale, he studied complex thoracic and abdominal aortic endovascular surgery at the Royal Prince Alfred Hospital in Sydney, Australia. His practice encompasses all aspects of open vascular and endovascular surgeries.
Richard Bafford M.D.
Dr. Bafford joined Vascular Surgery Associates in 2013. He was born and raised in the Baltimore metropolitan area. He is a graduate of Loyola University, New Orleans, and received a Master’s of Science in Public Health from Tulane University School of Public Health and Tropical Medicine. Dr. Bafford then completed a doctorate of medicine from Tulane University School of Medicine. His surgical residency and vascular surgery fellowship were completed at the Brigham and Women’s Hospital, Harvard Medical School, in Boston, Massachusetts. He is the author of multiple scientific and clinical papers in the field of vascular surgery. He is a fellow of the American College of Surgeons and an active member of the Society for Vascular Surgery and the Society for Vascular Ultrasound.
Michael Osgood M.D.
Dr. Osgood joined Vascular Surgery Associates in 2017. He completed his undergraduate work at Davidson College and he received his Doctorate of Medicine from Emory University. His surgical residency was completed at Vanderbilt University Hospital. While at Vanderbilt, Dr. Osgood completed a research fellowship in vascular surgery. He then completed a vascular surgery fellowship at The Johns Hopkins Hospital. During his residency and fellowship, Dr. Osgood presented research in several national and regional meetings. He has authored multiple journal articles and book chapters on diverse subjects, including the endovascular treatment of abdominal aortic aneurysms, venous reconstruction in oncologic surgery, and endovascular carotid artery intervention. Dr. Osgood holds the Registered Provider in Vascular Interpretation (RPVI) certificate and is board certified in vascular surgery.
Micah Girotti M.D., FSVS
Dr. Girotti joined Vascular Surgery Associates in July 2017. He was born and raised in southeastern Virginia, and attended college in South Carolina. He returned to Virginia for medical school and obtained his medical degree from the University of Virginia in 2008. He then underwent a general surgery residency at the University of Michigan in Ann Arbor, and during that time also completed a masters degree in Health and Healthcare Research, during which time he published original research about quality of surgical care and hospital readmissions in vascular surgery. He completed his 7 years of general surgery training, and then went on to Northwestern University in Chicago, Illinois, where he completed a 2 year vascular surgery fellowship, specializing in all aspects of open and endovascular surgery. During his training, he was recognized by medical students, residents, and faculty with multiple teaching awards. He looks forward to serving each and every patient at Vascular Surgery Associates with personalized medical and surgical care, customized to that individual.
Donald Hahn M.D.
Dr. Hahn joined Vascular Surgery Associates in 2019. A Baltimore native, he completed his undergraduate degree in microbiology at the University of Maryland, College Park before obtaining his medical degree from the West Virginia University School of Medicine. He completed his general surgery residency at Union Memorial hospital in Baltimore followed by two years of a vascular surgery fellowship at Carolinas Medical Center in Charlotte, NC. Dr. Hahn has given several national presentations on complex aortic and carotid artery disease. In addition to his vascular surgery specialization, Dr. Hahn is board certified in general surgery and holds a certificate as a Registered Provider in Vascular Interpretation. He is thrilled to return to his hometown and provide excellent care in all aspects of vascular surgery to the people and communities with whom he grew up.
Clinton Protack M.D., Ph.D.
Dr. Protack joined Vascular Surgery Associates in 2019. He completed his undergraduate work at Lehigh University and he received his Doctor of Medicine from the University of Rochester School of Medicine & Dentistry. His surgical residency was completed at Yale-New Haven Hospital. At Yale University, Dr. Protack earned his PhD while investigating AV fistula maturation while in the Vascular Biology and Therapeutics program. He then proceeded to a complete a vascular surgery fellowship at the Cleveland Clinic Foundation. Dr. Protack holds the Registered Provider in Vascular Interpretation (RPVI) certificate and is board certified in Surgery.
Justin J. Lewis, D.P.M., FACFAS
Dr. Lewis joined Vascular Surgery Associates in 2021 through a merger with Maryland Foot & Ankle Specialists, which he founded in 2011.
He completed his undergraduate degree at Florida State University, graduating Magna Cum Laude. He went on to earn a Master’s Degree in Physiology from Florida State University and a Master’s Degree in Biomedical Sciences, prior to graduating with his Doctorate in Podiatric Medicine and Surgery from Barry University. Dr. Lewis completed his surgical residency in foot and ankle reconstructive surgery at Westside Regional Medical Center in Plantation, FL, where he received advanced training in flatfoot reconstruction, trauma, sports medicine, limb salvage and wound care. He has been voted a “Top Doctor” in Baltimore Magazine. Dr. Lewis is board certified by the American Board of Foot and Ankle Surgery, a Fellow of the American College of Foot and Ankle Surgeons, and the Division Chief of Podiatry in the Department of Orthopedics at Carroll Hospital.