Quick answers
- Where does Tonja S. Koenigs see patients?
- Medicare's clinician data lists 2 practice locations, including Vermillion, SD and Yankton, SD. Call before your visit to confirm the address.
- What is Tonja S. Koenigs's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does Tonja S. Koenigs accept Medicare assignment?
- Yes. Medicare's clinician data says Tonja S. Koenigs 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 Tonja S. Koenigs?
- (605) 665-0841, as listed in official Medicare / NPI Registry data.
- What is Tonja S. Koenigs's NPI number?
- 1104042696. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Tonja S. Koenigs is enrolled with Medicare (CMS data updated 2026-10-02).
- 116 Market StVermillion, SD 57069 (605) 665‑0841
- 614 Broadway AveYankton, SD 57078 (605) 665‑0841
Group practices
Medicare enrollment lists Tonja S. Koenigs as a member of this group (CMS data updated 2026-10-02).
- Heartland Psychological Services6 clinicians in the group
Specialties
- Clinical Social Workerprimary
Find other clinicians: Clinical Social Worker, South Dakota →
Other clinical social workers in Vermillion
Clinicians with the same Medicare primary specialty in Vermillion, SD — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104042696 |
| 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
- 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