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Emergency Medicine

John F. Korpics, MD

Works at hospitals in Downers Grove, IL · Illinois

Summary

Dr. John F. Korpics, MD is an emergency medicine doctor at 15900 W 127th St, Lemont, IL 60439. Phone: (630) 243-7100. Accepts Medicare assignment. In 2024, John F. Korpics had 432 Original Medicare patients and 493 services. NPI 1811998057. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 15900 W 127th St, Lemont, IL 60439 · Directions (1 more location)
  • Phone: (630) 243‑7100
  • Medicare: Accepts Medicare assignment
  • Hospital: Advocate Good Samaritan Hospital
  • Group practice: Dupage Emergency Physicians Convenient Care LLC
  • Medical school: Loyola University Of Chicago, Stritch School Of Medicine · graduated 1989 (37 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about John F. Korpics, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does John F. Korpics accept Medicare assignment?
Yes. Medicare's clinician data says John F. Korpics accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does John F. Korpics see?
In 2024, CMS data shows 432 Original Medicare patients and 493 services for John F. Korpics. This counts Original Medicare only and measures volume, not quality.
What is John F. Korpics's NPI number?
1811998057. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for John F. Korpics, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients432
Services billed to Medicare493
Different services or procedures26
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)222 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)131 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)51 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)31 services
  5. Emergency department visit with high level of medical decision making (99285)14 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure69%
  • Arthritis47%
  • Ischemic heart disease32%
  • Diabetes25%
  • Anxiety24%

Hospitals where John F. Korpics works

Medicare's Facility Affiliation Data lists John F. Korpics at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Advocate Good Samaritan HospitalDowners Grove, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140288

Practice locations

Addresses where John F. Korpics is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists John F. Korpics as a member of this group (CMS data updated October 2, 2026).

  • Dupage Emergency Physicians Convenient Care LLC29 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Illinois →

Other emergency medicine doctors in Lemont

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

All emergency medicine doctors in Lemont →

Other clinicians in Dupage Emergency Physicians Convenient Care LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolLoyola University Of Chicago, Stritch School Of Medicine
Graduation year1989 (37 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1811998057
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians