Quick answers
- Does Katarzyna Gaj-Blum accept Medicare assignment?
- Yes. Medicare's clinician data says Katarzyna Gaj-Blum 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 Katarzyna Gaj-Blum's NPI number?
- 1265269922. 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 Katarzyna Gaj-Blum is enrolled with Medicare (CMS data updated October 2, 2026).
- 10400 NE 4th St, Suite 2250Bellevue, WA 98004 (888) 663‑6331
- 1600 7th Ave, Suite 110Seattle, WA 98101 (888) 663‑6331
Group practices
Medicare enrollment lists Katarzyna Gaj-Blum as a member of this group (CMS data updated October 2, 2026).
- One Medical Group Inc331 clinicians in the group
Specialties
- Mental Health Counselorprimary
Find other clinicians: Mental Health Counselor, Washington →
Other mental health counselors in Bellevue
Clinicians with the same Medicare primary specialty in Bellevue, WA — not a recommendation.
Other clinicians in One Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2020 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265269922 |
| 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