Quick answers
- Which hospitals does Barrett P. Larson work at?
- Medicare's official clinician data lists Barrett P. Larson at 5 hospitals: Avera Heart Hospital of South Dakota, Avera McKennan Hospital & University Health Center, Avera St Mary's Hospital, Lakes Regional Healthcare and Spencer Municipal Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Barrett P. Larson see patients?
- Medicare's clinician data lists 6 practice locations, including Sioux Falls, SD and Milbank, SD. Call before your visit to confirm the address.
- What is Barrett P. Larson's specialty?
- Medicare lists Pulmonary Disease as the primary specialty.
- Does Barrett P. Larson accept Medicare assignment?
- Yes. Medicare's clinician data says Barrett P. Larson 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.
- Does Barrett P. Larson offer telehealth?
- Medicare's clinician data says Barrett P. Larson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Barrett P. Larson?
- (605) 322-8860, as listed in official Medicare / NPI Registry data.
- What is Barrett P. Larson's NPI number?
- 1114171014. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Barrett P. Larson works
Medicare's Facility Affiliation Data lists Barrett P. Larson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera Heart Hospital of South DakotaSioux Falls, SD · Acute Care Hospital · CCN 430095
- Avera McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · CCN 430016
- Avera St Mary's HospitalPierre, SD · Acute Care Hospital · CCN 430015
- Lakes Regional HealthcareSpirit Lake, IA · Acute Care Hospital · CCN 160124
- Spencer Municipal HospitalSpencer, IA · Acute Care Hospital · CCN 160112
Practice locations
Addresses where Barrett P. Larson is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1301 S Cliff Ave, Suite 610Sioux Falls, SD 57105 (605) 322‑8860
- 1325 S Cliff AveSioux Falls, SD 57105
- 1325 S Cliff Ave, RadiologySioux Falls, SD 57105 (605) 322‑4878
- 4500 W 69th StSioux Falls, SD 57108
- 4520 W 69th StSioux Falls, SD 57108 (605) 977‑5000
Group practices
Medicare enrollment lists Barrett P. Larson as a member of this group (CMS data updated 2026-10-02).
- Avera McKennan959 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
Other pulmonologists in Sioux Falls
Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1114171014 |
| 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