Quick answers
- Does Lonnie D. Simmons accept Medicare assignment?
- Yes. Medicare's clinician data says Lonnie D. Simmons 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 Lonnie D. Simmons see?
- In 2024, CMS data shows 1,278 Original Medicare patients and 1,798 services for Lonnie D. Simmons. This counts Original Medicare only and measures volume, not quality.
- What is Lonnie D. Simmons's NPI number?
- 1851395735. 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 Lonnie D. Simmons, 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 | 1,278 |
|---|---|
| Services billed to Medicare | 1,798 |
| Different services or procedures | 125 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- X-ray of chest, 2 views (71046)292 services
- X-ray of chest, 1 view (71045)188 services
- Ct scan head or brain without contrast (70450)136 services
- Ct scan of abdomen and pelvis with contrast (74177)119 services
- X-ray of foot, minimum of 3 views (73630)50 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 pressure72%
- High cholesterol69%
- Arthritis48%
- Chronic kidney disease42%
- Anxiety32%
- Diabetes31%
Hospitals where Lonnie D. Simmons works
Medicare's Facility Affiliation Data lists Lonnie D. Simmons 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.
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520087
- Gundersen Palmer Lutheran Hospital and ClinicsWest Union, IA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 161316
- Gundersen Tri-County Hospital & ClinicsWhitehall, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521316
- St Elizabeth Medical CenterWabasha, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241335
- Vernon Memorial HospitalViroqua, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521348
Practice locations
Addresses where Lonnie D. Simmons is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 13; the Medicare profile lists all.
- 110 King StFayette, IA 52142 · Palmer Lutheran Health Center Inc (563) 425‑3381
- 1200 Grant Blvd WWabasha, MN 55981 (651) 565‑4531
- 1600 Main StOnalaska, WI 54650 (608) 783‑4681
- 1836 S AveLa Crosse, WI 54601 (608) 782‑7300
- 18601 Lincoln StWhitehall, WI 54773 (715) 538‑4361
Group practices
Medicare enrollment lists Lonnie D. Simmons as a member of these groups (CMS data updated October 2, 2026).
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
- Gundersen Clinic Ltd418 clinicians in the group
- Saint Elizabeths Hospital of Wabasha Inc94 clinicians in the group
- St Josephs Health Services Inc81 clinicians in the group
- Vernon Memorial Healthcare Inc77 clinicians in the group
- Tri-County Memorial Hospital Inc74 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Fayette
Clinicians with the same Medicare primary specialty in Fayette, IA — not a recommendation.
Other clinicians in Gundersen Lutheran Medical Center Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851395735 |
| 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