Quick answers
- Which hospitals does Mark T. Ellestad work at?
- Medicare's official clinician data lists Mark T. Ellestad at 3 hospitals: Harborview Medical Center, Highline Medical Center and St Francis Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark T. Ellestad see patients?
- Medicare's clinician data lists 2 practice locations, including Bremerton, WA and Seattle, WA. Call before your visit to confirm the address.
- What is Mark T. Ellestad's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Mark T. Ellestad accept Medicare assignment?
- Yes. Medicare's clinician data says Mark T. Ellestad 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 Mark T. Ellestad?
- (360) 516-0607, as listed in official Medicare / NPI Registry data.
- What is Mark T. Ellestad's NPI number?
- 1891087136. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark T. Ellestad works
Medicare's Facility Affiliation Data lists Mark T. Ellestad at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Harborview Medical CenterSeattle, WA · Acute Care Hospital · CCN 500064
- Highline Medical CenterBurien, WA · Acute Care Hospital · CCN 500011
- St Francis Community HospitalFederal Way, WA · Acute Care Hospital · CCN 500141
Practice locations
Addresses where Mark T. Ellestad is enrolled with Medicare (CMS data updated 2026-10-02).
- 2520 Cherry AveBremerton, WA 98310 (360) 516‑0607
- 325 9th AveSeattle, WA 98104 (206) 731‑3000
Group practices
Medicare enrollment lists Mark T. Ellestad as a member of these groups (CMS data updated 2026-10-02).
- The Association of University Physicians3,535 clinicians in the group
- Franciscan Medical Group1,421 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Washington
Clinicians with the same Medicare primary specialty in Washington — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891087136 |
| 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