Marshall J. Byun-Andersen, MD
Emergency Medicine Physician · Shreveport, LA
Marshall J. Byun-Andersen, MD is an emergency medicine physician with a practice address in Shreveport, Louisiana, and NPI 1265994032, issued on Apr 2, 2019. Check the license (Louisiana 330641, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marshall J. Byun-Andersen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 330641 LA
Self-reported in NPPES; status is on the state search - Practice location
- 1541 Kings Highway, Shreveport, LA 71130
- Phone
- (318) 626-0014
- Enumerated
- Apr 2, 2019
- Record last updated
- Jan 10, 2023
- Medicaid ID
- 2497995 LA
- Medicare enrollment
- Enrolled (PECOS I20220603000228); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,000 in Louisiana → Look up another NPI →
Also registered at 1541 Kings Highway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marshall J. Byun-Andersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 330641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% more Medicare Part D claims than the average emergency medicine physician in 2024
431 Medicare Part D claims for 91 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium40 claims
- Amlodipine Besylate26 claims
- Lisinopril25 claims
- Gabapentin14 claims
- Losartan Potassium14 claims
- Nifedipine Er13 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
- Highland Emergency Group, LLCBossier City, LA
- Hospital Service District NO. 1 OF Caldwell ParishColumbia, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marshall J. Byun-Andersen among 1,000 emergency medicine physician records in Louisiana
Marshall J. Byun-Andersen, MD is one of 1,000 emergency medicine physician records with a practice address in Louisiana. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2016 · median 2010 among the 653 with a school on file
- Record last updated2023 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
109 emergency medicine physician records list a practice address in Shreveport
They are 109 of the 8,660 NPPES records with a practice address in Shreveport, and 1,000 emergency medicine physician records in Louisiana.
All 1,000 in Louisiana → Every provider in Shreveport → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Kasi Addison, DOShreveport, LA 711301679034870
- Anthony Balda, DOShreveport, LA 711301699270785
- David Caltrider, MDShreveport, LA 711301013413046
- Horacio D'Agostino, MDShreveport, LA 711301407484785
- Tyler Gilmore, MDShreveport, LA 711301316575673
- Kelli Harris, MDShreveport, LA 711301770089518
- Charles Huynh, MDShreveport, LA 711301265060537
- Raymond Kessler, DOShreveport, LA 711301174084370
Common questions
What is Marshall J. Byun-Andersen, MD's NPI number?
Marshall J. Byun-Andersen, MD's National Provider Identifier (NPI) is 1265994032, issued on Apr 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marshall J. Byun-Andersen, MD located?
The NPPES record lists a practice address at 1541 Kings Highway, Shreveport, LA, 71130. Phone: (318) 626-0014. Providers update this record themselves, so call before visiting.
How can I verify Marshall J. Byun-Andersen, MD's license?
NPPES lists Louisiana license number 330641, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marshall J. Byun-Andersen, MD prescribe under Medicare Part D?
In 2024, Marshall J. Byun-Andersen, MD had 431 Medicare Part D claims for 91 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.