Quick answers
- Where does Katrina E. Gruber see patients?
- Medicare's clinician data lists 1 practice location in Greenfield, WI. Call before your visit to confirm the address.
- What is Katrina E. Gruber's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Katrina E. Gruber accept Medicare assignment?
- Yes. Medicare's clinician data says Katrina E. Gruber 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.
- Does Katrina E. Gruber offer telehealth?
- Medicare's clinician data says Katrina E. Gruber offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Katrina E. Gruber?
- (414) 424-2445, as listed in official Medicare / NPI Registry data.
- What is Katrina E. Gruber's NPI number?
- 1063101723. 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 Katrina E. Gruber is enrolled with Medicare (CMS data updated 2026-10-02).
- 4131 W Loomis Rd, Suite 120Greenfield, WI 53221 (414) 424‑2445
Group practices
Medicare enrollment lists Katrina E. Gruber 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 Greenfield
Clinicians with the same Medicare primary specialty in Greenfield, WI — not a recommendation.
Clinician information
| Graduation year | 2021 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1063101723 |
| 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