About Michael Thiim, MD

Michael Thiim received his BA at Ithaca College and MD from the State University of New York at Stony Brook. He completed a residency in Internal Medicine, a fellowship in Gastroenterology at St. Luke’s Hospital in New York City and a second fellowship in Hepatology at The Mount Sinai Medical Center, also in New York City.

Dr. Thiim was a member of the Senior Staff at Lahey Clinic where he served as the Medical Director of the Liver Center and as the Gastroenterology Fellowship Co-Director before joining the faculty of the Harvard Medical School and the MGH Gastrointestinal Unit in 1999. He has more than 25 years experience treating patients with liver conditions including cirrhosis, complications of liver failure, autoimmune liver diseases and viral liver diseases. He is an active member of the Mass General liver transplant program. Part of his practice is also devoted to general gastroenterology and endoscopy.

Dr. Thiim is actively engaged in medical education and he works with the MGH Internal Medicine Residency program as the Gastroenterology and Hepatology subspecialty education coordinator. Within the MGH Gastroenterology unit he teaches GI and Transplant Liver fellows in both the Gastroenterology and in the Liver Transplant Fellowship programs.

Clinical Interests:



Mass General Gastroenterology
15 Parkman Street
Boston, MA 02114-2696
Phone: 617-726-5925
Fax: 617-724-6832

Mass General/North Shore Center for Outpatient Care
102 Endicott Street
Danvers, MA 01923-3623
Phone: 617-726-5925
Fax: 978-882-6710

Medical Education

  • MD, Stony Brook Medicine
  • Residency, St. Luke's Hospital
  • Fellowship, Mount Sinai Hospital Medical Center
  • Fellowship, St. Luke's Hospital

American Board Certifications

  • Gastroenterology, American Board of Internal Medicine

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.