Slawomir J. Marecik, MD

Medicare activity in 2024

Official CMS public-use data for Slawomir J. Marecik, 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 low level od decision making, if using time, 20 minutes or more (99213)136 services
2. Diagnostic exam of anus using an endoscope (46600)127 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)80 services
4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)75 services
5. Diagnostic exam of large bowel using a flexible endoscope (45378)51 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%
• Arthritis48%
• Ischemic heart disease32%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)32%
• Diabetes30%

Hospitals where Slawomir J. Marecik works

Medicare's Facility Affiliation Data lists Slawomir J. Marecik 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 Lutheran General HospitalPark Ridge, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140223

Practice locations

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

• 1550 N Northwest Hwy, Suite 107Park Ridge, IL 60068 (847) 759‑1110

Group practices

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

• LM Prasad M.D S.C3 clinicians in the group

Specialties

• Colorectal Surgery (Proctology)primary

Find other Colorectal Surgery (Proctology) doctors in Illinois →

Other colorectal surgeons in Illinois

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

• Robert I. Weisman, MD
• Kunal Kochar, MD
• Jessica Chin
• Alejandra M. Perez-Tamayo, MD
• Vivek Chaudhry, MD
• Kinga S. Olortegui, MD
• Felipe A. Pacheco Granda, MD
• Deane L. Smith Ii, MD

All colorectal surgeons in Illinois →

Other clinicians in LM Prasad M.D S.C

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

• John J. Park, MD
• Kunal Kochar, MD

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