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Internal Medicine

Norman M. Decker, MD

Sees patients in Winfield, IL · Illinois

Summary

Norman M. Decker, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in Winfield, IL. NPI 1336534650. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Norman M. Decker, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
11Years since medical school (graduated 2015)
Loyola University Of Chicago, Stritch School Of MedicineMedical school
MaleGender (as listed)
Dupage Medical Group LtdGroup practice

Quick answers

Where does Norman M. Decker see patients?
Medicare's clinician data lists 1 practice location in Winfield, IL. Call before your visit to confirm the address.
What is Norman M. Decker's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Norman M. Decker accept Medicare assignment?
Yes. Medicare's clinician data says Norman M. Decker accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Norman M. Decker offer telehealth?
Medicare's clinician data says Norman M. Decker offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Norman M. Decker?
(630) 790-1872, as listed in official Medicare / NPI Registry data.
What is Norman M. Decker's NPI number?
1336534650. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Norman M. Decker is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Norman M. Decker as a member of this group (CMS data updated 2026-10-02).

  • Dupage Medical Group Ltd1,322 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Winfield

Clinicians with the same Medicare primary specialty in Winfield, IL — not a recommendation.

All internal medicine doctors in Winfield →

Clinician information

CredentialMD
Medical schoolLoyola University Of Chicago, Stritch School Of Medicine
Graduation year2015
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1336534650
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians