Quick answers
- Does Matthew J. Sondag accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew J. Sondag 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 Matthew J. Sondag see?
- In 2024, CMS data shows 1,892 Original Medicare patients and 5,289 services for Matthew J. Sondag. This counts Original Medicare only and measures volume, not quality.
- What is Matthew J. Sondag's NPI number?
- 1427347004. 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 Matthew J. Sondag, 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 | 1,892 |
|---|---|
| Services billed to Medicare | 5,289 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)1,280 services
- Injection, gadobutrol, 0.1 ml (A9585)851 services
- Ct scan head or brain without contrast (70450)398 services
- Low dose ct scan of chest for lung cancer screening (71271)351 services
- Mri scan of brain before and after contrast (70553)309 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 pressure69%
- High cholesterol67%
- Arthritis48%
- Anxiety34%
- Depression33%
- Ischemic heart disease28%
Hospitals where Matthew J. Sondag works
Medicare's Facility Affiliation Data lists Matthew J. Sondag 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.
- Abbott Northwestern HospitalMinneapolis, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240057
- Cambridge Medical CenterCambridge, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240020
- New Ulm Medical CenterNew Ulm, MN · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 241378
- St Francis Regional Medical CenterShakopee, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240104
- St Lukes HospitalDuluth, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240047
Practice locations
Addresses where Matthew J. Sondag is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 11; the Medicare profile lists all.
- 1230 E Main StMankato, MN 56001
- 1230 Main St E, PO Box 8674Mankato, MN 56002 (507) 625‑1811
- 1301 15th Ave WWilliston, ND 58801 (701) 774‑7400
- 1650 4th St SERochester, MN 55904 (507) 285‑8485
- 210 9th St SERochester, MN 55904 (507) 288‑3443
Group practices
Medicare enrollment lists Matthew J. Sondag as a member of these groups (CMS data updated October 2, 2026).
- Allina Health System3,842 clinicians in the group
- Olmsted Medical Center336 clinicians in the group
- Mankato Clinic Ltd242 clinicians in the group
- Consulting Radiologists Ltd77 clinicians in the group
- Mercy Medical Center77 clinicians in the group
- Noran Neurological Clinic, P.A.54 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Mankato
Clinicians with the same Medicare primary specialty in Mankato, MN — not a recommendation.
Other clinicians in Allina Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427347004 |
| 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