Quick answers
- Does Stephanie S. Kalvig accept Medicare assignment?
- Yes. Medicare's clinician data says Stephanie S. Kalvig 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 Stephanie S. Kalvig see?
- In 2024, CMS data shows 780 Original Medicare patients and 2,524 services for Stephanie S. Kalvig. This counts Original Medicare only and measures volume, not quality.
- What is Stephanie S. Kalvig's NPI number?
- 1598955775. 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 Stephanie S. Kalvig, 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 | 780 |
|---|---|
| Services billed to Medicare | 2,524 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)918 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)685 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)21 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)12 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%
- Atrial fibrillation52%
- Ischemic heart disease48%
- Arthritis42%
- Heart failure33%
Hospitals where Stephanie S. Kalvig works
Medicare's Facility Affiliation Data lists Stephanie S. Kalvig 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.
- Boone County HospitalBoone, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161372
- Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160030
- MercyOne Des Moines Medical CenterDes Moines, IA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 160083
- UnityPoint Health - MarshalltownMarshalltown, IA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 160001
- Van Diest Medical CenterWebster City, IA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 161361
Practice locations
Addresses where Stephanie S. Kalvig is enrolled with Medicare (CMS data updated October 2, 2026).
- 1015 Union StBoone, IA 50036 (515) 433‑8481
- 1816 Philadelphia StAmes, IA 50010 (515) 232‑2500
Group practices
Medicare enrollment lists Stephanie S. Kalvig as a member of this group (CMS data updated October 2, 2026).
- Catholic Health Initiatives-Iowa Corp113 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Other clinicians in Catholic Health Initiatives-Iowa Corp
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2007 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1598955775 |
| 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