Duy Nelson Dao, DO

Medicare activity in 2024

Official CMS public-use data for Duy Nelson Dao, 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. Emergency department visit with high level of medical decision making (99285)199 services
2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)171 services
3. Emergency department visit with moderate level of medical decision making (99284)60 services
4. Critical care, first 30-74 minutes (99291)52 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 cholesterol64%
• Arthritis45%
• Chronic kidney disease38%
• Ischemic heart disease33%
• Heart failure33%

Hospitals where Duy Nelson Dao works

Medicare's Facility Affiliation Data lists Duy Nelson Dao 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.

• PeaceHealth St John Medical CenterLongview, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500041

Practice locations

Addresses where Duy Nelson Dao is enrolled with Medicare (CMS data updated October 2, 2026).

• 1615 Delaware StLongview, WA 98632 (360) 414‑2000
• 1812 S J St, Suite 120Tacoma, WA 98405 (253) 428‑2200

Group practices

Medicare enrollment lists Duy Nelson Dao as a member of these groups (CMS data updated October 2, 2026).

• Franciscan Medical Group1,421 clinicians in the group
• Cep America LLC1,023 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Washington →

Other emergency medicine doctors in Longview

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

• Erik L. Egsieker, MD
• Marcus S. Myers, DO
• Kyle S. Norman, MD
• San Francisco Nguyen, DO
• Glenn E. Heimburger, MD
• Thomas Maehara, DO
• Arjun Dhanik, MD
• Jonathan Im, MD

All emergency medicine doctors in Longview →

Other clinicians in Franciscan Medical Group

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

• Jenifer L. Henderson, MD
• Jeffrey S. Rose, MD
• Megan M. Cecchini, MD
• Matthew F. Hoefler, MD
• Archana R. Rajdev, MD
• Meaghan W. Omalley, 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