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Emergency Medicine

Lucas C. Butler, MD

Works at hospitals in Seattle, WA · Washington

Summary

Dr. Lucas C. Butler, MD is an emergency medicine doctor at 925 Seneca St, Seattle, WA 98101. Phone: (206) 223-6600. Accepts Medicare assignment. In 2024, Lucas C. Butler had 326 Original Medicare patients and 372 services. NPI 1851826598. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 925 Seneca St, Seattle, WA 98101 · Directions
  • Phone: (206) 223‑6600
  • Medicare: Accepts Medicare assignment
  • Hospital: Virginia Mason Medical Center
  • Group practice: Virginia Mason Medical Center
  • Medical school: Yale University School Of Medicine · graduated 2017 (9 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Lucas C. Butler, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Lucas C. Butler accept Medicare assignment?
Yes. Medicare's clinician data says Lucas C. Butler accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Lucas C. Butler see?
In 2024, CMS data shows 326 Original Medicare patients and 372 services for Lucas C. Butler. This counts Original Medicare only and measures volume, not quality.
What is Lucas C. Butler's NPI number?
1851826598. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Lucas C. Butler, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients326
Services billed to Medicare372
Different services or procedures22
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)210 services
  2. Critical care, first 30-74 minutes (99291)66 services
  3. Emergency department visit with moderate level of medical decision making (99284)58 services
  4. Emergency department visit with low level of medical decision making (99283)12 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis45%
  • Ischemic heart disease36%
  • Chronic kidney disease34%
  • Heart failure34%

Hospitals where Lucas C. Butler works

Medicare's Facility Affiliation Data lists Lucas C. Butler at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Lucas C. Butler is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Lucas C. Butler as a member of this group (CMS data updated October 2, 2026).

  • Virginia Mason Medical Center867 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Washington →

Other emergency medicine doctors in Seattle

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

All emergency medicine doctors in Seattle →

Other clinicians in Virginia Mason Medical Center

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolYale University School Of Medicine
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1851826598
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians