Quick answers
- Which hospitals does Jeff Sienkiewicz work at?
- Medicare's official clinician data lists Jeff Sienkiewicz at 2 hospitals: Deaconess Medical Center and Tacoma General Allenmore Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jeff Sienkiewicz see patients?
- Medicare's clinician data lists 3 practice locations, including Tacoma, WA, Gig Harbor, WA and Spokane, WA. Call before your visit to confirm the address.
- What is Jeff Sienkiewicz's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Jeff Sienkiewicz accept Medicare assignment?
- Yes. Medicare's clinician data says Jeff Sienkiewicz 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 Jeff Sienkiewicz?
- (253) 403-1000, as listed in official Medicare / NPI Registry data.
- What is Jeff Sienkiewicz's NPI number?
- 1487326765. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jeff Sienkiewicz works
Medicare's Facility Affiliation Data lists Jeff Sienkiewicz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Deaconess Medical CenterSpokane, WA · Acute Care Hospital · CCN 500044
- Tacoma General Allenmore HospitalTacoma, WA · Acute Care Hospital · CCN 500129
Practice locations
Addresses where Jeff Sienkiewicz is enrolled with Medicare (CMS data updated 2026-10-02).
- 311 S L StTacoma, WA 98405
- 4700 Point Fosdick DrGig Harbor, WA 98335
- 9420 N Newport Hwy, Suite 103Spokane, WA 99218 (253) 403‑1000
Group practices
Medicare enrollment lists Jeff Sienkiewicz as a member of this group (CMS data updated 2026-10-02).
- Multicare Health System2,325 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Tacoma
Clinicians with the same Medicare primary specialty in Tacoma, WA — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487326765 |
| 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