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Family Practice

Gregory P. Ruzich, MD

Works at hospitals in Winfield, IL · Chicago, IL · Palos Heights, IL · Illinois

Summary

Dr. Gregory P. Ruzich, MD is a family doctor at 21202 Owens Rd, Suite 201, Mokena, IL 60448. Phone: (779) 334-0020. Accepts Medicare assignment. NPI 1558011759. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about Gregory P. Ruzich, 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 Gregory P. Ruzich accept Medicare assignment?
Yes. Medicare's clinician data says Gregory P. Ruzich 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.
What is Gregory P. Ruzich's NPI number?
1558011759. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Gregory P. Ruzich works

Medicare's Facility Affiliation Data lists Gregory P. Ruzich 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.

Practice locations

Addresses where Gregory P. Ruzich is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Gregory P. Ruzich as a member of this group (CMS data updated October 2, 2026).

  • Central Dupage Physician Group1,080 clinicians in the group

Specialties

Find other Family Practice doctors in Illinois →

Other family doctors in Mokena

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

All family doctors in Mokena →

Other clinicians in Central Dupage Physician Group

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

Clinician information

CredentialMD
Medical schoolRush Medical College Of Rush University
Graduation year2022 (4 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558011759
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians