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Emergency Medicine

William F. Dirkes, MD

Works at hospitals in Olympia, WA · Washington

Summary

Dr. William F. Dirkes, MD is an emergency medicine doctor at 413 Lilly Rd NE, Olympia, WA 98506. Phone: (360) 493-4554. Accepts Medicare assignment. In 2024, William F. Dirkes had 422 Original Medicare patients and 724 services. NPI 1154668770. 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: 413 Lilly Rd NE, Olympia, WA 98506 · Directions
  • Phone: (360) 493‑4554
  • Medicare: Accepts Medicare assignment
  • Hospital: Providence St Peter Hospital
  • Group practice: Olympia Emergency Services PLLC
  • Medical school: Georgetown University School Of Medicine · graduated 2013 (13 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about William F. Dirkes, 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 William F. Dirkes accept Medicare assignment?
Yes. Medicare's clinician data says William F. Dirkes 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 William F. Dirkes see?
In 2024, CMS data shows 422 Original Medicare patients and 724 services for William F. Dirkes. This counts Original Medicare only and measures volume, not quality.
What is William F. Dirkes's NPI number?
1154668770. 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 William F. Dirkes, 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 patients422
Services billed to Medicare724
Different services or procedures42
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)266 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)215 services
  3. Critical care, first 30-74 minutes (99291)101 services
  4. Emergency department visit with moderate level of medical decision making (99284)54 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 cholesterol72%
  • Arthritis45%
  • Diabetes43%
  • Chronic kidney disease39%
  • Ischemic heart disease36%

Hospitals where William F. Dirkes works

Medicare's Facility Affiliation Data lists William F. Dirkes 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 William F. Dirkes is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists William F. Dirkes as a member of this group (CMS data updated October 2, 2026).

  • Olympia Emergency Services PLLC29 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Washington →

Other emergency medicine doctors in Olympia

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

All emergency medicine doctors in Olympia →

Other clinicians in Olympia Emergency Services PLLC

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

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year2013 (13 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1154668770
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