Quick answers
- Which hospitals does John G. Armstrong work at?
- Medicare's official clinician data lists John G. Armstrong at 3 hospitals: Buena Vista Regional Medical Center, Cherokee Regional Medical Center and Loring Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John G. Armstrong see patients?
- Medicare's clinician data lists 1 practice location in Storm Lake, IA. Call before your visit to confirm the address.
- What is John G. Armstrong's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does John G. Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says John G. 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 John G. Armstrong?
- (712) 732-4030, as listed in official Medicare / NPI Registry data.
- What is John G. Armstrong's NPI number?
- 1487948824. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John G. Armstrong works
Medicare's Facility Affiliation Data lists John G. Armstrong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Buena Vista Regional Medical CenterStorm Lake, IA · Critical Access Hospital · CCN 161375
- Cherokee Regional Medical CenterCherokee, IA · Critical Access Hospital · CCN 161362
- Loring HospitalSac City, IA · Critical Access Hospital · CCN 161370
Practice locations
Addresses where John G. Armstrong is enrolled with Medicare (CMS data updated 2026-10-02).
- 1525 W 5th StStorm Lake, IA 50588 (712) 732‑4030
Group practices
Medicare enrollment lists John G. Armstrong as a member of this group (CMS data updated 2026-10-02).
- Buena Vista Regional Medical Center26 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487948824 |
| 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