Diana Bui, PA-C
Family Medicine Physician · Portland, OR
Diana Bui, PA-C is a family medicine physician with a practice address in Portland, Oregon, and NPI 1154829513, issued on Jan 31, 2018. Check the license (Oregon 185674, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Diana Bui
- Credential
- PA-C
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 185674 OR
Self-reported in NPPES; status is on the state search - Practice location
- 4141 N Williams Ave Ste 9A, Portland, OR 97217
- Phone
- (888) 663-6331
- Enumerated
- Jan 31, 2018
- Record last updated
- Jul 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210708001639); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 4141 N Williams Ave Ste 9A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christine Boyer, PA-CPhysician Assistant1124420641
Verify Diana Bui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license 185674Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
149 Medicare Part D claims for 18 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- One Medical Group IncPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Bui among 2,847 family medicine physician records in Oregon
Diana Bui, PA-C is one of 2,847 family medicine physician records with a practice address in Oregon. 75% 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 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2017 · median 2009 among the 1,671 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
561 family medicine physician records list a practice address in Portland
They are 561 of the 42,088 NPPES records with a practice address in Portland, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Matthew Breeze, MDPortland, OR 972171083655609
- Simon Chan, DOPortland, OR 972171841242195
- Diego Diaz, MDPortland, OR 972171407019532
- Shauna Ensminger, MDPortland, OR 972171619960002
- Gregory Freed, M.D.Portland, OR 972171346433042
- Monique Gedenk, MDPortland, OR 972171740226745
- Janel Guyette, M.D.Portland, OR 972171205990660
- Mary Frances Lowdermilk, M.D.Portland, OR 972171245453315
Common questions
What is Diana Bui, PA-C's NPI number?
Diana Bui, PA-C's National Provider Identifier (NPI) is 1154829513, issued on Jan 31, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Diana Bui, PA-C located?
The NPPES record lists a practice address at 4141 N Williams Ave Ste 9A, Portland, OR, 97217. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Diana Bui, PA-C's license?
NPPES lists Oregon license number 185674, 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 Diana Bui, PA-C prescribe under Medicare Part D?
In 2024, Diana Bui, PA-C had 149 Medicare Part D claims for 18 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Diana Bui, PA-C's MIPS final score?
The 2023 MIPS final score is 87.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.