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Hospitalist

Linnet N. Masese, MD

Works at hospitals in Issaquah, WA · Seattle, WA · Washington

Summary

Linnet N. Masese, MD (Hospitalist) is listed by Medicare at 3 hospitals in Issaquah, WA and Seattle, WA. NPI 1134782212. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Linnet N. Masese, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

HospitalistPrimary specialty
YesAccepts Medicare assignment
22Years since medical school (graduated 2004)
FemaleGender (as listed)
Swedish Health ServicesGroup practice

Quick answers

Which hospitals does Linnet N. Masese work at?
Medicare's official clinician data lists Linnet N. Masese at 3 hospitals: Swedish Issaquah, Swedish Medical Center and Swedish Medical Center / Cherry Hill. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Linnet N. Masese see patients?
Medicare's clinician data lists 1 practice location in Seattle, WA. Call before your visit to confirm the address.
What is Linnet N. Masese's specialty?
Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
Does Linnet N. Masese accept Medicare assignment?
Yes. Medicare's clinician data says Linnet N. Masese 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 Linnet N. Masese?
(206) 386-6000, as listed in official Medicare / NPI Registry data.
What is Linnet N. Masese's NPI number?
1134782212. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Linnet N. Masese works

Medicare's Facility Affiliation Data lists Linnet N. Masese at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Linnet N. Masese is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Linnet N. Masese as a member of this group (CMS data updated 2026-10-02).

  • Swedish Health Services1,037 clinicians in the group

Specialties

Find other Hospitalist doctors in Washington →

Other hospitalists in Seattle

Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.

All hospitalists in Seattle →

Clinician information

CredentialMD
Graduation year2004
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1134782212
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians