Wai Man B. Siu, MD

Medicare activity in 2024

Official CMS public-use data for Wai Man B. Siu, 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. Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)292 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)275 services
3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)99 services
4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)43 services
5. Admn sarscov2 vacc 1 dose (90480)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 cholesterol68%
• High blood pressure65%
• Alzheimer's disease or dementia41%
• Arthritis38%
• Anxiety30%
• Depression26%

Hospitals where Wai Man B. Siu works

Medicare's Facility Affiliation Data lists Wai Man B. Siu 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.

• Legacy Good Samaritan Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380017
• Legacy Meridian Park Medical CenterTualatin, OR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 380089
• Legacy Salmon Creek Medical CenterVancouver, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500150
• OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380009
• Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380004

Practice locations

Addresses where Wai Man B. Siu is enrolled with Medicare (CMS data updated October 2, 2026).

• 1130 NW 22nd Ave, Suite 220Portland, OR 97210 (503) 413‑8988
• 1200 NW 23rd AvePortland, OR 97210 (503) 413‑7074
• 6485 SW Borland Rd, Suite FTualatin, OR 97062 (503) 413‑8018
• 8329 SW Beaverton Hillsdale HwyPortland, OR 97225 (503) 414‑5160

Group practices

Medicare enrollment lists Wai Man B. Siu as a member of this group (CMS data updated October 2, 2026).

• Legacy Clinics LLC713 clinicians in the group

Specialties

• Family Practiceprimary
• Geriatric Medicinealso

Find other Family Practice doctors in Oregon →

Other family doctors in Portland

Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.

• Judy R. Richardson, MD
• Mischa Ronick, MD
• Kyle Besaw, MD
• Richard W. Moberly, MD
• Christopher Pexton, DO
• Imelda C. Kelly, MD
• Brian J. Park, MD
• Gina Guillaume, MD

All family doctors in Portland →

Other clinicians in Legacy Clinics LLC

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

• Kathryn L. Blachly, NP
• Tina Su, MD
• Hana K. Litvin, MD
• Todd A. Hochenedel, MD
• Robert Martin, NP
• Sophia K. Davis, PA

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