Quick answers
- Does John K. Biemer accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Biemer 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 John K. Biemer see?
- In 2024, CMS data shows 1,005 Original Medicare patients and 3,133 services for John K. Biemer. This counts Original Medicare only and measures volume, not quality.
- What is John K. Biemer's NPI number?
- 1609119411. 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 John K. Biemer, 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 | 1,005 |
|---|---|
| Services billed to Medicare | 3,133 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)1,211 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)469 services
- Special stained specimen slides to identify organisms including interpretation and report (88312)208 services
- Pathology examination of tissue using a microscope, moderately high complexity (88307)173 services
- Preparation of tissue for examination by removing any calcium present (88311)166 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%
- Ischemic heart disease35%
- Diabetes34%
- Chronic kidney disease29%
Hospitals where John K. Biemer works
Medicare's Facility Affiliation Data lists John K. Biemer 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
- Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114
Practice locations
Addresses where John K. Biemer is enrolled with Medicare (CMS data updated October 2, 2026).
- 155 E Brush Hill RdElmhurst, IL 60126 (630) 833‑1400
Group practices
Medicare enrollment lists John K. Biemer as a member of this group (CMS data updated October 2, 2026).
- Associated Pathology Consultants-Elmhurst SC9 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Elmhurst
Clinicians with the same Medicare primary specialty in Elmhurst, IL — not a recommendation.
Other clinicians in Associated Pathology Consultants-Elmhurst SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609119411 |
| 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