Quick answers
- Which hospitals does Mark Siebe work at?
- Medicare's official clinician data lists Mark Siebe at 1 hospital: Southeast Alaska Regional Health Consortium. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Siebe see patients?
- Medicare's clinician data lists 5 practice locations, including Sitka, AK. Call before your visit to confirm the address.
- What is Mark Siebe's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mark Siebe accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Siebe 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 Siebe?
- (907) 966-8611, as listed in official Medicare / NPI Registry data.
- What is Mark Siebe's NPI number?
- 1053801886. 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 Siebe works
Medicare's Facility Affiliation Data lists Mark Siebe at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Southeast Alaska Regional Health ConsortiumSitka, AK · Critical Access Hospital · CCN 021314
Practice locations
Addresses where Mark Siebe is enrolled with Medicare (CMS data updated 2026-10-02).
- 1204 Seward Ave, Searhc 1204 Behavioral Health SitkaSitka, AK 99835 (907) 966‑8611
- 1206 Seward Ave, Searhc 1206 Behavioral Health SitkaSitka, AK 99835 (907) 966‑8611
- 1209 Seward Ave, Searhc 1209 BehavioralSitka, AK 99835 (907) 966‑8611
- 222 Tongass DrSitka, AK 99835 (907) 966‑2411
- 227 Tongass DrSitka, AK 99835 (907) 966‑2411
Group practices
Medicare enrollment lists Mark Siebe as a member of this group (CMS data updated 2026-10-02).
- Southeast Alaska Regional Health Consortium369 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Sitka
Clinicians with the same Medicare primary specialty in Sitka, AK — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053801886 |
| 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