Nai Yen Nelson Yang, MD

Medicare activity in 2024

Official CMS public-use data for Nai Yen Nelson Yang, 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. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)567 services
2. Critical care, first 30-74 minutes (99291)36 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%
• Arthritis56%
• Ischemic heart disease50%
• Chronic kidney disease46%
• Heart failure42%

Hospitals where Nai Yen Nelson Yang works

Medicare's Facility Affiliation Data lists Nai Yen Nelson Yang 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.

• Island HospitalAnacortes, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500007
• PeaceHealth Peace Island Medical CenterFriday Harbor, WA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 501340
• PeaceHealth St Joseph Medical CenterBellingham, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500030
• PeaceHealth United General Medical CenterSedro Woolley, WA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 501329
• Skagit Valley HospitalMount Vernon, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500003

Practice locations

Addresses where Nai Yen Nelson Yang is enrolled with Medicare (CMS data updated October 2, 2026).

• 2901 Sqaulicum PkwyBellingham, WA 98225 (360) 734‑5400
• 407 14th Ave SEPuyallup, WA 98372 (253) 697‑4000

Group practices

Medicare enrollment lists Nai Yen Nelson Yang as a member of this group (CMS data updated October 2, 2026).

• South Sound Inpatient Physicians PLLC422 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Washington →

Other hospitalists in Bellingham

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

• Huy D. Pham, MD
• Andris E. Radvany, MD
• Jagroop S. Khaira, MD
• Song Y. Hong, MD
• Susan A. Holstine, DO
• Johnathan Nguyen, MD
• Martha Gillham, MD
• Paul T. Brinn, DO

All hospitalists in Bellingham →

Other clinicians in South Sound Inpatient Physicians PLLC

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

• Marissa Calzada, NP
• Matthew Boyle, DO
• Subrat Behera, MD
• Maninder Mahal, MD
• John Tso, DO
• Faisal Soliman, 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