Quick answers
- Does Chelsea J. Mackay accept Medicare assignment?
- Yes. Medicare's clinician data says Chelsea J. Mackay 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 Chelsea J. Mackay's NPI number?
- 1790363448. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Chelsea J. Mackay works
Medicare's Facility Affiliation Data lists Chelsea J. Mackay 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.
- PeaceHealth St Joseph Medical CenterBellingham, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500030
Practice locations
Addresses where Chelsea J. Mackay is enrolled with Medicare (CMS data updated October 2, 2026).
- 220 Unity StBellingham, WA 98225 (360) 676‑6177
Group practices
Medicare enrollment lists Chelsea J. Mackay as a member of this group (CMS data updated October 2, 2026).
- Unity Care Northwest38 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Bellingham
Clinicians with the same Medicare primary specialty in Bellingham, WA — not a recommendation.
Other clinicians in Unity Care Northwest
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | Mercer University School Of Medicine |
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790363448 |
| 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