Quick answers
- Does Martha A. Karlstad accept Medicare assignment?
- Yes. Medicare's clinician data says Martha A. Karlstad accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Martha A. Karlstad's NPI number?
- 1457589954. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Martha A. Karlstad works
Medicare's Facility Affiliation Data lists Martha A. Karlstad at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Vernon Memorial HospitalViroqua, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521348
Practice locations
Addresses where Martha A. Karlstad is enrolled with Medicare (CMS data updated October 2, 2026).
- 206 N Mill StLa Farge, WI 54639 (608) 625‑2494
- 407 S Main St, Suite 400Viroqua, WI 54665 (608) 637‑3174
- 507 S Main StViroqua, WI 54665 (608) 637‑2101
Group practices
Medicare enrollment lists Martha A. Karlstad as a member of this group (CMS data updated October 2, 2026).
- Vernon Memorial Healthcare Inc77 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Other clinicians in Vernon Memorial Healthcare Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457589954 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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