About Our Doctors — Connecticut Gastroenterology Consultants

Sidney T. Bogardus, MD

Dr. Sidney Bogardus is the President and CEO of Connecticut Gastroenterology Consultants.  He is board-certified in Gastroenterology, Internal Medicine and Geriatrics.  He graduated from Yale University with his undergraduate degree, and from Columbia University College of Physicians and Surgeons in New York City with his M.D.  He did his internship and residency in Internal Medicine, as well as fellowships in Gastroenterology and Geriatrics, at the University of Chicago, and then served on the faculty at the University of Chicago.  He returned to New Haven as a Robert Wood Johnson Clinical Scholar at Yale School of Medicine.  After serving on the faculty at Yale and rising to Associate Professor of Medicine, Dr. Bogardus entered private practice in Gastroenterology  in New Haven while maintaining an appointment as Associate Clinical Professor of Medicine at Yale. Dr. Bogardus currently serves as the President and CEO of Connecticut Gastroenterology Consultants, and is also the Chief of Gastroenterology at the Saint Raphael Campus of Yale-New Haven Hospital.

Dr. Bogardus also holds a number of additional prominent positions in the local medical community.  He is on the Board of Directors of the New Haven Community Medical Group and on the Medical Executive Committee at the Saint Raphael Campus of Yale-New Haven Hospital.  He is on the Board of Directors of Shoreline Endoscopy, a division of Yale-New Haven Hospital.  He is a member of the Pharmacy and Therapeutics Committee and a past member of the Credentials Committee, both at Yale-New Haven Hospital.  He has served on the Board of Directors of the Foote School in New Haven.

In addition to his clinical and administrative responsibilities, Dr. Bogardus continues to teach medical students, residents and fellows, and has won the prestigious DeLuca Digestive Disease Fellowship Teaching Award, given by the Yale fellows to outstanding clinical faculty.  He has also published numerous articles in the medical literature, including multiple papers in such noteworthy journals as The New England Journal of Medicine, JAMA, and The Annals of Internal Medicine.  He has been elected as Fellow of both the American College of Physicians and the American Gastroenterological Association.

Dr. Bogardus’s clinical interests lie in general gastroenterology, including colorectal cancer screening, acid reflux, liver disease, and inflammatory bowel disease.  He sees new patients and referrals, as well as second opinions, in both the New Haven and Guilford offices of the practice.  He performs endoscopy and colonoscopy both in Guilford and New Haven.”

Michael T. Lipcan, III, MD

Dr. Lipcan received his undergraduate degree from Vassar College and medical degree from the University of Connecticut.  He completed his residency and internship in Internal Medicine at Boston University and fellowship in Gastroenterology and Hepatology at Thomas Jefferson University.

A native of Connecticut, Dr. Lipcan joined Connecticut Gastroenterology Consultants in 2005 where he pursues his clinical interests including the evaluation and management of GI bleeding, GI malignancies (focusing on colon cancer), celiac disease and liver disease (focusing on hepatitis C infection).

Dr. Lipcan maintains Board Certification in Gastroenterology and is active in the American College of Gastroenterology and the American Gastroenterological Association.  He provides inpatient consultation services at the Yale New Haven Hospital and the Yale-St Raphael Hospital Campus.  He sees office patient in the New Haven and Guilford offices.

Kristin MacArthur, MD

Dr. Kristin MacArthur is a graduate of Brown University in Providence, Rhode Island. She received her medical degree from the University of Connecticut School of Medicine. She completed her internal medicine residency at Beth Israel Deaconess Medical Center in Boston, Massachusetts, and her gastroenterology fellowship at Boston Medical Center. Dr. MacArthur is an active member of the American College of Gastroenterology and the American Society for Gastrointestinal Endoscopy

Dr. MacArthur has advanced training in inflammatory bowel disease, celiac sprue, colon cancer screening, pelvic floor dysfunction, and liver disorders including Hepatitis C and non-alcoholic fatty liver disease. She is proficient in upper and lower diagnostic and therapeutic endoscopy as well as capsule endoscopy. Dr. MacArthur is skilled in the management of all forms of gastrointestinal bleeding, polypectomy, and endoscopic dilation.

Jeremy Matloff, MD

Dr. Matloff earned his Medical Degree at Tufts University, where he was elected to the Alpha Omega Alpha medical honors society.  He continued his training in internal medicine at the Mound Sinai Hospital in New York, and also served as chief resident.  He stayed at Mount Sinai as a Fellow in Gastroenterology, where he was trained by the national leaders in the field.   He has published on hereditary colon cancer syndromes, and has presented his work at national meetings.  Dr. Matloff is well regarded for his personalized care of his patients, and understands the importance of the doctor patient relationship.  His areas of expertise include Individuals at high risk for colorectal cancer, treatment of Hepatitis C, Inflammatory bowel disease (Crohn’s Disease and Ulcerative Colitis), gastroesophageal reflux disease, abdominal pain, celiac disease, food intolerance, gastrointestinal bleeding, and capsule endoscopy.   Dr. Matloff also is one of the few physicians in Connecticut who performs Fibroscan, which is a non-invasive modality to detect liver fibrosis.   He sees patients in Guilford, New Haven, and Hamden.

Hannah L. Miller, MD

Dr. Miller has advanced training in motility disorders for fecal incontinence and constipation as well as dysphagia and reflux disease. She also has been specializing in the management of inflammatory bowel disease for over ten years.

Dr. Miller serves on the Women in Gastroenterology committee of the American College of Gastroenterology and is an active member of the American Gastroenterology Association, American College of Gastroenterology, and The Crohn’s Colitis Foundation of America.


Wayne T. Panullo, MD

Dr. Panullo- Although, I do general GI, some of my special interests lie in esophageal, pancreatic, and biliary disorders, as well as Gl bleeding.

There have been tremendous technological advances in these areas. In esophageal diseases, tiny endoscopically placed devices (BRAVO Procedure) can record acid reflux. Additionally, thin-caliber nasally placed catheters (lmpedance plethysmography) can also assess non-acid reflux while on medication. These instruments also allow us to correlate and assess whether reflux can be causing various symptoms. Minimally invasive endoscopic radiofrequency ablation (HALO Procedure) has been developed to treat early cancer and precancerous esophageal lesions, which previously required high risk surgery. More advanced (high resolution manometry) testing has been developed to better characterize esophageal motility disorders aiding in their treatment, especially achalasia. Less invasive and more accurate means are now utilized to assess pancreatic and biliary disorders.

These include MRI and endoscopic ultrasound (EUS) with biopsy capabilities. These approaches improve early and more precise diagnosis with little risk. Nonsurgical methods of removing bile duct stones, treating obstruction, and pancreatic pain have been improved.

Amazing advances utilizing micro-technology (PILLCAM) allows us to better diagnose intestinal bleeding, Crohns disease, and tumors. Basically, it involves swallowing a camera the size of a large vitamin that transmits over 50,000 images over 8 hours. I expect this technology will continue to evolve and have a larger scope in Gl practices in the future.

Personally, I remain extremely interested in teaching and find it both fulfilling and rewarding. I mentor colleagues, as well as teach residents, medical students, and Gl fellows training to become gastroenterologists. I volunteer as an attending at hospital clinics and doing procedures pro bono for the indigent.

I continue to enjoy family time and follow my children with their various travels.

Despite all of the difficulties of having to practice medicine, I continue to adapt and find ways to improve the delivery of health care. I am devoted to providing the best care possible and welcome any feedback as to how I can improve my practice.

David M. Wolfsohn, MD

Dr. Wolfsohn graduated from Brown University magna cum laude and as a member of the Sigma Xi honor society.  He received his medical doctorate from Cornell University and stayed at Cornell-New York Hospital for his residency in Internal Medicine.   After completing his residency, he worked as an Emergency Room physician and Clinical Instructor at The New York Hospital.  He completed his fellowship in Gastroenterology at University of California, San Diego.

Dr. Wolfsohn joined Connecticut Gastroenterology Consultants in 1996 and has an interest in general diseases of the digestive tract, colon cancer prevention, and Barrett’s esophagus for which he performs radiofrequency ablation and also lectures on the topic.  He is an Assistant Clinical Professor at the Yale School of Medicine and has been the Medical Director at the Yale-Temple Endoscopy Center for more than a decade.  He is a fellow of the American Gastroenterology Association and the American College of Gastroenterology.  Dr. Wolfsohn is currently the American College of Gastroenterology Governor for the state of Connecticut and serves on their National Patient Care Committee.  He is actively involved in the teaching of medical students, residents, fellows, and undergraduates and is a fellow of Jonathan Edwards college at Yale University.   Dr. Wolfsohn has a passion for teaching and received the 2015 Vincent A. Deluca Yale School of Medicine Teaching Award.

Dr. Wolfsohn’s interests include skiing, mountaineering and running with his yellow lab, Sadie.  An avid outdoorsman, Dr. Wolfsohn also enjoys hiking and kayaking with his two sons.

He and his wife, Elise, enjoy traveling with their children and experiencing different cultures.

Daniel J. Zanchetti, MD

Dr. Daniel J. Zanchetti was born and raised in Connecticut and graduated from Saint Joseph’s University in Philadelphia. He received his medical degree from Georgetown University School of Medicine and his residency training at Mount Sinai Medical Center where he received the Arnold P. Gold Foundation Excellence in Teaching Award and was also a Chief Resident. He completed a combined fellowship in Gastroenterology and Geriatrics at Boston Medical center and is also a Harvard Macy Scholar.

Dr. Zanchetti has advanced training in inflammatory bowel disease, geriatric gastroenterology, colon cancer screening, irritable bowel syndrome, capsule endoscopy, and hepatology including management of chronic Hepatitis B, Hepatitis C and cirrhosis. He is proficient in upper and lower diagnostic and therapeutic endoscopy, including management of all forms of gastrointestinal bleeding, complex polypectomy, and endoscopic dilation.

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