Quick answers
- Does David J. Kowalski accept Medicare assignment?
- Yes. Medicare's clinician data says David J. Kowalski 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 David J. Kowalski see?
- In 2024, CMS data shows 362 Original Medicare patients and 1,293 services for David J. Kowalski. This counts Original Medicare only and measures volume, not quality.
- What is David J. Kowalski's NPI number?
- 1538194600. 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 David J. Kowalski, 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 | 362 |
|---|---|
| Services billed to Medicare | 1,293 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)450 services
- Blood test, clotting time (85610)441 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)149 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)84 services
- Automated urinalysis test (81003)58 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 cholesterol70%
- Arthritis56%
- Diabetes37%
- Ischemic heart disease29%
- Anxiety24%
Hospitals where David J. Kowalski works
Medicare's Facility Affiliation Data lists David J. Kowalski 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.
- Clay County HospitalFlora, IL · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 141351
- Memorial Medical CenterSpringfield, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140148
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140189
- St Anthonys Memorial HospitalEffingham, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140032
Practice locations
Addresses where David J. Kowalski is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 N MapleEffingham, IL 62401 (217) 528‑7541
- 300 N Maple St PO Box, Suite 1268Effingham, IL 62401
- 501 N Main StFlora, IL 62839 (217) 528‑7541
- 503 N Maple StEffingham, IL 62401 (217) 342‑2121
Group practices
Medicare enrollment lists David J. Kowalski as a member of these groups (CMS data updated October 2, 2026).
- Springfield Clinic, LLP687 clinicians in the group
- St Anthonys Memorial Hospital of the Hospital Sisters of the Third25 clinicians in the group
- Marshall Clinic Effingham S C14 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Effingham
Clinicians with the same Medicare primary specialty in Effingham, IL — not a recommendation.
Other clinicians in Springfield Clinic, LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Southern Illinois University School Of Medicine |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538194600 |
| 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