Quick answers
- Which hospitals does Sara Grethlein work at?
- Medicare's official clinician data lists Sara Grethlein at 2 hospitals: PeaceHealth Ketchikan Medical Center and Swedish Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sara Grethlein see patients?
- Medicare's clinician data lists 1 practice location in Ketchikan, AK. Call before your visit to confirm the address.
- What is Sara Grethlein's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Sara Grethlein accept Medicare assignment?
- Yes. Medicare's clinician data says Sara Grethlein 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 Sara Grethlein?
- (907) 228-8300, as listed in official Medicare / NPI Registry data.
- What is Sara Grethlein's NPI number?
- 1326083445. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sara Grethlein works
Medicare's Facility Affiliation Data lists Sara Grethlein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- PeaceHealth Ketchikan Medical CenterKetchikan, AK · Critical Access Hospital · CCN 021311
- Swedish Medical CenterSeattle, WA · Acute Care Hospital · CCN 500027
Practice locations
Addresses where Sara Grethlein is enrolled with Medicare (CMS data updated 2026-10-02).
- 3100 Tongass AveKetchikan, AK 99901 (907) 228‑8300
Group practices
Medicare enrollment lists Sara Grethlein as a member of this group (CMS data updated 2026-10-02).
- PeaceHealth70 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Alaska
Clinicians with the same Medicare primary specialty in Alaska — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1988 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326083445 |
| 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