Quick answers
- Does Rance J. Hafner accept Medicare assignment?
- Yes. Medicare's clinician data says Rance J. Hafner 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 Rance J. Hafner see?
- In 2024, CMS data shows 174 Original Medicare patients and 1,696 services for Rance J. Hafner. This counts Original Medicare only and measures volume, not quality.
- What is Rance J. Hafner's NPI number?
- 1841274669. 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 Rance J. Hafner, 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 | 174 |
|---|---|
| Services billed to Medicare | 1,696 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)456 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)296 services
- Removal of tissue from wound, 20.0 sq cm or less (97597)219 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)203 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)118 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%
- Diabetes57%
- Heart failure53%
- Chronic kidney disease51%
- Arthritis44%
Hospitals where Rance J. Hafner works
Medicare's Facility Affiliation Data lists Rance J. Hafner 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.
- Bellin Health Oconto HospitalOconto, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521356
- Bellin Memorial HospitalGreen Bay, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520049
Practice locations
Addresses where Rance J. Hafner is enrolled with Medicare (CMS data updated October 2, 2026).
- 744 S Webster AveGreen Bay, WI 54301 (920) 433‑6025
Group practices
Medicare enrollment lists Rance J. Hafner as a member of this group (CMS data updated October 2, 2026).
- Bellin Memorial Hospital Inc697 clinicians in the group
Specialties
- Family Practiceprimary
- Hospice/Palliative Carealso
Other family doctors in Green Bay
Clinicians with the same Medicare primary specialty in Green Bay, WI — not a recommendation.
Other clinicians in Bellin Memorial Hospital Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Dakota School Of Medicine |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841274669 |
| 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