MARSHALL J. BYUN-ANDERSEN MD
NPI 1265994032
Emergency Medicine in Shreveport, LA
About Marshall J. Byun-andersen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARSHALL J. BYUN-ANDERSEN MD (NPI 1265994032) is an individual emergency medicine provider in Shreveport, Louisiana, licensed in Louisiana (330641) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Christus St Frances Cabrini Hospital, and maintains a secondary practice location in Vivian.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marshall J. Byun-andersen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Marshall Byun-andersen reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Shreveport, LA 71105
- Reassigned Medicare billing, Louisiana enrollment
- 90 clinicians in this Medicare group
Shreveport, LA 71103
- Reassigned Medicare billing, Louisiana enrollment
- 104 clinicians in this Medicare group
Vivian, LA 71082
- Reassigned Medicare billing, Louisiana enrollment
- 27 clinicians in this Medicare group
Columbia, LA 71418
- Reassigned Medicare billing, Louisiana enrollment
- 44 clinicians in this Medicare group
Oakdale, LA 71463
- Reassigned Medicare billing, Louisiana enrollment
- 110 clinicians in this Medicare group
Ville Platte, LA 70586
- Reassigned Medicare billing, Louisiana enrollment
- 67 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Louisiana enrollment
- 214 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Christus St Frances Cabrini Hospital
Acute Care Hospitals · Alexandria, LAChristus Shreveport-Bossier Health System
Acute Care Hospitals · Shreveport, LAWillis Knighton Medical Center
Acute Care Hospitals · Shreveport, LACitizens Medical Center
Acute Care Hospitals · Columbia, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 71130 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SHREVEPORT, LA 71130
SHREVEPORT, LA 71130
SHREVEPORT, LA 71130
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Marshall Byun-andersen's NPI number?
The NPI number for Marshall Byun-andersen is 1265994032. It was assigned to this individual provider in the NPPES registry on April 2, 2019.
Where is Marshall Byun-andersen located?
Marshall Byun-andersen practices at 1541 Kings Highway Family Medicine, Shreveport, LA 71130. The listed phone number is (318) 626-0014.
What is Marshall Byun-andersen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Marshall Byun-andersen enrolled in Medicare?
Yes. Marshall Byun-andersen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Marshall Byun-andersen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marshall Byun-andersen reassigns Medicare benefits to 7 organizations: Highland Emergency Group, LLC (Shreveport, LA), Cross Lake Emergency Group, LLC (Shreveport, LA), North Caddo Hospital Service District (Vivian, LA), Hospital Service District No. 1 Of Caldwell Parish (Columbia, LA), Oakdale Ess LLC (Oakdale, LA) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marshall Byun-andersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marshall Byun-andersen accept?
Health plans from CHRISTUS Health Plan and HMO Louisiana list Marshall Byun-andersen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Marshall Byun-andersen affiliated with any hospitals?
According to CMS data, Marshall Byun-andersen is affiliated with Christus St Frances Cabrini Hospital, Christus Shreveport-Bossier Health System, Willis Knighton Medical Center and Citizens Medical Center.
When was this NPI record last updated?
The NPPES record for Marshall Byun-andersen was last updated on January 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Marshall J. Byun-Andersen, MD · NPI 1265994032
Emergency Medicine physician in Shreveport, Louisiana. Individual provider, active in the CMS NPPES registry since April 2, 2019.
## Identity
- **NPI:** 1265994032 (Entity type: Individual)
- **Enumerated:** April 2, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 330641 (Louisiana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1541 KINGS HIGHWAY, FAMILY MEDICINE, Shreveport, LA 71130-3932
- **Phone:** (318) 626-0014
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Highland Emergency Group, LLC (NPI 1154913861, Shreveport, LA); Cross Lake Emergency Group, LLC (NPI 1013497114, Shreveport, LA); North Caddo Hospital Service District (NPI 1326016684, Vivian, LA); Hospital Service District No. 1 Of Caldwell Parish (NPI 1306865761, Columbia, LA); Oakdale Ess LLC (NPI 1750785119, Oakdale, LA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** January 10, 2023
- **Other identifiers:** Medicaid 2497995 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1265994032) · Data from the CMS NPPES public registry.