Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Ian Leong Liao, MD

Individual provider Internal Medicine Physician · NPI 1154586105

Dr. Ian Leong Liao, MD practises Internal Medicine in Portland, Oregon. Qualified in 2007, 19 years ago. Practices with Providence Health and Services Oregon, a 1,426-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado, Georgia and Oregon.

Years since qualifying
19
Licensed in
CO, GA, OR
In the registry since
2008
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9205 SW Barnes Rd
Portland, OR 97225-6603
Phone: (503) 216-2906
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1700 E 19th St, The Dalles, OR 97058-3317 — (541) 296-7285

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD168027 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 50469 (CO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 003458 (GA)

Record details

NPI number1154586105
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2008
Last updated in NPPESApril 24, 2023
Certification dateApril 24, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Providence Health And Services Oregon — 1426 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients147
Services billed 520 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Providence Health and Services Oregon

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1426 clinicians in the practice; 12 are shown here.

Other providers in Portland