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Ophthalmology

Jung M. Rhee, MD

Works at hospitals in Harvard, IL · Janesville, WI · Crystal Lake, IL … · Illinois, Wisconsin

Summary

Dr. Jung M. Rhee, MD is an ophthalmologist at 3922 Mercy Dr, McHenry, IL 60050. Phone: (815) 344-4499. Accepts Medicare assignment. In 2024, Jung M. Rhee had 1,240 Original Medicare patients and 2,602 services. NPI 1023031770. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Jung M. Rhee, 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 Jung M. Rhee accept Medicare assignment?
Yes. Medicare's clinician data says Jung M. Rhee 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 Jung M. Rhee see?
In 2024, CMS data shows 1,240 Original Medicare patients and 2,602 services for Jung M. Rhee. This counts Original Medicare only and measures volume, not quality.
What is Jung M. Rhee's NPI number?
1023031770. 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 Jung M. Rhee, 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 patients1,240
Services billed to Medicare2,602
Different services or procedures19
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient problem focused exam of visual system (92012)759 services
  2. Established patient complete exam of visual system (92014)611 services
  3. Exam of visual field with extended testing (92083)239 services
  4. Imaging of optic nerve (92133)207 services
  5. New patient complete exam of visual system (92004)169 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 blood pressure75%
  • High cholesterol75%
  • Arthritis47%
  • Diabetes32%
  • Ischemic heart disease28%
  • Chronic kidney disease22%

Hospitals where Jung M. Rhee works

Medicare's Facility Affiliation Data lists Jung M. Rhee 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 Jung M. Rhee is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jung M. Rhee as a member of this group (CMS data updated October 2, 2026).

  • Mercy Health System Corporation753 clinicians in the group

Specialties

Find other Ophthalmology doctors in Illinois →

Other ophthalmologists in Illinois

Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.

All ophthalmologists in Illinois →

Other clinicians in Mercy Health System Corporation

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

Clinician information

CredentialMD
Medical schoolUniversity Of Chicago, Pritzker School Of Medicine
Graduation year1991 (35 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1023031770
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