Averill Guo, MD
Gastroenterology Physician · Clackamas, OR
Averill Guo, MD is a gastroenterology physician with a practice address in Clackamas, Oregon, and NPI 1407353808, issued on Apr 11, 2018. Check the license (Oregon MD225737, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Averill Guo
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- MD225737 OR
Self-reported in NPPES; status is on the state search - Practice location
- 9900 SE Sunnyside RD, Clackamas, OR 97015
- Phone
- (503) 571-8240
- Enumerated
- Apr 11, 2018
- Record last updated
- Jul 21, 2025
- Medicare enrollment
- Enrolled (PECOS I20250924003920); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2018
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 281 in Oregon → Look up another NPI →
Also registered at 9900 SE Sunnyside RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Douglas Ackerman, M.D.Urology Physician1174636344
- Kamran Aghaie, MDGastroenterology Physician1104056936
- Joshua Armagost, RNRegistered Nurse First Assistant1558513135
- Jeffrey Barton, M.D.Colon & Rectal Surgery Physician1295988350
- Tracy Barton, RPHPharmacist1265804421
- Natalie Baxter, PA-CMedical Physician Assistant1265675599
Verify Averill Guo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD225737Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average gastroenterology physician in 2024
92 Medicare Part D claims for 36 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole25 claims
- Ursodiol11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $83.31
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The NorthwestPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Averill Guo among 281 gastroenterology physician records in Oregon
Averill Guo, MD is one of 281 gastroenterology physician records with a practice address in Oregon. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 95% of them.
- NPI issued2018 · 95% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2018 · median 2003 among the 201 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Oregon
There are 281 gastroenterology physician records in Oregon.
All 281 in Oregon → Every provider in Clackamas → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kamran Aghaie, MDClackamas, OR 970151104056936
- Ben Bryant, M.D.Clackamas, OR 970151215158704
- Timothy Burke, D.O.Clackamas, OR 970151215908553
- Janice ChoClackamas, OR 970151457715054
- David Clarke, MDClackamas, OR 970151306959002
- Elaine Gossman, M.D.Clackamas, OR 970151427061886
- Ronald Hapke, M.D.Clackamas, OR 970151841290699
- Noel Lee, MDClackamas, OR 970151043483779
Common questions
What is Averill Guo, MD's NPI number?
Averill Guo, MD's National Provider Identifier (NPI) is 1407353808, issued on Apr 11, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Averill Guo, MD located?
The NPPES record lists a practice address at 9900 SE Sunnyside RD, Clackamas, OR, 97015. Phone: (503) 571-8240. Providers update this record themselves, so call before visiting.
How can I verify Averill Guo, MD's license?
NPPES lists Oregon license number MD225737, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Averill Guo, MD prescribe under Medicare Part D?
In 2024, Averill Guo, MD had 92 Medicare Part D claims for 36 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.