Quick answers
- Which hospitals does Patrick M. O'Brien work at?
- Medicare's official clinician data lists Patrick M. O'Brien at 5 hospitals: Avera McKennan Hospital & University Health Center, Avera Merrill Pioneer Hospital, Hegg Memorial Health Center, Sioux Center Health and UNC Health Nash. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Patrick M. O'Brien see patients?
- Medicare's clinician data lists 4 practice locations, including Rock Rapids, IA, Spencer, IA and Sioux Falls, SD. Call before your visit to confirm the address.
- What is Patrick M. O'Brien's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Patrick M. O'Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick M. 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 Patrick M. O'Brien's NPI number?
- 1861615155. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Patrick M. O'Brien works
Medicare's Facility Affiliation Data lists Patrick M. O'Brien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · CCN 430016
- Avera Merrill Pioneer HospitalRock Rapids, IA · Critical Access Hospital · CCN 161321
- Hegg Memorial Health CenterRock Valley, IA · Critical Access Hospital · CCN 161336
- Sioux Center HealthSioux Center, IA · Critical Access Hospital · CCN 161346
- UNC Health NashRocky Mount, NC · Acute Care Hospital · CCN 340147
Practice locations
Addresses where Patrick M. O'Brien is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 S 10th AveRock Rapids, IA 51246
- 1200 1st Ave ESpencer, IA 51301
- 6100 S Louise AveSioux Falls, SD 57108
- 901 E Virgil AveMilbank, SD 57252
Group practices
Medicare enrollment lists Patrick M. O'Brien as a member of this group (CMS data updated 2026-10-02).
- Avera McKennan959 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861615155 |
| 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