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Meet Our Team

Drs. Calligaro, Dougherty and Troutman

Keith D. Calligaro, MD

Keith D. Calligaro, M.D.

Keith D. Calligaro, M.D. is Chief of Vascular Surgery, Director of the Vascular Surgery Fellowship, and serves on the Editorial Board of the Journal of Vascular Surgery as well as served as President of the Eastern Vascular Society and the Society for Clinical Vascular Surgery. Dr. Calligaro has been named a “Top Doc” in Philadelphia Magazine every year since 1996.

Matthew J. Dougherty, MD

Matthew J. Dougherty, M.D.

Matthew J. Dougherty, M.D. is a native Philadelphian who is a Clinical Professor of Surgery at the University of Pennsylvania. He has authored or co-authored over 200 original articles, chapters, editorials, books and abstracts and serves on the editorial staff of the most prominent vascular journals. Dr. Dougherty is regularly listed by Philly Magazine and US News & World Reports as a Top Doc.

Douglas A. Troutman, D.O.

Dr. Troutman Graduated from Colgate University in New York in 2003 and received his D.O. from the Philadelphia College of Osteopathic Medicine. He completed his surgical residency at the Philadelphia College of Ostopathic Medicine in 2012. He completed his accredited vascular fellowship at Pennsylvania Hospital.

Why Patients Choose Us

When it comes to vascular care and surgery, choosing the right practice is important. Patients continue to choose Pennsylvania Vascular Associates for the following reasons:


Drs. Calligaro, Dougherty and Troutman  are among the best known vascular surgeons not only in the Philadelphia area but in the country. Their local reputation is based on outstanding results and handling the most difficult cases. Patients are often referred from as far as 2-3 hours away because internists and other vascular surgeons recognize their expertize. In addition, they have national reputations because of their involvement in regional and national academic vascular societies and their presentation of their results at regional and national conferences. Drs. Calligaro, Dougherty and Troutman have worked at Pennsylvania Hospital for about twenty years and their reputations have established the nation’s first hospital as a tertiary care center for the most advanced vascular care in the area.


Drs. Calligaro, Dougherty and Troutman are leaders in vascular care and surgery. They specialize in the most difficult cases and offer their patients the best alternatives available today, especially in the treatment of abdominal aortic aneurysms (AAAs) and carotid artery disease. Aortic aneurysms can usually be fixed without any incisions using stent grafts and percutaneous approaches and requiring only an overnight stay. Carotid artery blockages can be fixed with stenting or surgery – the best option is available. As vascular specialists, they have the expertize to offer all types of treatment to their patients, including medical treatment, minimally invasive procedures, and complex open surgical procedures. They are considered some of the most experienced and well respected vascular surgeons in the Philadelphia and surrounding area.

Access to specialists

Pennsylvania Vascular Associates works with a network of specialists at Pennsylvania Hospital including anesthesiologists, nephrologists, cardiologists, pulmonologists, diabetologists, and others. If Dr. Calligaro, Dr. Doughtery or Dr. Troutman determine that you need to see another specialist, they can arrange for you to see them the same day, ensuring prompt and accurate diagnosis and treatment of your condition. Almost no other medical center or vascular specialists can offer this type of convenient referrals. We also have onsite lab services for prompt diagnosis of a variety  of arterial and venous conditions, including aortic aneurysms, carotid artery disease, and deep vein thrombosis (DVT).

Excellent care

While Drs. Calligaro, Dr. Dougherty and Dr. Troutman are best known for their expertise as vascular surgeons, patients tell us the time and personal attention they receive is just as important. This opinion is shared by other physicians in the area and is exemplified by their being named as “Top Docs” in vascular surgery in Phildelphia Magazine. Pennsylvania Vascular Associates are dedicated to treating the patient, and not just the symptoms. The excellent care is also provided by the vascular fellows, general surgery residents, and nurse practitioner on the vascular service.