Quick answers
- Which hospitals does Maria Zayko work at?
- Medicare's official clinician data lists Maria Zayko at 5 hospitals: Arbor Health Morton Hospital, Columbia Memorial Hospital, OHSU Hospital and Clinics, PeaceHealth Southwest Medical Cente and PeaceHealth St John Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maria Zayko see patients?
- Medicare's clinician data lists 3 practice locations, including Longview, WA and Vancouver, WA. Call before your visit to confirm the address.
- What is Maria Zayko's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Maria Zayko accept Medicare assignment?
- Yes. Medicare's clinician data says Maria Zayko 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 Maria Zayko?
- (360) 414-2800, as listed in official Medicare / NPI Registry data.
- What is Maria Zayko's NPI number?
- 1184071045. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maria Zayko works
Medicare's Facility Affiliation Data lists Maria Zayko at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Arbor Health Morton HospitalMorton, WA · Critical Access Hospital · CCN 501319
- Columbia Memorial HospitalAstoria, OR · Critical Access Hospital · CCN 381320
- OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · CCN 380009
- PeaceHealth Southwest Medical CenteVancouver, WA · Acute Care Hospital · CCN 500050
- PeaceHealth St John Medical CenterLongview, WA · Acute Care Hospital · CCN 500041
Practice locations
Addresses where Maria Zayko is enrolled with Medicare (CMS data updated 2026-10-02).
- 1615 Delaware StLongview, WA 98632
- 1660 Delware StLongview, WA 98632 (360) 414‑2800
- 400 NE Mother Joseph PlVancouver, WA 98664
Group practices
Medicare enrollment lists Maria Zayko as a member of these groups (CMS data updated 2026-10-02).
- PeaceHealth195 clinicians in the group
- PeaceHealth103 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Longview
Clinicians with the same Medicare primary specialty in Longview, WA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184071045 |
| 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 2026-10-02, retrieved 2026-10-29
- 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