Quick answers
- Does Douglas F. Niemann accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas F. Niemann 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 Douglas F. Niemann see?
- In 2024, CMS data shows 1,494 Original Medicare patients and 2,668 services for Douglas F. Niemann. This counts Original Medicare only and measures volume, not quality.
- What is Douglas F. Niemann's NPI number?
- 1619016409. 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 Douglas F. Niemann, 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 | 1,494 |
|---|---|
| Services billed to Medicare | 2,668 |
| Different services or procedures | 116 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Screening 3d breast mammography (77063)744 services
- Screening mammography (77067)744 services
- Ct scan head or brain without contrast (70450)123 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)112 services
- Diagnostic mammography of 1 breast (77065)83 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 pressure68%
- High cholesterol63%
- Arthritis49%
- Diabetes25%
- Depression23%
- Anxiety22%
Hospitals where Douglas F. Niemann works
Medicare's Facility Affiliation Data lists Douglas F. Niemann 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.
- Bellevue Medical CenterBellevue, NE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 280132
- Nebraska Orthopaedic HospitalOmaha, NE · Acute Care Hospital · Emergency services: listed by Medicare · CCN 280129
- St Lukes Regional Medical CenterSioux City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160146
- The Nebraska Medical CenterOmaha, NE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 280013
Practice locations
Addresses where Douglas F. Niemann is enrolled with Medicare (CMS data updated October 2, 2026).
- 2720 Stone Park BlvdSioux City, IA 51104 (712) 279‑3500
- Emile 42nd StOmaha, NE 68198 (402) 559‑4015
Group practices
Medicare enrollment lists Douglas F. Niemann as a member of these groups (CMS data updated October 2, 2026).
- UNMC Physicians1,518 clinicians in the group
- Northwest Iowa Hospital Corporation160 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Other clinicians in UNMC Physicians
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619016409 |
| 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