Russell M. Leong, DO

Medicare activity in 2024

Official CMS public-use data for Russell M. Leong, 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 50 minutes (99233)82 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)68 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)59 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)49 services
5. Dialysis services, 2-3 physician visits per month (20 years or older) (90961)47 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%
• Chronic kidney disease75%
• Diabetes62%
• Heart failure56%
• Arthritis48%

Hospitals where Russell M. Leong works

Medicare's Facility Affiliation Data lists Russell M. Leong 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.

• Grays Harbor Community HospitalAberdeen, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500031
• Mason General Hospital & Family of ClinicsShelton, WA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 501336
• Providence Centralia HospitalCentralia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500019
• Providence St Peter HospitalOlympia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500024
• Tacoma General Allenmore HospitalTacoma, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500129

Practice locations

Addresses where Russell M. Leong is enrolled with Medicare (CMS data updated October 2, 2026).

• 3525 Ensign Rd NE, Suite KOlympia, WA 98506

Group practices

Medicare enrollment lists Russell M. Leong as a member of this group (CMS data updated October 2, 2026).

• Memorial Nephrology Associates PLLC9 clinicians in the group

Specialties

• Nephrologyprimary

Find other Nephrology doctors in Washington →

Other nephrologists in Olympia

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

• Christopher P. Burtner, MD
• Vo D. Nguyen, MD
• Michael G. Mondress, MD
• Julia P. Anuras, MD
• Niranjan Sivakumar, MD
• Tsering Dhondup, MD
• Thuan V. Nguyen, MD
• Hetal Shah, MD

All nephrologists in Olympia →

Other clinicians in Memorial Nephrology Associates PLLC

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

• Mary Jennings, MNT
• Thuan V. Nguyen, MD
• Hetal Shah, MD
• Seth M. Thaler, MD
• Niranjan Sivakumar, MD
• Tsering Dhondup, 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