Stephen M. Gryzlo, MD

Medicare activity in 2024

Official CMS public-use data for Stephen M. Gryzlo, 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. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)456 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)277 services
3. X-ray of knee, 3 views (73562)148 services
4. Aspiration and/or injection of fluid from large joint (20610)100 services
5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)99 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 cholesterol71%
• Arthritis67%
• High blood pressure54%
• Ischemic heart disease22%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)20%
• Anxiety19%

Hospitals where Stephen M. Gryzlo works

Medicare's Facility Affiliation Data lists Stephen M. Gryzlo 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.

• Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281

Practice locations

Addresses where Stephen M. Gryzlo is enrolled with Medicare (CMS data updated October 2, 2026).

• 259 E Erie StChicago, IL 60611 (312) 503‑1944
• 425 Sand Creek Dr, Suite CChesterton, IN 46304
• 675 N Saint Clair StChicago, IL 60611
• 675 N St ClairChicago, IL 60611

Group practices

Medicare enrollment lists Stephen M. Gryzlo as a member of these groups (CMS data updated October 2, 2026).

• Northwestern Medical Faculty Foundation4,503 clinicians in the group
• Chesterton Physical Therapy Inc186 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Illinois →

Other orthopedic surgeons in Chicago

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

• Caroline E. Vonck, MD
• Anthony Christiano, MD
• Vasili Karas
• Linda I. Suleiman, MD
• Gregory V. Schimizzi, MD
• Nitin Goyal, MD
• John T. Pinnello, MD
• Surrenthia R. Parker, MD

All orthopedic surgeons in Chicago →

Other clinicians in Northwestern Medical Faculty Foundation

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

• Joy L. Coleman, MD
• Natalie P. Rivera, DO
• Danielle M. McCarthy, MD
• Sarang B. Thaker, MD
• Julia A. Ruth
• Marla J. Schwarz

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