Robert J. Chalupczak, MD

Medicare activity in 2024

Official CMS public-use data for Robert J. Chalupczak, 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.

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)529 services
2. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)403 services
3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)255 services
4. Face-to-face behavioral counseling for obesity, 15 minutes (G0447)176 services
5. Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes (G0446)132 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%
• Chronic kidney disease61%
• Arthritis56%
• Osteoporosis44%
• Ischemic heart disease36%

Hospitals where Robert J. Chalupczak works

Medicare's Facility Affiliation Data lists Robert J. Chalupczak 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 Christ Hospital & Medical CenterOak Lawn, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140208

Practice locations

Addresses where Robert J. Chalupczak is enrolled with Medicare (CMS data updated October 2, 2026).

• 4301 W 95th StOak Lawn, IL 60453 (708) 425‑5500

Group practices

Medicare enrollment lists Robert J. Chalupczak as a member of this group (CMS data updated October 2, 2026).

• Lawn Medical Center, S.C.11 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Oak Lawn

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

• Joseph A. Kowalczyk, MD
• David R. Alter, MD
• Todd D. Johnson, MD
• Maheen F. Rahman, MD
• Amisha B. Shah, DO
• Yara E. Shams
• Anna M. Scigacz, MD
• Serik Tursunaliev, MD

All internal medicine doctors in Oak Lawn →

Other clinicians in Lawn Medical Center, S.C.

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

• Caitlin M. Rocha
• Mary Ellen Moore, DO
• Edward J. Rybka, DO
• Jennifer Hosso Cooper, DO
• Emelie Ilarde, MD
• Sheila M. Burns

Clinician information

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