Quick answers
- Which hospitals does James L. Boysen work at?
- Medicare's official clinician data lists James L. Boysen at 1 hospital: Avera St Lukes. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James L. Boysen see patients?
- Medicare's clinician data lists 5 practice locations, including Yankton, SD, Aberdeen, SD and Azle, TX. Call before your visit to confirm the address.
- What is James L. Boysen's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Critical Care (Intensivists) and Pulmonary Disease.
- Does James L. Boysen accept Medicare assignment?
- Yes. Medicare's clinician data says James L. Boysen 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 James L. Boysen?
- (512) 422-5326, as listed in official Medicare / NPI Registry data.
- What is James L. Boysen's NPI number?
- 1699779330. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James L. Boysen works
Medicare's Facility Affiliation Data lists James L. Boysen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera St LukesAberdeen, SD · Acute Care Hospital · CCN 430014
Practice locations
Addresses where James L. Boysen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 W 4th St, Suite 8Yankton, SD 57078
- 305 S State StAberdeen, SD 57401
- 317 N Broadway RdAzle, TX 76020 (512) 422‑5326
- 501 Summit StYankton, SD 57078
- 8 E US Hwy 12Groton, SD 57445 (605) 397‑4242
Group practices
Medicare enrollment lists James L. Boysen as a member of these groups (CMS data updated 2026-10-02).
- Avera St Lukes165 clinicians in the group
- Sacred Heart Health Services153 clinicians in the group
Specialties
Other internal medicine doctors in Yankton
Clinicians with the same Medicare primary specialty in Yankton, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699779330 |
| 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