Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Wayne Wong, MD

Individual provider Gastroenterology Physician · NPI 1275676843

Wayne Wong, MD practises Gastroenterology in Portland, Oregon. Graduated from Oregon Health Sciences University School of Medicine in 1987, 39 years ago. Practices with Mayo Clinic Health System-Southwest Minnesota Region, a 667-clinician group and accepts Medicare assignment. Licensed in Minnesota, Oregon and Washington.

Years since qualifying
39
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
MN, OR, WA
In the registry since
2007
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

3500 N Interstate Ave
Portland, OR 97227-1196
Phone: (503) 331-6170
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD16753 (OR)
Gastroenterology Physician Taxonomy 207RG0100X · Licence MD00034986 (WA)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 81010 (MN)

Record details

NPI number1275676843
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 14, 2007
Last updated in NPPESNovember 11, 2025
Certification dateNovember 11, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Mayo Clinic Health System-Southwest Minnesota Region — 667 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 21 times · 48th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients76
Services billed 104 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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 Mayo Clinic Health System-Southwest Minnesota Region

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 667 clinicians in the practice; 12 are shown here.

Other providers in Portland