Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Critical Care (Intensivists)

Jason R. Leong, DO

Works at hospitals in Portland, OR · Tualatin, OR · Vancouver, WA · Oregon, Washington

Summary

Dr. Jason R. Leong, DO is a critical care doctor at 1015 NW 22nd Ave, Portland, OR 97210. Phone: (503) 413-7711. Accepts Medicare assignment. In 2024, Jason R. Leong had 79 Original Medicare patients and 179 services. NPI 1982623674. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Jason R. Leong, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jason R. Leong accept Medicare assignment?
Yes. Medicare's clinician data says Jason R. Leong accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Jason R. Leong see?
In 2024, CMS data shows 79 Original Medicare patients and 179 services for Jason R. Leong. This counts Original Medicare only and measures volume, not quality.
What is Jason R. Leong's NPI number?
1982623674. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Jason R. 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.

Original Medicare patients79
Services billed to Medicare179
Different services or procedures18
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Critical care, first 30-74 minutes (99291)94 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 cholesterol71%
  • Heart failure67%
  • Chronic kidney disease54%
  • Ischemic heart disease52%
  • Anxiety52%

Hospitals where Jason R. Leong works

Medicare's Facility Affiliation Data lists Jason R. 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.

Practice locations

Addresses where Jason R. Leong is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Jason R. Leong as a member of these groups (CMS data updated October 2, 2026).

  • Legacy Clinics LLC713 clinicians in the group
  • Legacy Salmon Creek Hospital301 clinicians in the group

Specialties

Find other Critical Care (Intensivists) doctors in Oregon →

Other critical care doctors in Portland

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

All critical care doctors in Portland →

Other clinicians in Legacy Clinics LLC

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

Clinician information

CredentialDO
Medical schoolChicago College Of Osteopathy
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1982623674
CorrectionsReport an error or suggest an update →

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