Quick answers
- Does Anya S. Kusmierski accept Medicare assignment?
- Medicare's clinician data says Anya S. Kusmierski may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Anya S. Kusmierski's NPI number?
- 1285898932. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Anya S. Kusmierski works
Medicare's Facility Affiliation Data lists Anya S. Kusmierski 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.
- Contra Costa Regional Medical CenterMartinez, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050276
Practice locations
Addresses where Anya S. Kusmierski is enrolled with Medicare (CMS data updated October 2, 2026).
- 331 C StMartinez, CA 94553
Specialties
- Mental Health Counselorprimary
Find other clinicians: Mental Health Counselor, California →
Other mental health counselors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Graduation year | 2004 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1285898932 |
| 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