Ervin Kocjancic, MD

Medicare activity in 2024

Official CMS public-use data for Ervin Kocjancic, 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)182 services
2. Diagnostic exam of bladder and urethra using an endoscope (52000)54 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)48 services
4. Telephone medical discussion with physician, 21-30 minutes (99443)40 services
5. Electronic assessment of bladder emptying (51741)36 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%
• Arthritis49%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%
• Diabetes37%
• Chronic kidney disease32%

Hospitals where Ervin Kocjancic works

Medicare's Facility Affiliation Data lists Ervin Kocjancic 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.

• Ingalls Memorial HospitalHarvey, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140191
• The University of Chicago Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140088

Practice locations

Addresses where Ervin Kocjancic is enrolled with Medicare (CMS data updated October 2, 2026).

• 5841 S Maryland AveChicago, IL 60637 (773) 702‑1000

Group practices

Medicare enrollment lists Ervin Kocjancic as a member of these groups (CMS data updated October 2, 2026).

• University of Chicago1,712 clinicians in the group
• The University of Chicago Medical Center915 clinicians in the group

Specialties

• Urologyprimary

Find other Urology doctors in Illinois →

Other urologists in Chicago

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

• Ikenna C. Madueke
• Thomas C. Malvar, MD
• Edward M. Schaeffer
• Diboro Kanabolo, MD
• Kent T. Perry Jr., MD
• Simone Crivellaro, MD
• Omer Acar, MD
• Juan Ramon Torres Anguiano, MD

All urologists in Chicago →

Other clinicians in University of Chicago

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

• Zhana Smith, MD
• Purav T. Desai, MD
• Anna C. Fuller
• Nicholas Jaszczak, MD
• Mark J. Ratain, MD
• Fatima A. Aldarweesh, 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