Dr. Ryer is a board-certified and fellowship-trained vascular surgeon. His clinical interests include management of thoracic and abdominal aneurysms, carotid stenting and endarterectomy, stenting of the lower extremities and venous disease management. Dr. Ryer earned his medical degree from Temple University. He completed his residency at NewYork-Presbyterian Hospital/Weill Cornell Medical Center, and his fellowship in vascular surgery at Mayo Clinic, Rochester. Dr. Ryer is certified by the American Board of Surgery in surgery and vascular surgery. Dr. Ryer is rated as a Distinguished provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Peripheral Artery Disease, Aneurysm Repair, and Stent Placement.

James R. Elmore, MD, is a vascular surgeon and chair of Vascular Surgery. Dr. Elmore obtained his medical degree from the University of Connecticut. He completed his surgery residency at Maine Medical Center and his vascular fellowship at Mayo Clinic in Rochester, Minn. Dr. Elmore is board certified in vascular surgery by the American Board of Surgery. He is a member of the American College of Surgeons, the Delaware Valley Vascular Society, the Eastern Vascular Society, the Vascular and Endovascular Surgery Society, the Society for Clinical Vascular Surgery and the Society for Vascular Surgery. Dr. Elmore has been recognized as a distinguished member of the Society for Vascular Surgery, a rare honor and distinction. He is past president of the Delaware Valley Vascular Society. Dr. Elmore’s clinical interests include carotid artery stents & carotid endarterectomy and was the principal investigator for CREST (a research trial investigating carotid stents). He has extensive experience with aortic aneurysm surgery and stents, and broad experience with leg revascularization with leg stents or bypass for peripheral arterial disease. Dr. Elmore is pleased to provide minimally invasive procedures for varicose veins for his patients at Geisinger. Stent placement for renal artery disease and mesenteric disease are also procedures he commonly performs. Dr. Elmore likes to treat all his patients as if they are his own family members. Every patient is treated as a VIP. He works hard to give them the most compassionate care possible. Dr. Elmore is rated as a Distinguished provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Arterial Insufficiency, Stent Placement, and Aneurysm Repair.

Dr. Garvin is a board-certified and fellowship-trained vascular surgeon. His clinical and research interests include carotid artery disease, aortic aneurysmal disease and peripheral artery disease. He has extensive experience with carotid stenting, carotid surgery, aortic stenting and aortic surgery, and stenting and surgery of arteries in the lower extremities. He also provides vascular access for dialysis patients. Dr. Garvin earned his medical degree from Temple University. He completed his residency at Western Pennsylvania Hospital, and a fellowship in vascular surgery at the Milton S. Hershey Medical Center. Dr. Garvin is certified by the American Board of Surgery in surgery and vascular surgery. Dr. Garvin is rated as a Distinguished provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Peripheral Artery Disease, Aneurysm Repair, and Carotid Artery Surgery.

. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Boils, Ascites, Pleurisy, and Visceromegaly.

. Dr. Carey is rated as an Experienced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Melorheostosis, Melorheostosis with Osteopoikilosis, Osteopenia, and Bronchogenic Cyst.

About Christopher Alexander DeMaioribus. Dr. Demaioribus is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Arterial Insufficiency, Peripheral Artery Disease, Carotid Artery Disease, Thoracic Aortic Aneurysm, and Carotid Artery Surgery.

Gregory G. Salzler, MD, is a board-certified vascular surgeon. He provides care for women and men who need a wide range of vascular procedures, including treatment for blood clots, deep vein thrombosis (DVT), renal artery disease, stroke, vascular disease, carotid artery disease, peripheral arterial disease (PAD), thoracic aneurysms, abdominal aortic aneurysms, venous disease and varicose veins.|Dr. Salzler has a clinical interest in all aspects of vascular and endovascular surgery, including limb salvage, dialysis access and minimally invasive endovascular techniques.|Board-certified in general surgery and vascular surgery, Dr. Salzler earned his medical degree from Georgetown University in Washington D.C. He completed a general surgery residency at New York-Presbyterian Hospital/Weill Cornell Medical Center. He then completed a fellowship in vascular surgery at the University of Pittsburgh Medical Center.|Dr. Salzler is an active member of several organizations, including the American College of Surgeons, Delaware Valley Vascular Society, Eastern Vascular Society and Vascular and Endovascular Surgery Society. He is a Fellow of the Society for Vascular Surgery and serves as an associate professor of surgery at the Geisinger Commonwealth School of Medicine. Dr. Salzler is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Peripheral Artery Disease, Aneurysm Repair, and Stent Placement.

Jeremy Irvan, MD, is a board-certified and fellowship-trained vascular surgeon. He treats adults with peripheral artery disease, carotid artery disease, aortic aneurysmal disease and varicose veins. He also assists with maintenance of arterial venous fistula.|Dr. Irvan earned his medical degree from The University of Arkansas in Fayetteville. After medical school, he completed a residency at The University of Oklahoma College of Medicine in Oklahoma City. He followed that with a fellowship in vascular surgery at Geisinger Medical Center in Danville.|“I never expected to become a vascular surgeon,” he says. “I always thought I would be a family medicine doctor. It’s all I was exposed to growing up. However, when I completed my rotation in vascular surgery, I knew this was the path for me.”|Originally from rural southwest Arkansas, he came to Geisinger after matching into a vascular surgery fellowship. “I was so impressed with the department of vascular surgery and the beauty of central Pennsylvania,” he says. “When the opportunity to work at Geisinger Medical Center arose, I accepted.”|He adds, “I love my team here at Geisinger. We have a dynamic, talented, motivated group of vascular surgeons, vascular surgical fellows and residents, nurse practitioners, physician assistants, vascular lab technologists, nursing staff and medical students. We all love treating our patients and seeing them achieve better health.”|In his spare time, he enjoys golf, cycling and lifting weights. Dr. Irvan is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Arterial Insufficiency, Peripheral Artery Disease, Mesenteric Artery Ischemia, and End-Stage Renal Disease (ESRD).

Dr. Obmann is a board-certified and fellowship-trained vascular surgeon. Her clinical interests include abdominal/thoracic aortic aneurysm/dissection repair, carotid artery stenting and endarterectomy, PVD balloon angioplasty/stenting and lower extremity bypass, endovenous treatments, endovascular thrombolytic therapy for acute DVT, and hemodialysis procedures. Dr. Obmann attended the Lake Erie College of Osteopathic Medicine, where she received her medical degree. She completed her residency as well as her fellowship in vascular surgery at Geisinger Medical Center. Dr. Obmann is certified by the American Board of Surgery in vascular surgery. Dr. Obmann is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). Her top areas of expertise are Carotid Artery Disease, Arterial Embolism, Arterial Insufficiency, Peripheral Artery Disease, and Carotid Artery Surgery.

Paul Dimuzio is a Vascular Surgeon and a General Surgeon in Philadelphia, Pennsylvania. Dr. Dimuzio is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Arterial Insufficiency, Thoracic Aortic Aneurysm, Carotid Artery Disease, Carotid Artery Surgery, and Fasciotomy. Dr. Dimuzio is currently accepting new patients.

Philosophy of care | My philosophy of care is that candor builds trust between you as the patient and me as your surgeon. Modern medicine is increasingly complex. You can only make good decisions for your own health if you understand the options, including frank discussions of the potential risks and benefits. When I meet with patients and their families, I employ a variety of methods to explain medical terminology and surgical procedures, such as sketching anatomy diagrams. You deserve to feel clear about your alternatives, secure in your decisions and confident in the skills of our entire health care team. | Why I entered medicine | Something can be a cliche and still be true: I wanted to help people. I come from a family of engineers, but I was drawn to the possibility of directly impacting individuals. I enjoy challenges and constantly learning new things. I like being face-to-face with patients and knowing my career is meaningful. It's also gratifying to be able to help my extended family navigate the health care system. | Community involvement | The causes that are most important to me are food insecurity, environmental protection and restoration, and voting rights. I also actively support my school-age children in their sports and other extracurricular community activities. | Personal interests | My current primary hobby is building bicycles and maintaining/modifying them for our family. We also enjoy hiking and playing board games together, and I am an adventurous eater and home cook. Dr. Shang is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Arterial Insufficiency, Carotid Artery Disease, and Carotid Artery Surgery.

Dr. Phang is a board-certified vascular surgeon. He attended West Virginia University School of Medicine, in Morgantown, W.V., where he earned his medical degree. Dr. Phang completed his vascular surgery residency at the University of Cincinnati Medical Center. Dr. Phang is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Arterial Insufficiency, Peripheral Artery Disease, Stasis Dermatitis and Ulcers, Carotid Artery Disease, and Carotid Artery Surgery.

Dr. Nikam is a board-certified and fellowship-trained vascular surgeon. His clinical interests include abdominal/thoracic aortic aneurysm/dissection repair, carotid artery stenting and endarterectomy, PVD balloon angioplasty/stenting and lower extremity bypass, endovenous treatments, endovascular thrombolytic therapy for acute DVT, and hemodialysis procedures. Dr. Nikam earned his medical degree from B.J. Medical College, Pune, in India. He then moved to the United States to complete his residency at Bronx-Lebanon Hospital Center. He completed a fellowship in vascular surgery at Geisinger Medical Center. Dr. Nikam is certified by the American Board of Surgery in surgery and vascular surgery. He speaks English, Hindi and Marathi. Dr. Nikam is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Peripheral Artery Disease, Arterial Insufficiency, and Carotid Artery Surgery.

Nicholas Madden, DO, specializes in vascular surgery and is certified by the American Osteopathic Board of Surgery. He practices at Vasc Altoona Clinic and is affiliated with UPMC Bedford and UPMC Altoona. Dr. Madden completed his medical degree at Philadelphia College of Osteopathic Medicine, his fellowship at University of Pennsylvania School of Medicine, and residency at Philadelphia College of Osteopathic Medicine. Dr. Madden is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Carotid Artery Disease, Arterial Insufficiency, Peripheral Artery Disease, Carotid Artery Surgery, and Angioplasty.

David Meir-Levi is a Thoracic Surgeon and a Vascular Surgeon in Allentown, Pennsylvania. Dr. Meir-Levi is rated as an Experienced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Arterial Insufficiency, Peripheral Artery Disease, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Endoscopy.

Edward Woo is a Vascular Surgeon in Philadelphia, Pennsylvania. Dr. Woo is rated as a Distinguished provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Carotid Artery Disease, Aneurysm Repair, and Stent Placement.

Steven Woratyla is a Vascular Surgeon in Lancaster, Pennsylvania. Dr. Woratyla is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Carotid Artery Disease, End-Stage Renal Disease (ESRD), Mesenteric Artery Ischemia, Carotid Artery Surgery, and Colostomy. Dr. Woratyla is currently accepting new patients.

Atul Rao is a Vascular Surgeon in Doylestown, Pennsylvania. Dr. Rao is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Arterial Insufficiency, Peripheral Artery Disease, Gangrene, Carotid Artery Surgery, and Stent Placement. Dr. Rao is currently accepting new patients.

Benjamin Chang is a Vascular Surgeon and an Interventional Radiologist in Williamsport, Pennsylvania. Dr. Chang is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Gangrene, Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Endoscopy.

Paul Foley is a Vascular Surgeon in Doylestown, Pennsylvania. Dr. Foley is rated as an Advanced provider by MediFind in the treatment of Superior Mesenteric Artery Syndrome (SMAS). His top areas of expertise are Aortic Dissection, Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, Carotid Artery Surgery, and Gastrostomy. Dr. Foley is currently accepting new patients.