John Edward Madsen MD

Physician

234a Bank StNew London, CT 06320
Phone+1 860-442-0290
Fax+1 860-442-2136

Join Doximity

As a Doximity member, you’ll join more than three million U.S. healthcare professionals—including 85+% of physicians, and 2/3 of all NPs and PAs—in a private, secure network.

Gain access to free telehealth tools, such as our "call shielding" and one-way patient texting.
Connect with colleagues in the same hospital or clinic.
You already have 3 invites waiting!
Read the latest clinical news, personalized to your specialty.

Join Doximity Already have an account?

Summary

Dr. John Madsen, MD is a gastroenterologist in New London, Connecticut. He is currently licensed to practice medicine in Connecticut, Virginia, and Illinois.

Education & Training

Yale-New Haven Medical CenterFellowship, Gastroenterology, 1974 - 1976
McGaw Medical Center of Northwestern UniversityResidency, Internal Medicine, 1973 - 1974
McGaw Medical Center of Northwestern UniversityResidency, Internal Medicine, 1969 - 1970
Weill Cornell MedicineClass of 1968

The following disclaimer is related to board certifications obtained from ABMS®, denoted by the ABMS® logo.

This information is proprietary data maintained in a copyrighted database owned by the American Board of Medical Specialties®. The display and presence of ABMS Data in no way constitutes any affiliation, association with, or endorsement of any advertising, promotion, or sponsorship by ABMS and its affiliates and subsidiaries, the ABMS Member Boards, or ABMS board certified physicians and medical specialists. Copyright 2026 American Board of Medical Specialties®. All rights reserved.

The user is responsible for ensuring that the profile obtained in this directory is the profile of the physician or medical specialist being sought.

A self-designated specialty, subspecialty, or practice area neither implies nor is equivalent to ABMS board certification or the existence of specialized training by or competence of a physician or medical specialist.

Certifications & Licensure

IL State Medical License 1969 - Present
CT State Medical License 1974 - 2027
VA State Medical License 1971 - 2008
American Board of Internal Medicine Internal Medicine
American Board of Internal Medicine Gastroenterology

Awards, Honors, & Recognition

CMS Meaningful Use Stage 1 Certification gGastro, gMed, Inc., 2012, 2014

Similar Physicians & HCPs

Abera Abay, MD
GINorwich, CT
You Sung Sang, MD
GINorwich, CT
John Frese, MD
GINew London, CT
Eugene Sapozhnikov, MD
GINew London, CT
Pamela Connors, MD
GIWesterly, RI
Steven Yolen, MD
GIWesterly, RI
Mical Campbell, MD
GINew London, CT
Lisa Panzini, MD
GIWesterly, RI
Shivani Sood, MD
GINorwich, CT
Amzad Khan, MD
GINew London, CT

Doximity / States / Connecticut / New London / John Madsen, MD

Dr. John Madsen, Dr. John Madsen, MD, Dr. J Madsen, Dr. John Edward Madsen