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DR. JOHN EDWARD MADSEN M.D.
NPI 1144286667
Internal Medicine - Gastroenterology in New London, CT

Active since April 24, 2006
234A BANK ST, NEW LONDON, CT 06320(860) 442-0290(860) 442-2136 Get Directions Write a Review

NPPES record last updated: December 20, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John Edward Madsen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN EDWARD MADSEN M.D. (NPI 1144286667) is an individual gastroenterology provider in New London, Connecticut, licensed in Connecticut (016619) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1144286667
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. JOHN EDWARD MADSENCredential: M.D.
Location Address234A BANK STNew London, CT 06320-6054
Mailing Address234a Bank StNew London, CT 06320-6054 · (860) 442-0290 · Fax (860) 442-2136
Phone(860) 442-0290
Fax(860) 442-2136
Sole ProprietorNo
Enumeration DateApril 24, 2006
Last NPPES UpdateDecember 20, 2012
✔ NPI 1144286667 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CT · 016619
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
234A BANK ST, New London, CT 06320
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Other Identifiers 3

Medicare UPINB37983CT
Medicare ID-Type Unspecified100000043CT · Medicare
Medicaid001168194CT

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EMILY ANTONIA JOHNSON
Nurse Practitioner (Family)
234A BANK ST
NEW LONDON, CT 06320
Southeastern Connecticut Planning Region (860) 442-0290
DR. EUGENE SAPOZHNIKOV M.D.
Internal Medicine (Gastroenterology)
234A BANK ST
NEW LONDON, CT 06320
Southeastern Connecticut Planning Region (860) 442-0290
TERESA L D'ERRICO APRN
Nurse Practitioner
234A BANK ST
NEW LONDON, CT 06320
Southeastern Connecticut Planning Region (860) 442-0290
DR. JOHN FRESE M.D.
Internal Medicine (Gastroenterology)
234A BANK ST, 4TH FLOOR
NEW LONDON, CT 06320
Southeastern Connecticut Planning Region (860) 442-0290
COASTAL DIGESTIVE CARE CENTER LLC
Clinic/Center (Ambulatory Surgical)
234A BANK ST, 4TH FLOOR
NEW LONDON, CT 06320
Southeastern Connecticut Planning Region (860) 447-0402

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Madsen's NPI number?

The NPI number for John Madsen is 1144286667. It was assigned to this individual provider in the NPPES registry on April 24, 2006.

Where is John Madsen located?

John Madsen practices at 234A Bank St, New London, CT 06320. The listed phone number is (860) 442-0290.

What is John Madsen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for John Madsen was last updated on December 20, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.