His special interests in Gastroenterology include Inflammatory Bowel Disease, Colon Cancer Screening, Esophageal Disorders, Hepatitis and therapeutic endoscopy. He has been a member of the Alpha Omega Alpha Honor Medical Society since 1980 and is also a Fellow of the American College of Gastroenterology as well as a Fellow of the American College of Physicians.

Dr. Wolf is Board Certified in both Internal Medicine and Gastroenterology.

While enjoying all fields of Gastroenterology, Dr. Heller has a particular interest in inflammatory bowel disease (Crohn's disease and ulcerative colitis), interventional biliary endoscopy, and liver disease. A Fellow of the American College of Physicians and American College of Gastroenterology, Dr. Heller is Board Certified in both Internal Medicine and Gastroenterology.

While at Sinai Hospital he received the Best Resident of the Year Award in 1991. He did his Gastroenterology Fellowship at the Medical College of Virginia where he received extensive training in therapeutic gastrointestinal endoscopy and hepatology.

His special interest is ERCP (Endoscopic Retrograde Cholangiopancreatography). A member of the American College of Gastroenterology and a Fellow of the American College of Physicians.

Dr. Le is Board Certified in Gastroenterology. Dr. Le is a former Chairman of the Division of Gastroenterology and Director of Endoscopy at Harbor Hospital of Baltimore (July 1998-July 2004).
He holds the ranks of Assistant Professor of Medicine, University of Maryland School of Medicine and Instructor in Medicine, Johns Hopkins School of Medicine. As a teaching faculty member at Sinai Hospital and Harbor Hospital, he received the Golden Apple "Best Teacher of Year" Awards twice, in 1996 and 1998.

After several years in solo Gastroenterology practice, Dr. Zimmerman joined the practice of Woodholme Gastroenterology Associates, P.A. Dr. Zimmerman has special interest in diseases of the esophagus and colo-rectal cancer.

Dr. Zimmerman is married, has three children, and lives in Pikesville.

Dr. Zimmerman is Board Certified in both Internal Medicine and Gastroenterology.

Dr. Tarmin's research in gastro- intestinal oncology and inflammatory bowel disease has appeared in a number of professional journals. She has a personal interest in colon cancer screening, irritable bowel syndrome and treatment of obesity. A Fellow of the American College of Physicians, Dr. Tarmin is Board Certified in Internal Medicine and Gastroenterology.

Dr. Siuta completed a three-year Fellowship in Gastroenterology at the Medical College of Virginia in 1997. In addition to training in gastroenterology and hepatology, he received additional training in nutrition. During his first year he completed a Fellowship in Advanced Therapeutic Endoscopy and was the Chief Fellow.

He is Board Certified in both Internal Medicine and Gastroenterology. Professional interests include interventional biliary endoscopy, nutrition, colorectal cancer pathogenesis, and gastroesophageal reflux disease.

Dr. Gerald Hofkin received AB and MA degrees from Johns Hopkins University in June 1957. He received the MD degree from the University of Maryland in June 1961 He was awarded an MBA degree in May 2003 by the Johns Hopkins University. A member of Alpha Omega Alpha, he is board certified in both Internal Medicine and Gastroenterology and is a Fellow of the American College of Physicians and the American College of Gastroenterology.

Following his three years of service in the Army, he entered private practice in Baltimore from 1969 to 1991. He joined the full time faculty of Sinai Hospital from 1991 to 1999.

He has served as President of the Maryland Society of Gastrointestinal Endoscopy; Chairman of the Medical Executive Committee, Sinai Hospital and President of Medical Staff, Sinai Hospital; and Assistant Professor of Medicine, Johns Hopkins School of Medicine. His main areas of interest are the esophagus, stomach, small intestine and colon.

Dr. Tsao earned his medical degree from St. George's University School of Medicine. He completed an internal medicine internship and residency program at Stony Brook University Medical Center in 2004. He continued his training at Stony Brook with a fellowship in Gastroenterology and Hepatology.

Dr. Tsao is a member of the American Gastroenterological Association, the American College of Gastroenterology and the American Society of Gastrointestinal Endoscopy. He now holds the rank of clinical assistant professor at the University of Maryland School of Medicine. Dr. Tsao was given the 2008 Golden Apple award at Harbor Hospital for outstanding teaching. His research on gastrointestinal disorders has been published in peer-reviewed journals, and he is the recipient of several academic awards and honors.

Dr. Tsao's professional interests include colorectal cancer, upper digestive tract cancer, esophageal disorders, interventional biliary endoscopy and hepatology. He is based at Woodholme GI's Severn office on 802 Landmark Drive #129, Glen Burnie. He and his wife, Anna, reside in Ellicott City.

Dr. Steven Epstein was born and raised in Baltimore. He graduated Summa Cum Laude from Union College in Schenectady, New York and received his M.D. degree from the University of Maryland School of Medicine. He completed his internal medicine residency at the University of Maryland and his gastroenterology fellowship at Emory University in Atlanta, Georgia where he received training in diagnostic and interventional endoscopy as well as hepatology.

Dr. Epstein is a member of the American Gastroenterology Association, the American College of Gastroenterology, and the American Society for Gastrointestinal Endoscopy. His special interests include inflammatory bowel disease, gastro-intestinal cancers, and therapeutic endoscopy.

Dr. Eric Blum was born and raised in Pikesville, Maryland.  He graduated with highest honors from Emory University in Atlanta, Georgia in 1998 and received his M.D. degree from the University of Maryland School of Medicine in 2002.  He completed his internal medicine residency at Barnes-Jewish Hospital in St. Louis, Missouri in 2005, followed by his gastroenterology fellowship at University Hospitals Case Medical Center in Cleveland, Ohio in 2009.  While in Cleveland, Dr. Blum also received his M.S. in clinical research.

Dr. Blum is a member of the American Gastroenterology Association, the American College of Gastroenterology, and the Crohn’s and Colitis Foundation of America.  His special interests include Crohn’s disease, ulcerative colitis, and microscopic colitis (lymphocytic/collagenous colitis), but welcomes any patient with gastrointestinal problems.

Dr. Blum is board certified in both Internal Medicine and Gastroenterology. He is based at Woodholme's Landmark office.

Dr. Kenolisa (Keno) Onwueme draws on a broad analytical skill set developed over 15 years of life-sciences research and from clinical experience in varied environments for his clinical practice. He graduated with Distinction from Yale University with dual BSc/MSc degrees in chemistry and received MD and PhD degrees from Weill Cornell Medical College. He completed internal medicine residency at Harvard Medical School’s Brigham and Women’s Hospital and then gastroenterology fellowship at Johns Hopkins University School of Medicine. His scientific research has been recognized with numerous honors and publications.

Dr. Onwueme prizes commitment to quality and compassionate patient care and has been commended by peers and patients alike for this attribute. He has expert knowledge in gut microbiology/infections and special interests in diarrhea, constipation, disordered gut motility, autoimmune and inflammatory bowel disease.

His professional memberships include: American Gastroenterology Association, American College of Gastroenterology, American Medical Association and The Global Health Council. He co-founded Obala Foundation, a non-profit organization improving healthcare delivery in West Africa and enjoys soccer and bicycling.

Denese Gaughan, CRNP received a BS in Nursing from University of Maryland in 1993. She went on to earn her Masters in Nursing degree from University of Maryland School of Medicine Acute Care Nurse Practitioner program in 2000.

Ms. Gaughan attends patients at North West Hospital in addition to working with Dr. Zimmerman in Pikesville and Severn.

James D. Shaffer, PA-C received a BA from Pennsylvania State University. He continued his education at Lock Haven University in Pennsylvania, earning a Masters of Health Science Degree and a certificate as a Physician Assistant.

James attends patients with Dr. Wolf at the Pikesville and Severn offices, he also has privileges at Sinai and Northwest Hospitals.

He is a member of the American Academy of Physician Assistants (AAPA).

Pamela J. Isabel graduated from Penn State University with both her Bachelor’s and Master’s degrees in Healthcare Administration. After graduation Pamela spent 4 years in Guatemala and Ecuador with the Peace Corps. Pamela’s career has taken her through all aspects of healthcare administration, including long-term care, hospital administration, managed care and ambulatory care practices. Pamela earned her CMPE (Certified Medical Practice Executive) from MGMA (Medical Group Management Association).