Bonnie Lefbom

Bonnie Lefbom

Dr. Bonnie Lefbom is passionate about providing state of the art veterinary cardiology for pets and deeply values the relationships she develops with pet families. Having spent several years as a primary care veterinarian prior to her specialty training, Dr. Lefbom is centered in the practical approach to patient care. She is well aware of the emotional and financial considerations involved in treating her patients and works closely with owners to achieve optimal treatment in every case. She provides continuing education lectures regularly and has several articles published in refereed journals.

Dr. Lefbom’s home life is busy and fun with the Lefbom family zoo – 3 teenage children, 2 spoiled dogs, and 2 very special big orange cats.  She travels to Kenya every year to work with the orphanage she supports through her 501c3, non-profit, FTKI.  In her “spare” time, she loves to play almost anything – tennis, golf and volleyball are favorites along with cheering for local sports teams including her Alma Mater – the Terps!

Dr. Lefbom divides her clinic time between the Hope Center for Advanced Veterinary Medicine in Vienna, VA, the Regional Veterinary Referral Center in Springfield, VA and VCA SouthPaws Veterinary Referral Center in Fairfax, VA.


William Tyrrell

Dr. Bill Tyrrell is a 1992 graduate of the Virginia-Maryland College of Veterinary Medicine at Virginia Tech. After graduation, he spent four years in small animal practice in Northern Virginia, where he became fascinated with cardiology and echocardiography. He then began a cardiology residency program at the Angell Memorial Animal Hospital in Boston, Massachusetts. He completed his residency credentials with Chesapeake Veterinary Cardiology Associates (CVCA) and achieved Diplomate status in the American College of Veterinary Internal Medicine (ACVIM) in the College of Cardiology in 1999. He is now co-owner of CVCA and helps operate their 13 offices throughout Virginia, Maryland, Kentucky and Texas.  Dr. Tyrrell strives to fully educate his clients about the cardiac disease found within their pets. Interactive communication is a very important part of his examination, consultation, and follow-up treatment. 

In February of 2010, he was elected President of the Virginia Veterinary Medical Association and served on its Board of Directors for over 12 years.  He spent two years as Virginia’s alternate delegate to the American Veterinary Medical Association’s House of Delegates. He is a past President of the Northern Virginia Veterinary Medical Association and the Virginia Tech (VMCVM) Veterinary School Alumni Society. He also currently serves as a committee member of the Veterinary Memorial Fund.  This fund exists to help pet owners and families cope with the grief associated with the passing of their loved ones and to raise funds to support scientific investigations which improve the quality of health care available for future generations.  Dr. Tyrrell was awarded the Outstanding Young Alumnus Award in 2003 by the VA Tech Alumni Association.  In 2015, he was recognized by the VVMA as the Distinguished Virginia Veterinarian of 2015.

He has lectured nationally at the ACVIM Forum, VMX/NAVC, AVMA Convention, VVMA Annual meeting and the PVMA Keystone meeting.  He was the chairperson and co-founder for the 2011 inaugural Potomac Regional Veterinary Conference held in Washington, DC, a joint scientific continuing education meeting of the VA, MD, WV and DC veterinary medical associations and has continued its planning committee for the past seven years.  Bill is the past chair of ACVIM Marketing and Communications Committee (2016-2018) and served on the ACVIM Board of Regents during this period as well. This committee’s purpose is to bring awareness to the general public as to how veterinary specialists can help pets live longer, healthier lives in conjunction with the care from their primary care veterinarian.

Bill’s main research interest lies in giant breed cardiomyopathy in both the Irish Wolfhound (IWH) and Great Dane.  He has worked with the Irish Wolfhound Foundation and the Great Dane Club of America for the past 12 years or so. Current projects involve echocardiography vs. EKG screening of the IWH, significance of ventricular ectopy in the IWH breed and the establishment of NTproBNP levels within both the IWH and Great Dane breeds.  He presented data describing IWH type cardiomyopathy and it prevalence at the ACVIM Forum in June 2015.

Dr. Tyrrell lives in Leesburg, Virginia with his wife, Jen, two daughters, Avery (16), Ella (13), three Maine Coon cats, Chianti, Dani, and Serafina as well as two Cavalier King Charles Spaniel, Henry and Violet.   In his rare personal time he enjoys golfing, fishing, wine collecting, and cheering on the Hokies. Dr. Tyrrell sees patients primarily at The LifeCentre in Leesburg, Virginia.

neal peckens

Neal Peckens

Dr. Peckens earned his bachelor’s degree in biology from St. Mary’s College of Maryland and subsequently graduated with honors from the Virginia-Maryland Regional College of Veterinary Medicine. He completed a rotating emergency/specialty medicine internship with a regional referral hospital. He then practiced as an emergency clinician at the Animal Emergency and Critical Care Associates at The LifeCentre of Leesburg, Virginia prior to joining and completing his residency with CVCA.

Dr. Peckens’ professional interests include the early detection and treatment of feline cardiomyopathy, evidence-based management of canine cardiomyopathies, and minimally invasive interventional catheterization procedures. Dr. Peckens strives to provide optimal care tailored to each patient. Open and effective communication is the cornerstone of his daily interactions with his clients and collaborating primary care veterinarians in his effort to optimize his patient’s quality and quantity of life. Dr. Peckens, his wife Deborah, and young daughters Madison and Sydney share their Herndon, VA home with their beloved Doberman-mix Sadie, Pug-mix Cooper, and Maine Coon-mix Zoey. In his free time, he enjoys participating in adventure races, playing guitar, and cooking/grilling.

Dr. Peckens sees patients primarily at the Hope Advanced Veterinary Center in Vienna, VA and in VCA  Southpaws Veterinary Specialists & Emergency Center in Fairfax, VA.


gina pasieka

Gina Pasieka

Dr. Gina Pasieka was born and raised in New York. She has always loved and cared for animals, sparking an interest in veterinary medicine at a very early age. Dr. Pasieka became a licensed veterinarian technician out of high school, working in both emergency and specialty medicine practices for 11 years before attending veterinary school. In 1996, she graduated from a human diagnostic ultrasound program, applying that knowledge to a mobile veterinary specialty practice in New York.

Dr. Pasieka graduated veterinary school as class valedictorian in 2004 from Louisiana State University – Geaux Tigers! She was inducted into Phi Zeta, the veterinary honor society, during her time at LSU.

Upon graduation, she finished a rotating medical and surgical internship at Oradell Animal Hospital in New Jersey in 2005.  Before obtaining her cardiology residency with CVCA in 2006, Dr. Pasieka spent a year providing quality, compassionate medical care within a general veterinary practice on Long Island. Upon completion of her residency and board exams, Dr. Pasieka became board certified in veterinary cardiology in 2009. Afterwards, she happily took a staff position at CVCA, providing care for our patients mainly at The LifeCentre in Leesburg, VA and in the Hope Advanced Veterinary Center in Vienna, VA offices. Her special interests lay in the management of more critical cardiac patients, especially those pets with concurrent medical concerns. She has a strong belief that educating clients and veterinary support staff regarding a pet’s cardiac disease is an important part of providing the best care.

jennifer sidley

Jennifer Sidley

Dr. Sidley’s practice is devoted to the most effective and compassionate treatment of dogs and cats with heart disease.  She understands that staying current on the latest diagnostic techniques and treatment options is only part of her job and also places a high value on respectful client communication.  She strives to understand the financial, emotional, and other factors particular to each case but essential in helping the client develop the best plan for that patient.

Born and raised in northern Virginia, Dr. Sidley returned to the area in 2000 to join Chesapeake Veterinary Cardiology Associates.  She is a 1988 graduate of the University of Virginia, received her Doctorate of Veterinary Medicine from the University of Minnesota in 1996, and completed her internship and cardiology residency at North Carolina State University four years later.  She has been a Diplomate of the American College of Veterinary Internal Medicine in the College of Cardiology since 2000.  Dr. Sidley has designed and led academic research studies and has been published in many research journals, including the Journal of Veterinary Internal Medicine and the Journal of the American Veterinary Medical Association.

Dr. Sidley’s family includes a fluffy black Spaniel mix from a local rescue group, often mistaken for some sort of rare pedigreed dog, three cats of varied ancestry, and, the newest addition, a two-year-old daughter.  In her limited spare time, she enjoys outdoor activities and is often seen competing in local running races and the occasional triathlon.  In the winter months, she is looking forward to the day her daughter is old enough to be introduced to the bunny hill at one of the local ski areas.  

Dr. Sidley divides her cardiac appointment hours between the Regional Veterinary Referral Center in Springfield, and the Hope Center for Advanced Veterinary Medicine in Vienna.

Jess Weidman

Jess Weidman

Dr. Weidman received his bachelor’s degree from Pomona College in Claremont, CA and his veterinary degree from Oregon State University within Corvallis, OR. He completed his small animal medical internship at Veterinary Medicine and Surgery Group in Ventura, CA prior to joining CVCA for his cardiology residency program. Dr. Weidman completed his residency and became Board certified in cardiology in July of 2006.

His professional interests include emergency and critical care of the cardiac patient as well as cardiac pharmacology. Dr. Weidman has a large four-legged family with three dogs and one cat. Outside of work, he enjoys running, biking, and playing chess. Dr. Weidman primarily sees patients out of the Richmond, Virginia location.

Dr. Weidman primarily sees patients in the Dogwood Veterinary Emergency & Specialty Center in Richmond, VA.

Emily Olson

Emily Westphal

Dr. Emily Westphal attended Texas Christian University in Fort Worth, TX, prior to being accepted to veterinary school at Kansas State University in Manhattan, KS. After receiving her Doctorate in Veterinary Medicine, she completed a rotating small animal internship at North Carolina State University. She returned to Kansas State for a cardiology residency program and received her board certification in cardiology in 2011. Dr. Westphal has over 5+ years of experience in private practice referral medicine. She has a strong interest in acute and chronic management of heart disease (canine and feline), diagnosis and treatment of congenital heart defects, and arrhythmia management.

Dr. Westphal’s interests in her spare time include playing golf, being active in her church, playing the cello, hiking, traveling, wine tasting and crafting. She also enjoys spending time with her two dogs, Jackson and Reagan, and her grey tabby, Franklin.   And her husband Ryan and daughter, Sydney.

Sarah Lehman

Sarah Lehman Holdt

Dr. Sarah Lehman Holdt is originally from Philadelphia, PA. She graduated from the College of William and Mary with a degree in biology, then attended the University of Pennsylvania’s School of Veterinary Medicine. During veterinary school Dr. Holdt was active in several student groups, and also participated in research investigating inherited disorders of metabolism in dogs. After obtaining her veterinary degree, Dr. Holdt completed a one year rotating internship at the Hope Advanced Veterinary Center in Vienna, VA, followed by a specialty internship in Emergency and Critical Care at the University of Pennsylvania. She joined CVCA in 2014.

Dr. Holdt’s primary interests include the treatment of arrhythmias, congenital cardiac abnormalities, emergency and critical care of cardiac disease, and interventional cardiology. She is currently researching the prevalence and progression of arrhythmogenic cardiomyopathy in Bulldogs.

Dr. Holdt is happy to be in the D.C. area, and loves exploring both the city and beautiful surrounding countryside of Northern Virginia. Outside of the hospital, she enjoys hiking, singing (and other musical ventures), photography, tennis, horseback riding, and of course, spending time with family and friends. Dr. Holdt lives in Arlington with her dog “Ayden”, a 10 year old German Shepherd Mix.

Veterinarian Julie Andrie

Julie Andrie

Julie Andrie graduated from the University of Pittsburgh with a Bachelor’s degree.  She then went on to attend Ross University for Veterinary School and completed her clinical year at Oklahoma State.  After graduation from Oklahoma State, she went on to do her rotating internship at Kansas State University.
Dr. Andrie loves spending time with her two German Shepherds, Jackson and Cooper, and her two cats, Weezy and Kira.
Dr. Brett Boorstin

Brett Boorstin

Brett Boorstin graduated from California Polytechnic State University, San Luis Obispo with
a major in Animal Science and a minor in Music. He attended Western University of Health Science for Veterinary School. After graduation, he went on to complete a rotating small animal medicine and surgery internship followed by a cardiology specialty internship at Southern California Veterinary Specialty Hospital. Brett has an interest in congenital heart disease and minimally invasive cardiac procedures. He is very excited to join the team at CVCA.

Dr. Boorstin’s interests during his free time include surfing, snowboarding, hiking, golfing,, chess, and playing the piano. He is also known for telling really bad jokes. He looks forward to exploring the Virginia area and completing his residency in cardiology as part of the CVCA team.