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

Averill Guo, MD

Individual provider Gastroenterology Physician · NPI 1407353808

Averill Guo, MD practises Gastroenterology in Clackamas, Oregon. Graduated from Columbia University College of Physicians and Surgeons in 2018, 8 years ago. Practices with Kaiser Foundation Health Plan of the Northwest, a 1,811-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
8
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
OR
In the registry since
2018
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

9900 SE Sunnyside Rd
Clackamas, OR 97015-9777
Phone: (503) 571-8240
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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 MD225737 (OR)

Record details

NPI number1407353808
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 11, 2018
Last updated in NPPESJuly 21, 2025
Certification dateJuly 21, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 2018 (8 years in practice)
Group practice Kaiser Foundation Health Plan Of The Northwest — 1811 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 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.

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Travel and Lodging $2,887 13 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $720 6 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Kaiser Foundation Health Plan of the Northwest

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1811 clinicians in the practice; 12 are shown here.

Other providers in Clackamas