Marianne H. Yacyshyn, MD

Medicare activity in 2024

Official CMS public-use data for Marianne H. Yacyshyn, 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.

Most frequent services

1. Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes (99451)128 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)44 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)42 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)33 services
5. Critical care, first 30-74 minutes (99291)32 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%
• Stroke or mini-stroke64%
• Arthritis41%
• Depression41%
• Chronic kidney disease35%

Hospitals where Marianne H. Yacyshyn works

Medicare's Facility Affiliation Data lists Marianne H. Yacyshyn 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.

• Swedish Edmonds HospitalEdmonds, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500026
• Swedish Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500027

Practice locations

Addresses where Marianne H. Yacyshyn is enrolled with Medicare (CMS data updated October 2, 2026).

• 500 17th AveSeattle, WA 98122 (206) 320‑2000

Group practices

Medicare enrollment lists Marianne H. Yacyshyn as a member of this group (CMS data updated October 2, 2026).

• Swedish Health Services1,037 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in Washington →

Other neurologists in Seattle

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

• Lynne P. Taylor, MD
• Ami Z. Cuneo, MD
• Ravi S. Menon, MD
• Manizhe Eslami-Amirabadi, MD
• Yujie Wang, MD
• Jerry Wei, MD
• Fei Pan, MD
• Dongmei M. Liu, MD

All neurologists in Seattle →

Other clinicians in Swedish Health Services

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

• Matthew R. Crull, MD
• Samuel J. Youssef, MD
• Krist M. Aploks, MD
• Samantha V. D'Andrea, PA
• Kevin Schmidt
• Christopher D. Merifield, MD

Clinician information

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