Quick answers
- Which hospitals does Steven W. Sonnesyn work at?
- Medicare's official clinician data lists Steven W. Sonnesyn at 2 hospitals: Abbott Northwestern Hospital and Cambridge Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven W. Sonnesyn see patients?
- Medicare's clinician data lists 3 practice locations, including Minneapolis, MN. Call before your visit to confirm the address.
- What is Steven W. Sonnesyn's specialty?
- Medicare lists Infectious Disease as the primary specialty, and also Internal Medicine.
- Does Steven W. Sonnesyn accept Medicare assignment?
- Yes. Medicare's clinician data says Steven W. Sonnesyn accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Steven W. Sonnesyn?
- (612) 863-4096, as listed in official Medicare / NPI Registry data.
- What is Steven W. Sonnesyn's NPI number?
- 1275600231. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven W. Sonnesyn works
Medicare's Facility Affiliation Data lists Steven W. Sonnesyn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Abbott Northwestern HospitalMinneapolis, MN · Acute Care Hospital · CCN 240057
- Cambridge Medical CenterCambridge, MN · Acute Care Hospital · CCN 240020
Practice locations
Addresses where Steven W. Sonnesyn is enrolled with Medicare (CMS data updated 2026-10-02).
- 2800 Chicago Ave, Suite 250Minneapolis, MN 55407 (612) 863‑4096
- 2925 Chicago AveMinneapolis, MN 55407
- 800 E 28th StMinneapolis, MN 55407
Group practices
Medicare enrollment lists Steven W. Sonnesyn as a member of this group (CMS data updated 2026-10-02).
- Allina Health System3,842 clinicians in the group
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Minneapolis
Clinicians with the same Medicare primary specialty in Minneapolis, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275600231 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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