Khoi T. Nguyen, DO
Internal Medicine Physician · Portland, OR
Khoi T. Nguyen, DO is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1225528987, issued on May 17, 2018. Check the license (Oregon PG188435, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Khoi T. Nguyen
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- PG188435 OR
OP61166338 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9205 SW Barnes RD Ste Mt2800, Portland, OR 97225
- Phone
- (503) 216-2621
- Enumerated
- May 17, 2018
- Record last updated
- Mar 24, 2023
- Medicare enrollment
- Enrolled (PECOS I20220401002257); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 9205 SW Barnes RD Ste Mt2800
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Khoi T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license PG188435Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
313 Medicare Part D claims for 146 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Oxycodone Hcl26 claims
- Cefdinir23 claims
- Prednisone16 claims
- Atorvastatin Calcium15 claims
- Eliquis15 claims
- Pantoprazole Sodium12 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.
Bills Medicare through 2 group practices
- Providence Health And Services- WashingtonEverett, WA
- South Sound Inpatient Physicians PLLCTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Khoi T. Nguyen among 2,116 internal medicine physician records in Oregon
Khoi T. Nguyen, DO is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% 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 83% of them.
- NPI issued2018 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2018 · median 2008 among the 1,232 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Myrna Casono, MDPortland, OR 972251588666432
- Timothy Cleary, M.D.Portland, OR 972251215933411
- Cynthia Ferrier, M.D.Portland, OR 972251285607440
- Robert Fojtasek, MDPortland, OR 972251306888649
- Steven Gordon, MDPortland, OR 972251285616748
- Thomas Gragnola, MDPortland, OR 972251144220765
- Janette Green, M.D.Portland, OR 972251225029986
- Charles Kilo, M.D.Portland, OR 972251801869078
Common questions
What is Khoi T. Nguyen, DO's NPI number?
Khoi T. Nguyen, DO's National Provider Identifier (NPI) is 1225528987, issued on May 17, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Khoi T. Nguyen, DO located?
The NPPES record lists a practice address at 9205 SW Barnes RD Ste Mt2800, Portland, OR, 97225. Phone: (503) 216-2621. Providers update this record themselves, so call before visiting.
How can I verify Khoi T. Nguyen, DO's license?
NPPES lists Oregon license number PG188435, 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 Khoi T. Nguyen, DO prescribe under Medicare Part D?
In 2024, Khoi T. Nguyen, DO had 313 Medicare Part D claims for 146 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.