Quick answers
- Does Steven M. Udelhofen accept Medicare assignment?
- Yes. Medicare's clinician data says Steven M. Udelhofen 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 Steven M. Udelhofen see?
- In 2024, CMS data shows 146 Original Medicare patients and 311 services for Steven M. Udelhofen. This counts Original Medicare only and measures volume, not quality.
- What is Steven M. Udelhofen's NPI number?
- 1457581308. 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 Steven M. Udelhofen, 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 | 146 |
|---|---|
| Services billed to Medicare | 311 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)45 services
- Biopsy of large bowel using a flexible endoscope (45380)30 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)29 services
- Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (G0500)21 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)14 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 cholesterol75%
- High blood pressure66%
- Arthritis40%
- Diabetes23%
- Anxiety23%
- Depression21%
Hospitals where Steven M. Udelhofen works
Medicare's Facility Affiliation Data lists Steven M. Udelhofen 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.
- University of Iowa Health Care Medical Center DownIowa City, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160029
- University of Iowa Hospital & ClinicsIowa City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160058
Practice locations
Addresses where Steven M. Udelhofen is enrolled with Medicare (CMS data updated October 2, 2026).
- 540 E Jefferson St, 205 U of Ia Health Care Medical Center Ic JIowa City, IA 52245 (319) 688‑7880
Group practices
Medicare enrollment lists Steven M. Udelhofen as a member of this group (CMS data updated October 2, 2026).
- State University of Iowa1,897 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Iowa City
Clinicians with the same Medicare primary specialty in Iowa City, IA — not a recommendation.
Other clinicians in State University of Iowa
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457581308 |
| 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