Quick answers
- Does John N. Gietzen accept Medicare assignment?
- Yes. Medicare's clinician data says John N. Gietzen 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 N. Gietzen see?
- In 2024, CMS data shows 662 Original Medicare patients and 8,376 services for John N. Gietzen. This counts Original Medicare only and measures volume, not quality.
- What is John N. Gietzen's NPI number?
- 1538178025. 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 N. Gietzen, 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 | 662 |
|---|---|
| Services billed to Medicare | 8,376 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 83 |
Most frequent services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)4,467 services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)1,093 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)869 services
- Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)367 services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)270 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%
- Alzheimer's disease or dementia75%
- High cholesterol68%
- Depression56%
- Arthritis51%
- Anxiety47%
Hospitals where John N. Gietzen works
Medicare's Facility Affiliation Data lists John N. Gietzen 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.
- Aspirus Stevens Point Hospital & Clinics, Inc.Stevens Point, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520002
- Blessing HospitalQuincy, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140015
- Deaconess Illinois Union CountyAnna, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141342
- Reedsburg Area Medical CenterReedsburg, WI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 521351
- Riverside Medical CenterKankakee, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140186
Practice locations
Addresses where John N. Gietzen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Veterans DrManteno, IL 60950 (815) 468‑6581
- 1707 N 12th St, Bldg 29mQuincy, IL 62301 (217) 222‑8641
- W5491 Windmill Ridge RdNew Glarus, WI 53574 (928) 277‑1009
Group practices
Medicare enrollment lists John N. Gietzen as a member of this group (CMS data updated October 2, 2026).
- Kemell Health LLC2 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Kemell Health LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538178025 |
| 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