Quick answers
- Does Kara Zweerink accept Medicare assignment?
- Yes. Medicare's clinician data says Kara Zweerink 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 Kara Zweerink see?
- In 2024, CMS data shows 78 Original Medicare patients and 92 services for Kara Zweerink. This counts Original Medicare only and measures volume, not quality.
- What is Kara Zweerink's NPI number?
- 1124606652. 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 Kara Zweerink, 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 | 78 |
|---|---|
| Services billed to Medicare | 92 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)42 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)32 services
- Emergency department visit with moderate level of medical decision making (99284)11 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%
- Arthritis58%
- Chronic kidney disease56%
- Diabetes50%
- Heart failure46%
Hospitals where Kara Zweerink works
Medicare's Facility Affiliation Data lists Kara Zweerink 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.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260032
- Barnes-Jewish St Peters HospitalSaint Peters, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260191
- Community First Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140251
- John H Stroger Jr HospitalChicago, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140124
- Progress West HospitalOfallon, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260219
Practice locations
Addresses where Kara Zweerink is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Barnes Hospital PlzSaint Louis, MO 63110 (314) 362‑9170
- 11133 Dunn RdSaint Louis, MO 63136 (314) 362‑9123
- 1225 Graham RdFlorissant, MO 63031 (314) 362‑9123
- 1901 W Harrison StChicago, IL 60612 (312) 633‑7292
- 400 S Kingshighway BlvdSaint Louis, MO 63110 (314) 454‑7900
Group practices
Medicare enrollment lists Kara Zweerink as a member of these groups (CMS data updated October 2, 2026).
- Washington University3,029 clinicians in the group
- Cook County788 clinicians in the group
- Washington University Community Specialists LLC105 clinicians in the group
Specialties
- Emergency Medicineprimary
- Medical Toxicologyalso
Other emergency medicine doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in Washington University
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | University Of Missouri, Kansas City, School Of Medicine |
|---|---|
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124606652 |
| 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