Quick answers
- Does Sarah L. Gieszelmann accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah L. Gieszelmann 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 Sarah L. Gieszelmann see?
- In 2024, CMS data shows 139 Original Medicare patients and 160 services for Sarah L. Gieszelmann. This counts Original Medicare only and measures volume, not quality.
- What is Sarah L. Gieszelmann's NPI number?
- 1720448806. 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 Sarah L. Gieszelmann, 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 | 139 |
|---|---|
| Services billed to Medicare | 160 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)62 services
- Emergency department visit with high level of medical decision making (99285)57 services
- Emergency department visit with low level of medical decision making (99283)21 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 cholesterol71%
- Arthritis57%
- Anxiety46%
- Depression44%
- Diabetes40%
Practice locations
Addresses where Sarah L. Gieszelmann is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Memorial DrAlton, IL 62002 (618) 463‑7311
- 1000 W 10th StRolla, MO 65401 (573) 458‑8899
Group practices
Medicare enrollment lists Sarah L. Gieszelmann as a member of these groups (CMS data updated October 2, 2026).
- Phelps County Regional Medical Center116 clinicians in the group
- Southeastern Emergency Physicians of Memphis LLC94 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Alton
Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.
Other clinicians in Phelps County Regional Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720448806 |
| 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
- 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