Quick answers
- Where does Mason E. Vanrossum see patients?
- Medicare's clinician data lists 1 practice location in Green Bay, WI. Call before your visit to confirm the address.
- What is Mason E. Vanrossum's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Mason E. Vanrossum accept Medicare assignment?
- Yes. Medicare's clinician data says Mason E. Vanrossum 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 Mason E. Vanrossum?
- (920) 610-5119, as listed in official Medicare / NPI Registry data.
- What is Mason E. Vanrossum's NPI number?
- 1881433506. 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 Mason E. Vanrossum is enrolled with Medicare (CMS data updated 2026-10-02).
- 480 Pilgrim Way, 1300 AGreen Bay, WI 54304 (920) 610‑5119
Group practices
Medicare enrollment lists Mason E. Vanrossum as a member of this group (CMS data updated 2026-10-02).
- Nystrom and Associates Counseling WI SC107 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Green Bay
Clinicians with the same Medicare primary specialty in Green Bay, WI — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881433506 |
| 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