Quick answers
- Which hospitals does Jack R. O'Brien work at?
- Medicare's official clinician data lists Jack R. O'Brien at 3 hospitals: Allen Hospital, Buchanan County Health Center and MercyOne Oelwein Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jack R. O'Brien see patients?
- Medicare's clinician data lists 1 practice location in Independence, IA. Call before your visit to confirm the address.
- What is Jack R. O'Brien's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Jack R. O'Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Jack R. O'Brien 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 Jack R. O'Brien's NPI number?
- 1215594312. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jack R. O'Brien works
Medicare's Facility Affiliation Data lists Jack R. O'Brien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Allen HospitalWaterloo, IA · Acute Care Hospital · CCN 160110
- Buchanan County Health CenterIndependence, IA · Critical Access Hospital · CCN 161335
- MercyOne Oelwein Medical CenterOelwein, IA · Critical Access Hospital · CCN 161338
Practice locations
Addresses where Jack R. O'Brien is enrolled with Medicare (CMS data updated 2026-10-02).
- 1600 1st St EIndependence, IA 50644
Group practices
Medicare enrollment lists Jack R. O'Brien as a member of this group (CMS data updated 2026-10-02).
- Peoples Memorial Hospital48 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Independence
Clinicians with the same Medicare primary specialty in Independence, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215594312 |
| 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