Quick answers
- Which hospitals does Nicholas N. Armstrong work at?
- Medicare's official clinician data lists Nicholas N. Armstrong at 3 hospitals: Aurora Lakeland Medical Center, Aurora Medical Center Oshkosh and Aurora St Lukes Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicholas N. Armstrong see patients?
- Medicare's clinician data lists 4 practice locations, including Milwaukee, WI and Elkhorn, WI. Call before your visit to confirm the address.
- What is Nicholas N. Armstrong's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Nicholas N. Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas N. Armstrong 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 Nicholas N. Armstrong?
- (414) 219-3056, as listed in official Medicare / NPI Registry data.
- What is Nicholas N. Armstrong's NPI number?
- 1457329534. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nicholas N. Armstrong works
Medicare's Facility Affiliation Data lists Nicholas N. Armstrong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora Lakeland Medical CenterElkhorn, WI · Acute Care Hospital · CCN 520102
- Aurora Medical Center OshkoshOshkosh, WI · Acute Care Hospital · CCN 520198
- Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · CCN 520138
Practice locations
Addresses where Nicholas N. Armstrong is enrolled with Medicare (CMS data updated 2026-10-02).
- 1020 N 12th StMilwaukee, WI 53233 (414) 219‑3056
- 2801 W Kinnickinnic River PkwyMilwaukee, WI 53215 (414) 385‑8600
- 2900 W Oklahoma AveMilwaukee, WI 53215 (414) 646‑5410
- W3985 County Rd NnElkhorn, WI 53121 (262) 741‑2000
Group practices
Medicare enrollment lists Nicholas N. Armstrong as a member of this group (CMS data updated 2026-10-02).
- Aurora Medical Group, Inc.3,813 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Milwaukee
Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457329534 |
| 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