Quick answers
- Does Joseph S. Kokoszka accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph S. Kokoszka 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 Joseph S. Kokoszka see?
- In 2024, CMS data shows 437 Original Medicare patients and 1,421 services for Joseph S. Kokoszka. This counts Original Medicare only and measures volume, not quality.
- What is Joseph S. Kokoszka's NPI number?
- 1659478535. 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 Joseph S. Kokoszka, 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 | 437 |
|---|---|
| Services billed to Medicare | 1,421 |
| Different services or procedures | 92 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)297 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)162 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)146 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)133 services
- Biopsy of large bowel using a flexible endoscope (45380)96 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%
- Arthritis46%
- Ischemic heart disease30%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)28%
- Diabetes27%
Hospitals where Joseph S. Kokoszka works
Medicare's Facility Affiliation Data lists Joseph S. Kokoszka 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.
- Morris Hospital & Healthcare CentersMorris, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140101
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140252
- OSF Saint Elizabeth MDL CenterPeru, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140110
- OSF Saint Paul Medical CenterMendota, IL · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 141310
Practice locations
Addresses where Joseph S. Kokoszka is enrolled with Medicare (CMS data updated October 2, 2026).
- 150 W High StMorris, IL 60450 (815) 942‑2932
Group practices
Medicare enrollment lists Joseph S. Kokoszka as a member of this group (CMS data updated October 2, 2026).
- Morris Hospital115 clinicians in the group
Specialties
Other general surgeons in Morris
Clinicians with the same Medicare primary specialty in Morris, IL — not a recommendation.
Other clinicians in Morris Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659478535 |
| 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