Quick answers
- Which hospitals does Timothy L. Larson work at?
- Medicare's official clinician data lists Timothy L. Larson at 5 hospitals: Arbor Health Morton Hospital, Overlake Hospital Medical Center & Clinics, Providence Centralia Hospital, Providence Regional Medical Center Everett and Providence St Peter Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy L. Larson see patients?
- Medicare's clinician data lists 9 practice locations, including Kirkland, WA, Everett, WA and Redmond, WA. Call before your visit to confirm the address.
- What is Timothy L. Larson's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Timothy L. Larson accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy L. Larson 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 Timothy L. Larson?
- (425) 899-1800, as listed in official Medicare / NPI Registry data.
- What is Timothy L. Larson's NPI number?
- 1679500433. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy L. Larson works
Medicare's Facility Affiliation Data lists Timothy L. Larson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Arbor Health Morton HospitalMorton, WA · Critical Access Hospital · CCN 501319
- Overlake Hospital Medical Center & ClinicsBellevue, WA · Acute Care Hospital · CCN 500051
- Providence Centralia HospitalCentralia, WA · Acute Care Hospital · CCN 500019
- Providence Regional Medical Center EverettEverett, WA · Acute Care Hospital · CCN 500014
- Providence St Peter HospitalOlympia, WA · Acute Care Hospital · CCN 500024
Practice locations
Addresses where Timothy L. Larson is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 12040 NE 128th StKirkland, WA 98034 (425) 899‑1800
- 13020 Meridian Ave SEverett, WA 98208 (425) 357‑3960
- 18100 NE Union Hill RdRedmond, WA 98052 (425) 498‑2030
- 21700 Hwy 99Edmonds, WA 98026 (425) 297‑6200
- 2260 W Lake Sammamish Pkwy SEBellevue, WA 98008 · Radia Imaging Center Holdings LLC (425) 563‑1500
Group practices
Medicare enrollment lists Timothy L. Larson as a member of these groups (CMS data updated 2026-10-02).
- Swedish Health Services1,037 clinicians in the group
- Optum Care Washington PLLC683 clinicians in the group
- Radia Inc P S277 clinicians in the group
- Swedish Health Services154 clinicians in the group
- Swedish Radia Imaging Center at Edmonds LLC112 clinicians in the group
- South Sound Radiologists Inc P S78 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Kirkland
Clinicians with the same Medicare primary specialty in Kirkland, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679500433 |
| 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