Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Sees Patients At: Bel Air, Towson-SJMC, and Westminster, MD
Andre Biuckians, MD, FACS, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC. He provides a variety of vascular services to patients in Bel Air and Towson-SJMC, Maryland.
Dr. Biuckians joined the team at Vascular Surgery Associates in 2008 and is a graduate of The George Washington University in Washington, DC. He received a Master of Public Health from Boston University in Massachusetts and a Doctor of Medicine from the University of Massachusetts Medical School in Worcester. He completed his surgical residency at Beth Israel Deaconess Medical Center, the teaching hospital of Harvard Medical School, and he pursued a vascular fellowship at Eastern Virginia Medical School in Norfolk.
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 currently serves as the director of the vascular lab at VSA and the division chief of vascular surgery at the University of Maryland St. Joseph Medical Center.
Sees Patients At: Bel Air, Elkton, and Westminster, MD
Richard Bafford, MD, FACS, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC, serving patients in Bel Air and Elkton, Maryland. Dr. Bafford has been with the practice since 2013.
Dr. Bafford was born and raised in the Baltimore metropolitan area. He is a graduate of Loyola University New Orleans and received a Master of Science in Public Health from Tulane University School of Public Health and Tropical Medicine in New Orleans, Louisiana.
Afterward, he completed a doctor of medicine from Tulane University School of Medicine. His surgical residency and vascular surgery fellowship were completed at the Brigham and Women’s Hospital, a teaching affiliate of Harvard Medical School, in Boston, Massachusetts.
Dr. Bafford 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.
Sees Patients At: Columbia, Ellicott City, and Towson-GBMC, MD
Michael Osgood, MD, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC. Dr. Osgood sees patients in our Ellicott City, Greater Baltimore Medical Center, and Severna Park offices. Dr. Osgood is currently the Chief of Vascular Surgery at Greater Baltimore Medical Center in Towson, Maryland. He joined the practice in 2017.
Dr. Osgood received a Bachelor of Science at Davidson College in North Carolina. Dr. Osgood then received his Doctor of Medicine from Emory University in Atlanta, Georgia. Dr. Osgood then completed his surgical residency at Vanderbilt University Medical Center in Nashville, Tennessee, where he also completed a research fellowship in vascular surgery. Dr. Osgood then completed a vascular surgery fellowship at The Johns Hopkins Hospital in Baltimore, Maryland. During his residency and fellowship, Dr. Osgood presented research in several national and regional meetings.
Throughout his career, Dr. Osgood 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 is board certified to practice vascular surgery by the American Board of Surgery. Dr. Osgood is also a Certified Wound Specialist Physician by the American Board of Wound Management. In addition, he holds the Registered Provider in Vascular Interpretation (RPVI) certificate.
Sees Patients At: Bel Air, Elkton, and Towson-SJMC, MD
Donald Hahn, MD, is a board-certified vascular surgeon who joined Vascular Surgery Associates, LLC, in 2019. He provides a wide range of vascular services to patients in Bel Air, Elkton, and Towson-SJMC, Maryland.
A Baltimore native, Dr. Hahn 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 in Morgantown. 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, North Carolina.
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 community with whom he grew up.
Sees Patients At: Columbia, Ellicott City, Pikesville, and Westminster MD
Yi Zhou, MD, FACS, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC, in Columbia, Ellicott City, and Pikesville, Maryland,. Dr. Zhou aims to provide high-quality and individualized care to his patients.
Born and raised in China, Dr. Zhou moved to the United States to pursue his education. He completed his college education in Kentucky.
Dr. Zhou obtained his medical degree from SUNY Upstate Medical University in Syracuse, New York. Followed by general surgery residency training at Albany Medical Center (Albany Med) in Albany, New York. He then pursued a two-year vascular surgery fellowship at Geisinger Medical Center in Danville, Pennsylvania.
During his residency and fellowship training, Dr. Zhou has given several national and regional presentations on aneurysm disease and mesenteric disease. He has also co-authored multiple clinical papers in the field of vascular surgery. Following his fellowship Dr. Zhou was on staff at the Wellspan Hospital in York, Pennsylvania, for four years.
Dr. Zhou is double board-certified in general surgery and vascular surgery. He is a Fellow of the American College of Surgeons (FACS) and holds a certificate as a Registered Provider in Vascular Interpretation.
Apart from taking care of his patients, Dr. Zhou enjoys classical music and watching motor racing.
Sees Patients At: Elkton, Towson-GBMC, and Belair, MD
Clinton Protack, MD, PhD, is a board-certified vascular surgeon who joined Vascular Surgery Associates, LLC, in 2019. He is proud to provide exceptional care to patients in Baltimore, Ellicott City, Pikesville, Towson-GBMC, and Westminster, Maryland.
He completed his undergraduate work at Lehigh University and received his Doctor of Medicine from the University of Rochester School of Medicine and Dentistry in New York. His surgical residency was completed at Yale-New Haven Hospital in Connecticut. At Yale University, Dr. Protack earned his PhD while investigating AV fistula maturation in the vascular biology and therapeutics program. He then proceeded to 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 both General Surgery and Vascular Surgery.
Dr. Protack is currently accepting new patients and is excited to partner with them in their health care journey. He welcomes them to Vascular Surgery Associates, LLC, and encourages them to schedule an appointment.
Sees Patients At: Bel Air, Pikesville, Elkton, Westminster, and Towson-GBMC, MD
P. Andrew Rivera, MD, RPVI, is a board-certified vascular Surgeon who joined Vascular Surgery Associates, LLC, in 2022. A Texas native, he completed his undergraduate studies in Music Composition at Baylor University and obtained a Master's degree in Music Composition from the University of North Texas.
Dr. Rivera then received his Medical Doctorate from the University of Texas McGovern Medical School in Houston, Texas and stayed on as a general surgery intern. His surgical residency was completed at the University of Tennessee Health Science Center at Nashville, where he gained experience in general and vascular surgery.
Subsequently, he completed a vascular surgery fellowship at Ochsner Health in New Orleans, Louisiana. There Dr. Rivera gained considerable experience in treating patients with end-stage renal disease, peripheral vascular disease, cerebrovascular disease, and complex aneurysm disease with both open and endovascular techniques.
Dr. Rivera has performed research in outcomes of cerebrovascular interventions using machine learning, and has won the SAVS Founders Award in 2022.
Rebekah Kim, MD, FACS, FASCRS, is a board-certified colon and rectal surgeon at Fairfax Colon & Rectal Surgery, PC.
Raised in the greater New York City area, Dr. Kim’s interest in surgery began when she watched her sister undergo multiple procedures as a child. Her family’s trust in the surgeon that cared for her sister was the catalyst that pushed Dr. Kim into medicine. A longtime cellist and pianist, Dr. Kim’s discipline and attention to detail have made her an excellent colorectal surgeon.
After graduating magna cum laude from the College of New Jersey in Ewing Township, New Jersey, where she earned a Bachelor of Science in Biology, Dr. Kim earned her medical doctorate from the prestigious Dartmouth Medical School in Hanover, New Hampshire.
Dr. Kim later completed her surgical residency at Columbia University, St. Luke's-Roosevelt Hospital, in New York City, which drew her toward minimally invasive techniques, such as laparoscopy and robotic surgery. Her interests include the surgical intervention of anal cancer, rectal cancer, anal pain, and other conditions that affect the digestive tract.
Dr. Kim is a fellow of the American College of Surgeons and the American Society of Colon & Rectal Surgeons. She is also a member of the Pan African Academy of Christian Surgeons (PAACS) and has helped train surgeons in Africa. She currently serves on the executive board of the Korean-American Medical Society of D.C. Maryland, and Virginia.
Fluent in English, Spanish, and Korean, Dr. Kim capably serves patients from all backgrounds. In her spare time, she still enjoys playing the piano and the cello.
John Tillou, MD, is a board-certified colon and rectal surgeon at Fairfax Colon & Rectal Surgery, PC. He has wanted to be a surgeon since undergoing an operation in high school.
A native of Norfolk, Virginia, Dr. Tillou received his Bachelor of Science in Chemistry at the University of Utah in Salt Lake City, Utah, where he made the Dean’s List, coached high school baseball, worked in a pathology lab, and volunteered at a free medical clinic.
During his undergraduate studies, he earned the Bioscience Undergraduate Research Mini-grant and received the Comprehensive Chemistry Award and Undergraduate Research Scholar award.
Dr. Tillou eventually returned home to attend medical school at the University of Virginia School of Medicine in Charlottesville, Virginia, where he received the Dr. Graham Clark Scholarship and the Charles & Bernice McKay Scholarship.
After graduation, Dr. Tillou completed his general surgery residency at Beth Israel Deaconess Medical Center, a teaching hospital of Harvard Medical School in Boston, Massachusetts. He completed an additional colorectal surgery fellowship at MedStar Washington Hospital Center in Washington, D.C.
While completing his training, Dr. Tillou co-authored several book chapters and papers. He also received the highest score on the annual colorectal training exam.
Dr. Tillou has undergone advanced training in minimally invasive, robotic, and transanal colon and rectal surgery techniques. He has a particular interest in the treatment and management of colon cancer, anal pain, and anal cancer.
In addition, Dr. Tillou holds many professional affiliations, including the American Society of Colon & Rectal Surgeons, American College of Surgeons, Medical Society of Virginia, and Chesapeake Colorectal Society.
Outside of work, Dr. Tillou enjoys hiking, skiing, playing guitar, and spending time with his family.
“Both Dr Tillou and his assistant were great. They both made an unpleasant exam and procedure as comfortable as possible. Dr Tillou was great at explaining everything before, during and after and what to expect and look out for and why. Front desk person was great too. I would definitely highly recommend Dr Tillou and his team.”
Kimberly Matzie, MD, FACS, FASCRS, is a board-certified colon and rectal surgeon at Fairfax Colon & Rectal Surgery, PC.
Dr. Matzie was born and raised in Granby, Connecticut. She decided to pursue a career in medicine after undergoing an operation in her freshman year of college. The procedure went well, but the surgeon didn’t have the best bedside manner, and no one on the surgical team explained the process or what to expect during recovery.
Dr. Matzie left the hospital inspired and committed to making interactions with her patients both positive and informative. After earning her undergraduate degree at Harvard College in Cambridge, Massachusetts, Dr. Matzie enrolled at the Perelman School of Medicine at the University of Pennsylvania in Philadelphia.
There, she earned her Doctor of Medicine before completing a residency in general surgery at Brigham & Women’s Hospital in Boston. While there, Dr. Matzie also completed fellowships in clinical research, surgical care, and critical care.
Before entering private practice, Dr. Matzie completed fellowship training in colon and rectal surgery at Cleveland Clinic Florida in Weston. She received extensive tutelage in advanced laparoscopy for small bowel, colon, and rectal surgeries.
As a colon and rectal surgeon, Dr. Matzie has special interests in Transanal Endoscopic Microsurgery (TEM), a minimally invasive approach to removing large rectal polyps and early cancers not responsive to colonoscopy excision or other traditional techniques.
When she isn’t at work, Dr. Matzie enjoys spending time with her husband, Chris, and their two daughters.
Sees Patients At: Baltimore, Pikesville, and Towson-GBMC, MD
Peter Mackrell, MD, FACS, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC, serving patients in Baltimore, Pikesville, and Towson-GBMC, Maryland. Dr. Mackrell joined the practice in 2003.
He completed his undergraduate work at Princeton University in New Jersey and graduated from Georgetown University School of Medicine in Washington, DC. Dr. Mackrell completed his surgical residency at Weill Cornell Medicine in New York City and vascular surgical fellowship at Greenville Memorial Hospital in South Carolina. During his training, he was the co-investigator of four clinical trials.
Dr. Mackrell has been voted a “Top Doctor” by Baltimore Magazine eight 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 Report lists 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.
Sees Patients At: Columbia, Ellicott City, and Towson-GBMC, MD
Michael Osgood, MD, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC. Dr. Osgood sees patients in our Ellicott City, Greater Baltimore Medical Center, and Severna Park offices. Dr. Osgood is currently the Chief of Vascular Surgery at Greater Baltimore Medical Center in Towson, Maryland. He joined the practice in 2017.
Dr. Osgood received a Bachelor of Science at Davidson College in North Carolina. Dr. Osgood then received his Doctor of Medicine from Emory University in Atlanta, Georgia. Dr. Osgood then completed his surgical residency at Vanderbilt University Medical Center in Nashville, Tennessee, where he also completed a research fellowship in vascular surgery. Dr. Osgood then completed a vascular surgery fellowship at The Johns Hopkins Hospital in Baltimore, Maryland. During his residency and fellowship, Dr. Osgood presented research in several national and regional meetings.
Throughout his career, Dr. Osgood 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 is board certified to practice vascular surgery by the American Board of Surgery. Dr. Osgood is also a Certified Wound Specialist Physician by the American Board of Wound Management. In addition, he holds the Registered Provider in Vascular Interpretation (RPVI) certificate.
Sees Patients At: Bel Air, Pikesville, Elkton, Westminster, and Towson-GBMC, MD
P. Andrew Rivera, MD, RPVI, is a board-certified vascular Surgeon who joined Vascular Surgery Associates, LLC, in 2022. A Texas native, he completed his undergraduate studies in Music Composition at Baylor University and obtained a Master's degree in Music Composition from the University of North Texas.
Dr. Rivera then received his Medical Doctorate from the University of Texas McGovern Medical School in Houston, Texas and stayed on as a general surgery intern. His surgical residency was completed at the University of Tennessee Health Science Center at Nashville, where he gained experience in general and vascular surgery.
Subsequently, he completed a vascular surgery fellowship at Ochsner Health in New Orleans, Louisiana. There Dr. Rivera gained considerable experience in treating patients with end-stage renal disease, peripheral vascular disease, cerebrovascular disease, and complex aneurysm disease with both open and endovascular techniques.
Dr. Rivera has performed research in outcomes of cerebrovascular interventions using machine learning, and has won the SAVS Founders Award in 2022.
Sees Patients At: Columbia, Ellicott City, Pikesville, and Westminster MD
Yi Zhou, MD, FACS, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC, in Columbia, Ellicott City, and Pikesville, Maryland,. Dr. Zhou aims to provide high-quality and individualized care to his patients.
Born and raised in China, Dr. Zhou moved to the United States to pursue his education. He completed his college education in Kentucky.
Dr. Zhou obtained his medical degree from SUNY Upstate Medical University in Syracuse, New York. Followed by general surgery residency training at Albany Medical Center (Albany Med) in Albany, New York. He then pursued a two-year vascular surgery fellowship at Geisinger Medical Center in Danville, Pennsylvania.
During his residency and fellowship training, Dr. Zhou has given several national and regional presentations on aneurysm disease and mesenteric disease. He has also co-authored multiple clinical papers in the field of vascular surgery. Following his fellowship Dr. Zhou was on staff at the Wellspan Hospital in York, Pennsylvania, for four years.
Dr. Zhou is double board-certified in general surgery and vascular surgery. He is a Fellow of the American College of Surgeons (FACS) and holds a certificate as a Registered Provider in Vascular Interpretation.
Apart from taking care of his patients, Dr. Zhou enjoys classical music and watching motor racing.
Sees Patients At: Bel Air, Towson-SJMC, and Westminster, MD
Andre Biuckians, MD, FACS, is a board-certified vascular surgeon at Vascular Surgery Associates, LLC. He provides a variety of vascular services to patients in Bel Air and Towson-SJMC, Maryland.
Dr. Biuckians joined the team at Vascular Surgery Associates in 2008 and is a graduate of The George Washington University in Washington, DC. He received a Master of Public Health from Boston University in Massachusetts and a Doctor of Medicine from the University of Massachusetts Medical School in Worcester. He completed his surgical residency at Beth Israel Deaconess Medical Center, the teaching hospital of Harvard Medical School, and he pursued a vascular fellowship at Eastern Virginia Medical School in Norfolk.
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 currently serves as the director of the vascular lab at VSA and the division chief of vascular surgery at the University of Maryland St. Joseph Medical Center.
