Timothy J. Heilizer, MD

Medicare activity in 2024

Official CMS public-use data for Timothy J. Heilizer, 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)106 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)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)33 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)22 services
5. Diagnostic exam of anus using an endoscope (46600)20 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 cholesterol71%
• Arthritis50%
• Diabetes44%
• Depression32%
• Anxiety32%

Hospitals where Timothy J. Heilizer works

Medicare's Facility Affiliation Data lists Timothy J. Heilizer 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.

• AMITA Health Resurrection Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140117
• Presence Saint Joseph Hospital - ChicagoChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140224
• Presence Saints Mary and Elizabeth Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140180

Practice locations

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

• 2338 W N AveChicago, IL 60647 (773) 227‑5914

Specialties

• Colorectal Surgery (Proctology)primary
• General Surgeryalso

Find other Colorectal Surgery (Proctology) doctors in Illinois →

Other colorectal surgeons in Chicago

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

• Elisa Bianchi, MD
• Vitaliy Y. Poylin, MD
• Gerald A. Gantt, MD
• Benjamin D. Shogan, MD
• Jacqueline L. Harrison, MD
• Kinga S. Olortegui, MD
• Virginia O. Shaffer, MD
• Martin Uwah, MD

All colorectal surgeons in Chicago →

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