Hoi-Wing S. Yim, MD

Medicare activity in 2024

Official CMS public-use data for Hoi-Wing S. Yim, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)222 services
2. Hospital discharge day management, more than 30 minutes (99239)49 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)34 services
4. Hospital discharge day management, 30 minutes or less (99238)27 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%
• Ischemic heart disease47%
• Heart failure46%
• Chronic kidney disease44%
• Atrial fibrillation43%

Hospitals where Hoi-Wing S. Yim works

Medicare's Facility Affiliation Data lists Hoi-Wing S. Yim 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.

• Yakima Valley MemorialYakima, WA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: not listed by Medicare · CCN 500036

Practice locations

Addresses where Hoi-Wing S. Yim is enrolled with Medicare (CMS data updated October 2, 2026).

• 2811 Tieton DrYakima, WA 98902 (509) 575‑8000

Group practices

Medicare enrollment lists Hoi-Wing S. Yim as a member of this group (CMS data updated October 2, 2026).

• Yakima Valley Memorial Physicians391 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Washington →

Other internal medicine doctors in Yakima

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

• Piper A. Olmsted, DO
• Daniel A. Cole, DO
• Yunegwang Nam
• Navraj S. Gill, MD
• Mary C. Davies, MD
• Adrian Roy P. Crisostomo, MD
• Xiao Ling, MD
• Silvia Labes, MD

All internal medicine doctors in Yakima →

Other clinicians in Yakima Valley Memorial Physicians

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

• Piper A. Olmsted, DO
• Siva K. Mannem, MD
• Paul M. Guernsey, DO
• Megan Zak, MD
• Matthew D. Turnbull, CNA
• June Garcia Llana, CNA

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