Eugene Byun, MD
Interventional Cardiology Physician · Fullerton, CA
Eugene Byun, MD is an interventional cardiology physician with a practice address in Fullerton, California, and NPI 1104812643, issued on Sep 20, 2005. Check the license (California G82180, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eugene Byun
- Credential
- MD
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License number
- G82180 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 E Valencia Mesa Dr, Fullerton, CA 92835
- Phone
- (714) 446-5050
- Enumerated
- Sep 20, 2005
- Record last updated
- Mar 6, 2026
- Fax
- (714) 446-5150
- Medicare enrollment
- Enrolled (PECOS I20100622000646); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 632 in California → Look up another NPI →
Also registered at 100 E Valencia Mesa Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Eugene Byun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G82180Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average interventional cardiology physician in 2024
7,496 Medicare Part D claims for 904 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Atorvastatin Calcium597 claims
- Metoprolol Succinate428 claims
- Furosemide385 claims
- Eliquis360 claims
- Amlodipine Besylate350 claims
- Rosuvastatin Calcium340 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: $1,139.22
58 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 6,394 providers of this specialty with any payment received $7,062.29 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
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eugene Byun among 632 interventional cardiology physician records in California
Eugene Byun, MD is one of 632 interventional cardiology physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1992 · median 2001 among the 526 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in California
There are 632 interventional cardiology physician records in California.
All 632 in California → Every provider in Fullerton → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Fatima Hayat, MDFullerton, CA 928351205396496
- Ned Premyodhin, MDFullerton, CA 928351669976585
- Charles Suh, M.D.Fullerton, CA 928351194711184
- Shamail Tariq, MDFullerton, CA 928351033370358
- Stephen Bartz, MDAnaheim, CA 928071124199047
- Timothy McAveney, MDAnaheim, CA 928071871664789
- Harold Nguyen, MDAnaheim, CA 928071881765816
- Kenneth Whittaker, MDAnaheim, CA 928071952478190
Common questions
What is Eugene Byun, MD's NPI number?
Eugene Byun, MD's National Provider Identifier (NPI) is 1104812643, issued on Sep 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Eugene Byun, MD located?
The NPPES record lists a practice address at 100 E Valencia Mesa Dr, Fullerton, CA, 92835. Phone: (714) 446-5050. Providers update this record themselves, so call before visiting.
How can I verify Eugene Byun, MD's license?
NPPES lists California license number G82180, 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 Eugene Byun, MD prescribe under Medicare Part D?
In 2024, Eugene Byun, MD had 7,496 Medicare Part D claims for 904 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. 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.