Karen Bui, MD
Student in an Organized Health Care Education/Training Program · Santa Ana, CA
Karen Bui, MD is a student in an organized health care education/training program with a practice address in Santa Ana, California, and NPI 1124604954, issued on Mar 22, 2021. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Bui
- Credential
- MD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 800 N Main St, Santa Ana, CA 92701
- Phone
- (657) 282-6355
- Enumerated
- Mar 22, 2021
- Record last updated
- Oct 15, 2024
- Medicare enrollment
- Enrolled (PECOS I20241021000509); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2024
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 40,652 in California → Look up another NPI →
Also registered at 800 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Joanne Azer, D.O.Family Medicine Physician1275822850
- Jacob Beene, MDStudent in an Organized Health Care Education/Training Program1477491363
- Karen Brandeis, F.N.P.Family Nurse Practitioner1336426840
- Lisa Camino, LCSWSocial Worker1801077706
Verify Karen Bui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average student in an organized health care education/training program in 2024
274 Medicare Part D claims for 121 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium23 claims
- Amlodipine Besylate19 claims
- Losartan Potassium14 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 one group practice
- Southern California Permanente Medical GroupHarbor City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Bui among 40,652 student in an organized health care education/training program records in California
Karen Bui, MD is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 28% of them.
- NPI issued2021 · 28% of these records are older, 66% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 6% of these records are
- Graduated2024 · median 2017 among the 2,409 with a school on file
- Record last updated2024 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
188 student in an organized health care education/training program records list a practice address in Santa Ana
They are 188 of the 8,904 NPPES records with a practice address in Santa Ana, and 40,652 student in an organized health care education/training program records in California.
All 40,652 in California → Every provider in Santa Ana → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Alicia AcunaSanta Ana, CA 927011245612597
- Kaley ClenneySanta Ana, CA 927011477076438
- Olivia De La Piedra-MorrisseySanta Ana, CA 927011902372154
- Martha Del BosqueSanta Ana, CA 927011326604539
- Whitney DunbarSanta Ana, CA 927011457667131
- Skyler HarrisSanta Ana, CA 927011265960330
- Rye-Ji KimSanta Ana, CA 927011487065710
- Courtney KringSanta Ana, CA 927011205304102
Common questions
What is Karen Bui, MD's NPI number?
Karen Bui, MD's National Provider Identifier (NPI) is 1124604954, issued on Mar 22, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Karen Bui, MD located?
The NPPES record lists a practice address at 800 N Main St, Santa Ana, CA, 92701. Phone: (657) 282-6355. Providers update this record themselves, so call before visiting.
How can I verify Karen Bui, MD's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Bui, MD prescribe under Medicare Part D?
In 2024, Karen Bui, MD had 274 Medicare Part D claims for 121 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.