Quick answers
- Does Gretchen P. Kelly accept Medicare assignment?
- Yes. Medicare's clinician data says Gretchen P. Kelly 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 Gretchen P. Kelly see?
- In 2024, CMS data shows 985 Original Medicare patients and 1,271 services for Gretchen P. Kelly. This counts Original Medicare only and measures volume, not quality.
- What is Gretchen P. Kelly's NPI number?
- 1538159041. 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 Gretchen P. Kelly, 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 | 985 |
|---|---|
| Services billed to Medicare | 1,271 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient complete exam of visual system (92014)823 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)114 services
- New patient complete exam of visual system (92004)87 services
- Imaging of retina (92134)83 services
- Exam of visual field with extended testing (92083)64 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 cholesterol69%
- High blood pressure65%
- Arthritis38%
- Diabetes30%
- Chronic kidney disease28%
- Depression22%
Hospitals where Gretchen P. Kelly works
Medicare's Facility Affiliation Data lists Gretchen P. Kelly 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
- Mayo Clinic Health System Franciscan Healthcare SpartaSparta, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521305
- Mayo Clinic Health System-Franciscan Medical Center IncLa Crosse, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520004
Practice locations
Addresses where Gretchen P. Kelly is enrolled with Medicare (CMS data updated October 2, 2026).
- 191 Theater RdOnalaska, WI 54650 (608) 392‑5000
- 800 E Blackhawk AvePrairie Du Chien, WI 53821 (608) 326‑0808
- 800 W Ave SLa Crosse, WI 54601 (608) 785‑0940
Group practices
Medicare enrollment lists Gretchen P. Kelly as a member of this group (CMS data updated October 2, 2026).
- Mayo Clinic Health System-Southwest Wisconsin Region Inc534 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Onalaska
Clinicians with the same Medicare primary specialty in Onalaska, WI — not a recommendation.
Other clinicians in Mayo Clinic Health System-Southwest Wisconsin Region Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Pacific University - College Of Optometry |
| Graduation year | 1989 (37 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538159041 |
| 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