Quick answers
- Does Wyndy L. Marthinussen accept Medicare assignment?
- Yes. Medicare's clinician data says Wyndy L. Marthinussen 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 Wyndy L. Marthinussen's NPI number?
- 1881616852. 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 Wyndy L. Marthinussen is enrolled with Medicare (CMS data updated October 2, 2026).
- 13285 Minnieville RdWoodbridge, VA 22192 (703) 986‑2400
- 14139 Potomac Mills RdWoodbridge, VA 22192 (703) 257‑3000
Group practices
Medicare enrollment lists Wyndy L. Marthinussen as a member of this group (CMS data updated October 2, 2026).
- Kaiser Foundation Health Plan of the Mid Atlantic States, Inc1,899 clinicians in the group
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Woodbridge
Clinicians with the same Medicare primary specialty in Woodbridge, VA — not a recommendation.
Other clinicians in Kaiser Foundation Health Plan of the Mid Atlantic States, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| School | University Of South Florida College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881616852 |
| 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 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