Quick answers
- Does Stephany L. Mazur accept Medicare assignment?
- Yes. Medicare's clinician data says Stephany L. Mazur accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Stephany L. Mazur see?
- In 2024, CMS data shows 2,398 Original Medicare patients and 3,984 services for Stephany L. Mazur. This counts Original Medicare only and measures volume, not quality.
- What is Stephany L. Mazur's NPI number?
- 1023544186. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Stephany L. Mazur, 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.
| Original Medicare patients | 2,398 |
|---|---|
| Services billed to Medicare | 3,984 |
| Different services or procedures | 171 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- X-ray of chest, 1 view (71045)542 services
- Screening 3d breast mammography (77063)439 services
- Screening mammography (77067)439 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)152 services
- X-ray of chest, 2 views (71046)147 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%
- Arthritis59%
- Diabetes35%
- Ischemic heart disease35%
- Chronic kidney disease32%
Hospitals where Stephany L. Mazur works
Medicare's Facility Affiliation Data lists Stephany L. Mazur 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.
- Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140200
- Holy Cross HospitalChicago, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140133
- Midwestern Region Medical Center, IncZion, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140100
- Mt Sinai Hospital Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140018
- Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114
Practice locations
Addresses where Stephany L. Mazur is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 155 E Brush Hill RdElmhurst, IL 60126 (331) 221‑0096
- 177 E Brush Hill RdElmhurst, IL 60126 (630) 646‑6020
- 2520 Elisha AveZion, IL 60099 (847) 872‑4561
- 2650 Ridge AveEvanston, IL 60201
- 645 S Central AveChicago, IL 60644 (773) 854‑5567
Group practices
Medicare enrollment lists Stephany L. Mazur as a member of these groups (CMS data updated October 2, 2026).
- Endeavor Health Medical Group3,350 clinicians in the group
- Mount Sinai Community Foundation248 clinicians in the group
- City of Hope Medical Group of Illinois PLLC129 clinicians in the group
- Loretto Hospital40 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Elmhurst
Clinicians with the same Medicare primary specialty in Elmhurst, IL — not a recommendation.
Other clinicians in Endeavor Health Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023544186 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians