University of Pennsylvania Health System

Physician Announcements

Thursday, June 25, 2015

Penn Dermatology - Get to Know Jennifer Villasenor-Park, MD, PhD

Jennifer Villasenor-Park, MD, PhD, has joined Penn Dermatology. Dr Villasenor-Park received her medical degree from Harvard Medical School and completed a residency in dermatology followed by an investigative fellowship with a focus on cutaneous oncology at the University of Pittsburgh Medical Center. Her clinical interests include skin lymphoma, non-melanoma skin cancer, melanoma, and general and cosmetic dermatology, including BOTOX® and fillers for wrinkles.

Dr. Villasenor-Park is board certified in dermatology. She sees general dermatology patients at Penn Dermatology Bucks County, in Yardley, PA, and skin lymphoma patients at the Perelman Center for Advanced Medicine in Philadelphia.

Tuesday, June 9, 2015

Get to Know: Penn Gastroenterology

Laurel Fisher, MD
A graduate of Temple University School of Medicine, Laurel Fisher, MD, completed an internship and residency in internal medicine at the University of Michigan Health System, where she subsequently completed a gastroenterology fellowship. Dr. Fisher's research interests include acute and chronic rejection following liver transplantation and alcoholic liver disease. As a clinician, her interests includes gastrointestinal bleeding, device-assisted deep enteroscopy and colon cancer screening. Dr Fisher is board certified in gastroenterology. She sees patients at the Perelman Center for Advanced Medicine.

Bryson Katona, MD, PhD
A member of the GI Cancer Risk Evaluation program at Penn Medicine, Bryson Katona, MD, is a graduate of Washington University School of Medicine in St. Louis, where he received both an MD and PhD degrees. He then joined the Physician Scientist Pathway Program at Penn Medicine to complete an internal medicine residency and fellowship in gastroenterology. Dr. Katona sees patients at the Hospital of the University of Pennsylvania and the Perelman Center for Advanced Medicine.




Immanuel K. Ho, MD
A graduate of the University of Rochester School of Medicine and Dentistry, Immanuel K. Ho, MD, completed his internship and residency at Montefiore Medical Center and a fellowship in gastroenterology at Mount Sinai Medical Center. Dr. Ho's clinical interests include gastrointestinal endoscopy, gastrointestinal oncology and disorders of the liver, biliary system, and pancreas. Among his specialties are upper endoscopy, interventional endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound. Dr. Ho is board certified in internal medicine and gastroenterology. He sees patients at Pennsylvania Hospital Washington Square.


Christine Hsu, MD 
A graduate of Jefferson Medical College (now the Sidney Kimmel Medical College), Christine Hsu, MD, completed her internship and residency in internal medicine at Boston Medical Center. She subsequently completed a fellowships in gastroenterology and transplant hepatology at New York-Presbyterian/Columbia University Medical Center. Dr. Hsu’s clinical interests include hepatic cancers and transplant hepatology. She is board certified in internal medicine and gastroenterology.She sees patients at the Perelman Center for Advanced Medicine and Penn Medicine at Lancaster General Health.



Jan-Michael A. Klapproth, MD
Dr. Klapproth received his medical degree at Albert-Ludwigs University, Freiburg, Germany, and completed his internal medicine residency and gastroenterology subspecialty training at the University of Maryland Medical Center. Dr. Klapproth’s research interests include bacterial modification of the enteric immune system and outcome investigations of medical education. Dr. Klapproth is board certified in internal medicine and gastroenterology. He sees patients at the Perelman Center for Advanced Medicine.


Krissy Lynch, MD
Krissy Lynch, MD graduated from the Feinberg School of Medicine of Northwestern University and completed her residency in internal medicine at the McGaw Medical Center. She then completed a fellowship in gastroenterology at The Johns Hopkins Hospital. Dr. Lynch's clinical interests include esophageal and swallowing disorders. She sees patients at the Perelman Center for Advanced Medicine.


Ravikanth Maddipati, MD
Dr. Maddipati received his medical degree from the Boston University School of Medicine and completed his internship and residency in internal medicine at Massachusetts General Hospital, also in Boston. He subsequently completed a fellowship in gastroenterology at the Perelman School of Medicine. Dr. Maddipati’s research interests include the study of gastrointestinal cancers, with a focus on the management of patients with pancreatic cancer and genetic cancer syndromes. Dr. Maddipati is board certified in internal medicine. He sees patients at the Perelman Center for Advanced Medicine.


Michael Rajala, MD, PhD
A graduate of the Albert Einstein College of Medicine, Michael Rajala, MD, PhD, completed his residency in internal medicine and a fellowship in gastroenterology at the University of Michigan. Subsequently, he completed an advanced fellowship in therapeutic endoscopy at the Hospital of the University of Pennsylvania. Dr. Rajala's research interests include endoscopic therapy in bariatric medicine. Dr. Rajala is board certified in gastroenterology and internal medicine. He sees patients at the Perelman Center for Advanced Medicine and Philadelphia VA Medical Center.


Marina Serper, MD, MS
Marina Serper, MD, MS, received her medical degree at Thomas Jefferson University School of Medicine and completed an internship and residency in internal medicine at Thomas Jefferson University Hospital. She then completed a gastroenterology fellowship at Northwestern Memorial Hospital in Chicago and a transplant hepatology fellowship at the Hospital of the University of Pennsylvania. Dr. Serper's research interests include medication adherence, post-transplant outcomes and health services utilization. She is board certified in internal medicine and gastroenterology, and sees patients at the Perelman Center for Advanced Medicine.

Frank Scott, MD, MSCE
A graduate of Temple University School of Medicine, Frank Scott, MD, MSCE, completed an internship and residency at New York Presbyterian Hospital, and a fellowship in gastroenterology and Master of Science in clinical epidemiology at the Hospital of the University of Pennsylvania. Dr. Scott's research focuses on the risk of neoplastic and infectious complications arising from immunosuppressant therapy in inflammatory bowel disease. His clinical interests include Crohn's disease and ulcerative colitis. He is board certified in internal medicine and gastroenterology, and sees patients at the Perelman Center for Advanced Medicine.


Ting-Chin David Shen
David Shen, MD, received his medical degree from the College of Physicians and Surgeons at Columbia University, and completed his internal medicine residency training at New York Presbyterian Hospital-Columbia University Medical Center. He then completed a gastroenterology fellowship at the Hospital of the University of Pennsylvania. Dr Shen's  research interests include the metabolic interactions between the host and the gut microbiome. His clinical interests include general GI disorders, nutrition/obesity, and celiac disease.


Manoj Shirodkar, MD
Manoj Shirodkar, MD, received his MD from the University of Maryland School of Medicine and completed his residency in internal medicine at Thomas Jefferson University Hospital before completing a gastroenterology/hepatology fellowship at Robert Wood Johnson University Hospital. His clinical research interests include Barrett’s esophagus and Crohn’s disease. Dr. Shirodkar is board certified in gastroenterology. He sees patients at Pennsylvania Hospital.




Vesselin Tomov, MD, PhD
Vesselin Tomov, MD, PhD, is a graduate of Harvard Medical School. He completed his internship and residency training in internal medicine at the Hospital of the University of Pennsylvania, and subsequently completed a fellowship in gastroenterology at the Hospital of the University of Pennsylvania. Dr. Tomov's research interests include enteric viral infections with a focus on noroviruses, the leading cause of acute viral gastroenteritis. Dr. Tomov is board certified in internal medicine and gastroenterology. He sees patients at the Perelman Center for Advanced Medicine.


Christina A. Twyman-St. Victor, MD
A graduate of Johns Hopkins University School of Medicine, Christina Twyman-St. Victor, MD, completed an internship and residency in internal medicine at The Johns Hopkins Hospital. She then completed a fellowship in gastroenterology at the Hospital of the University of Pennsylvania. Dr. Twyman-St. Victor's research interests include harnessing the immune system to fight cancer, and the combination of radiation therapy and immunotherapy to treat gastrointestinal cancers. Board certified in internal medicine and gastroenterology, Dr. Twyman-St. Victor sees patients at the Hospital of the University of Pennsylvania.

Richard M. Wu, MD, MPH
A graduate of Drexel University School of Medicine, where he received both MD and MPH degrees, Richard Wu, MD, MPH, completed his residency in internal medicine at Duke University and fellowships in gastroenterology and hepatology at Thomas Jefferson University Hospital. Dr. Wu's clinical interests include general and video-capsule endoscopy, small bowel enteroscopy, hepatology and colon cancer screening. Board certified in gastroenterology, Dr. Wu sees patients at the Philadelphia VA Medical Center.




Xiao Zhao, MD
Dr. Xiao Zhao graduated from the Icahn School of Medicine at Mount Sinai School of Medicine, where she also completed a Howard Hughes Medical Research Fellowship. She then completed a residency in internal medicine at Yale-New Haven Hospital, and went on to complete a fellowship in gastroenterology at the Hospital of the University of Pennsylvania. Her current research focuses on the molecular mechanisms underlying biliary diseases. Dr. Zhao sees patients at the Perelman Center for Advanced Medicine.





























Wednesday, May 13, 2015

Get to Know: Christopher J. Lyons, MD, Of Penn Orthopaedic Surgery

Christopher J. Lyons, MD, has joined the department of orthopaedic surgery at Penn Medicine. Dr. Lyons  received his medical degree from Temple University School of Medicine and subsequently completed a residency in orthopaedics at Temple University Hospital.
Dr. Lyons treats a wide range of orthopaedic conditions from arthritis to fractures, and performs minimally invasive total knee arthroscopy and total hip replacement surgery. He also has extensive experience as an orthopaedic trauma surgeon.
Dr. Lyons sees patients at Penn Orthopaedics Southern Chester County and Penn Orthopaedics Exton.


John P. Manta, MD, joins Penn Orthopaedics


John P. Manta, MD, has joined the department of orthopaedic surgery at Penn Medicine.  Dr. Manta  received his medical degree from Temple University School of Medicine and completed a general surgery internship and  residency at Temple University Hospital. Dr. Manta continued his training with a fellowship in sports medicine at Georgetown University.
Dr. Manta specializes in sports medicine and arthroscopic knee and shoulder surgery, and has extensive expertise in meniscus surgery of the knee and arthroscopic rotator cuff and instability repair of the shoulder.
Dr. Manta sees patients at Penn Orthopaedics Southern Chester County and Penn Orthopaedics Exton.


Monday, May 4, 2015

New Surgical Director of Lung Transplantation Christian A. Bermudez, MD, joins Penn Medicine

Penn Medicine is pleased to welcome Christian A. Bermudez, MD, as the new surgical director of lung transplantation and director of thoracic transplantation. A cardiothoracic surgeon, Dr. Bermudez received his medical degree from the University of ConcepciĆ³n School of Medicine, in ConcepciĆ³n, Chile. He subsequently completed an advanced fellowship in cardiac surgery at the Mayo Clinic, followed by a fellowship in cardiothoracic transplantation and mechanical circulatory support at the University of Pittsburgh Medical Center.

Dr. Bermudez' clinical expertise includes advanced procedures for heart failure, including revascularization, valvular procedures and thrombo-endarterectomy for chronic pulmonary hypertension.

Dr. Bermudez is board-certified in general surgery and cardiothoracic surgery. He sees patients at the Heart and Vascular Center and the Harron Lung Center in the Perelman Center for Advanced Medicine.

Thursday, March 19, 2015

Spruce Internal Medicine, Penn Medicine Washington Square welcomes Erica Wolf, MD

Erica Wolf, MD, is now seeing patients at Spruce Internal Medicine, Penn Medicine Washington Square. Dr. Wolf received her medical degree from the Temple University School of Medicine and completed her internship and residency in internal medicine at Graduate Hospital in Philadelphia. She is board certified in internal medicine.

Nina Rosano, MD, joins Penn Endocrinology

Nina Rosano, MD, has joined Penn Endocrinology. Dr. Rosano received her medical degree from St. Petersburg State Pediatric Medical Academy in St. Petersburg, Russia. Subsequently, she completed an internship and residency in internal medicine, as well as a fellowship in endocrinology, at the UMass Memorial Medical Center in Worcester, MA. Dr. Rosano is a specialist in the diagnosis and treatment of endocrine and metabolic conditions including thyroid cancer, thyroid nodules, thyroid dysfunction, diabetes and pre-diabetes, adrenal, pituitary, bone, lipid and calcium disorders. Her clinical interests include diabetes, obesity, and peribariatric endocrine care.

Dr. Rosano is board certified in Internal Medicine and Endocrinology. She sees patients at Penn Medicine Cherry Hill and Penn Medicine Woodbury Heights.




New at Penn Endocrinology: Eyad Hamoudeh, MD

Eyad Hamoudeh, MD, has joined Penn Endocrinology.  Dr. Hamoudeh received his medical degree from Jordan University of Science and Technology, and completed his internship and residency in internal medicine, as well as a fellowship in endocrinology, at the Joan C. Edwards School of Medicine at Marshall University in Huntington, WV.
Dr. Hamoudeh is a specialist in the diagnosis and treatment of endocrine diseases including diabetes, thyroid dysfunctions, hypogonadism, hypercalcemia, metabolic bone diseases and lipid disorders. His particular clinical interests include the management of diabetes mellitus and insulin  pumps. Dr. Hamoudeh is board certified in internal medicine and endocrinology. He sees patients at Penn Medicine Cherry Hill and Penn Medicine Woodbury Heights.



Penn Neurology Valley Forge welcomes Roderick Spears, MD, FAHS

Neurologist Roderick Spears, MD, FACS, has joined the faculty at Penn Neurology, Valley Forge. Dr. Spears received his medical degree from Wayne State University School of Medicine, and completed residencies in internal medicine (Akron General Medical Center) and neurology (Albert Einstein-Montefiore Medical Center). In addition, Dr. Spears received Fellowship training in headache/facial pain  at the Headache Institute at St. Luke's/Roosevelt Medical Center in New York City.  
Dr. Spears specializes in facial pain, head injury and neck pain, headaches, migraines and neuropathic pain. He is board certified in Neurology.

Sleep Specialist Burton Mark, DO, joins Penn Internal Medicine, East Marschall Street

Burton Mark, DO, is now seeing patients at Penn Internal Medicine, East Marshall Street, in West Chester, PA. Dr. Burton received his medical degree from the Kirksville College of Osteopathic Medicine in Kirksville, MO, and completed his internship at Doctors Hospital in Columbus, Ohio. He completed a residency in Psychiatry at Embreeville State Hospital in West Bradford, Pennsylvania.
Dr. Mark is a sleep specialist. He is board certified in Psychiatry and Sleep Medicine.