Quick answers
- Does Tonja L. Winekauf accept Medicare assignment?
- Yes. Medicare's clinician data says Tonja L. Winekauf 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 Tonja L. Winekauf see?
- In 2024, CMS data shows 198 Original Medicare patients and 2,324 services for Tonja L. Winekauf. This counts Original Medicare only and measures volume, not quality.
- What is Tonja L. Winekauf's NPI number?
- 1710275912. 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 Tonja L. Winekauf, 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 | 198 |
|---|---|
| Services billed to Medicare | 2,324 |
| Different services or procedures | 62 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)336 services
- Insertion of needle into vein for collection of blood sample (36415)301 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)125 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)105 services
- Hemoglobin a1c level (83036)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 pressure75%
- High cholesterol75%
- Arthritis38%
- Anxiety36%
- Depression34%
- Diabetes32%
Hospitals where Tonja L. Winekauf works
Medicare's Facility Affiliation Data lists Tonja L. Winekauf 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.
- Sanford Vermillion Medical CenterVermillion, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431336
- St Lukes Regional Medical CenterSioux City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160146
Practice locations
Addresses where Tonja L. Winekauf is enrolled with Medicare (CMS data updated October 2, 2026).
- 1122 12th StHawarden, IA 51023 (712) 551‑3400
- 330 Dakota Dunes Blvd, Suite 150Dakota Dunes, SD 57049 (712) 294‑7390
- 3520 Singing Hills BlvdSioux City, IA 51106 (712) 294‑7400
- 714 Lincoln St NELe Mars, IA 51031 (712) 546‑3338
- 801 5th StSioux City, IA 51101 (712) 279‑2010
Group practices
Medicare enrollment lists Tonja L. Winekauf as a member of these groups (CMS data updated October 2, 2026).
- Iowa Physicians Clinic Medical Foundation1,246 clinicians in the group
- Northwest Iowa Hospital Corporation160 clinicians in the group
- Floyd Valley Healthcare38 clinicians in the group
- Hawarden Regional Healthcare Clinics LLC21 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Hawarden
Clinicians with the same Medicare primary specialty in Hawarden, IA — not a recommendation.
Other clinicians in Iowa Physicians Clinic Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1710275912 |
| 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