Quick answers
- Which hospitals does John G. Piper work at?
- Medicare's official clinician data lists John G. Piper at 5 hospitals: Dallas County Hospital, Grinnell Regional Medical Center, MercyOne Des Moines Medical Center, Trinity Regional Medical Center and UnityPoint Health - Des Moines Iowa Methodist Medi…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John G. Piper see patients?
- Medicare's clinician data lists 3 practice locations, including Ottumwa, IA and Des Moines, IA. Call before your visit to confirm the address.
- What is John G. Piper's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does John G. Piper accept Medicare assignment?
- Yes. Medicare's clinician data says John G. Piper 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. Piper?
- (641) 684-2589, as listed in official Medicare / NPI Registry data.
- What is John G. Piper's NPI number?
- 1740276773. 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. Piper works
Medicare's Facility Affiliation Data lists John G. Piper at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Dallas County HospitalPerry, IA · Critical Access Hospital · CCN 161322
- Grinnell Regional Medical CenterGrinnell, IA · Acute Care Hospital · CCN 160147
- MercyOne Des Moines Medical CenterDes Moines, IA · Acute Care Hospital · CCN 160083
- Trinity Regional Medical CenterFort Dodge, IA · Acute Care Hospital · CCN 160016
- UnityPoint Health - Des Moines Iowa Methodist Medi…Des Moines, IA · Acute Care Hospital · CCN 160082
Practice locations
Addresses where John G. Piper is enrolled with Medicare (CMS data updated 2026-10-02).
- 1005 Pennsylvania Ave, Suite 102aOttumwa, IA 52501 (641) 684‑2589
- 1200 Pleasant StDes Moines, IA 50309 (515) 241‑6212
- 1215 Pleasant StDes Moines, IA 50309 (515) 875‑9100
Group practices
Medicare enrollment lists John G. Piper as a member of this group (CMS data updated 2026-10-02).
- The Iowa Clinic PC310 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons 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 | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740276773 |
| 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