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Internal Medicine

Mark E. Hroncich, MD

Works at hospitals in Melrose Park, IL · Maywood, IL · Berwyn, IL · Illinois

Summary

Mark E. Hroncich, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Melrose Park, IL, Maywood, IL and Berwyn, IL. NPI 1265465108. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Mark E. Hroncich, 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
42Years since medical school (graduated 1984)
Northwestern University Feinberg Medical SchoolMedical school
MaleGender (as listed)
Loyola Medical Group LLCGroup practice

Quick answers

Which hospitals does Mark E. Hroncich work at?
Medicare's official clinician data lists Mark E. Hroncich at 3 hospitals: Loyola Gottlieb Memorial Hospital, Loyola University Medical Center and MacNeal Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mark E. Hroncich see patients?
Medicare's clinician data lists 1 practice location in Berwyn, IL. Call before your visit to confirm the address.
What is Mark E. Hroncich's specialty?
Medicare lists Internal Medicine as the primary specialty, and also General Surgery.
Does Mark E. Hroncich accept Medicare assignment?
Yes. Medicare's clinician data says Mark E. Hroncich 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 Mark E. Hroncich offer telehealth?
Medicare's clinician data says Mark E. Hroncich offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Mark E. Hroncich?
(708) 362-2611, as listed in official Medicare / NPI Registry data.
What is Mark E. Hroncich's NPI number?
1265465108. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mark E. Hroncich works

Medicare's Facility Affiliation Data lists Mark E. Hroncich at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Mark E. Hroncich is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mark E. Hroncich as a member of this group (CMS data updated 2026-10-02).

  • Loyola Medical Group LLC127 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Berwyn

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

All internal medicine doctors in Berwyn →

Clinician information

CredentialMD
Medical schoolNorthwestern University Feinberg Medical School
Graduation year1984
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1265465108
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians