Quick answers
- Does Denis Kuzelj accept Medicare assignment?
- Yes. Medicare's clinician data says Denis Kuzelj 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 Denis Kuzelj see?
- In 2024, CMS data shows 403 Original Medicare patients and 447 services for Denis Kuzelj. This counts Original Medicare only and measures volume, not quality.
- What is Denis Kuzelj's NPI number?
- 1558658849. 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 Denis Kuzelj, 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 | 403 |
|---|---|
| Services billed to Medicare | 447 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)259 services
- Emergency department visit with moderate level of medical decision making (99284)105 services
- Critical care, first 30-74 minutes (99291)48 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%
- Arthritis61%
- Ischemic heart disease52%
- Chronic kidney disease47%
- Heart failure46%
Hospitals where Denis Kuzelj works
Medicare's Facility Affiliation Data lists Denis Kuzelj 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.
- Deaconess Illinois CrossroadsMount Vernon, IL · Acute Care Hospital · Emergency services: listed by Medicare · CCN 140294
- Marshall Browning HospitalDu Quoin, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141331
- Memorial HospitalBelleville, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140185
- OSF Saint Anthony's Health CenterAlton, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 140052
- Wabash General Hospital 1Mount Carmel, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141327
Practice locations
Addresses where Denis Kuzelj is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Saint Anthonys WayAlton, IL 62002 (618) 465‑2571
- 4500 Memorial DrBelleville, IL 62226 (618) 257‑5644
Group practices
Medicare enrollment lists Denis Kuzelj as a member of these groups (CMS data updated October 2, 2026).
- Emergency Services Midwest SC37 clinicians in the group
- Alton-Griffin Emergency Group PC18 clinicians in the group
Specialties
- Emergency Medicineprimary
- Family Practicealso
Other emergency medicine doctors in Alton
Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.
Other clinicians in Emergency Services Midwest SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558658849 |
| 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