Aileen Bui, MD
Gastroenterology Physician · Duarte, CA
Aileen Bui, MD is a gastroenterology physician with a practice address in Duarte, California, and NPI 1639673478, issued on Mar 19, 2018. Check the license (California A165723, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aileen Bui
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A165723 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Duarte RD, Duarte, CA 91010
- Phone
- (800) 826-4673
- Enumerated
- Mar 19, 2018
- Record last updated
- Jul 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20240423002428); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 1500 Duarte RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Aileen Bui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A165723Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average gastroenterology physician in 2024
22 Medicare Part D claims for 14 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
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: $2,122.64
14 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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
- City OF Hope Medical FoundationDuarte, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aileen Bui among 2,140 gastroenterology physician records in California
Aileen Bui, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 94% of them.
- NPI issued2018 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2018 · median 2002 among the 1,538 with a school on file
- Record last updated2025 · 60% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Duarte → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Donald David, MDDuarte, CA 910101588767131
- Jeremiah Donovan, MDDuarte, CA 910101164406500
- Victoria Green, MDDuarte, CA 910101184251712
- Gregory Idos, M.D.Duarte, CA 910101770769937
- Aung Kaung, M.DDuarte, CA 910101285992644
- Trilokesh Kidambi, MDDuarte, CA 910101679849574
- James Lin, MDDuarte, CA 910101770743502
- Evan Mosier, M.D.Duarte, CA 910101598152365
Common questions
What is Aileen Bui, MD's NPI number?
Aileen Bui, MD's National Provider Identifier (NPI) is 1639673478, issued on Mar 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Aileen Bui, MD located?
The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (800) 826-4673. Providers update this record themselves, so call before visiting.
How can I verify Aileen Bui, MD's license?
NPPES lists California license number A165723, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aileen Bui, MD prescribe under Medicare Part D?
In 2024, Aileen Bui, MD had 22 Medicare Part D claims for 14 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.