Dr. Marshall J. Byun-Andersen, MD
- Medicare services, 2024
- 277
- Medicare patients, 2024
- 179
- Part D claims, 2024
- 431
- Publications
- 1
- Hospital affiliations
- 5
- Practice address
- 1453 E Bert Kouns Industrial Drive, Shreveport, LA 71105
- Practice phone
- Call (318) 681-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Byun-Andersen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Marshall J. Byun-Andersen is an emergency medicine physician in Shreveport, Louisiana
Dr. Byun-Andersen practices at CHRISTUS Highland Medical Center in Shreveport, Louisiana, part of CHRISTUS Health.
Dr. Byun-Andersen's NPI, 1265994032, was assigned on April 2, 2019. Dr. Byun-Andersen graduated from Charles R Drew University of Medicine and Science in 2016. Dr. Byun-Andersen holds Louisiana license 330641.
- NPI
- 1265994032NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254660350
- NPI enumeration date
- April 2, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (318) 681-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marshall J. Byun-Andersen practices at CHRISTUS Highland Medical Center in Shreveport, Louisiana
Dr. Byun-Andersen's primary practice is CHRISTUS Highland Medical Center, at 1453 E Bert Kouns Industrial Drive, Shreveport, LA 71105 in Caddo Parish. The practice phone is (318) 681-5000.
- CHRISTUS Highland Medical Center1453 E Bert Kouns Industrial Drive, Shreveport, LA 71105 · Caddo ParishPhone(318) 681-5000
Source: Dmand AI Affiliation Data
Dr. Marshall J. Byun-Andersen is affiliated with 8 sites of care and 7 medical groups
Dr. Byun-Andersen's primary practice is CHRISTUS Highland Medical Center in Shreveport, Louisiana, part of CHRISTUS Health. Dr. Byun-Andersen is also affiliated with Willis Knighton North. The medical group on file is Concord Medical Group. Dmand AI also links Dr. Byun-Andersen to 3 more hospitals, 6 medical groups and 3 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marshall J. Byun-Andersen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Byun-Andersen practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHRISTUS Highland Medical Center | Available with a free account |
| +7 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marshall J. Byun-Andersen is one of 809 emergency medicine physicians in Louisiana
Emergency medicine is Dr. Byun-Andersen's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Byun-Andersen is licensed in Louisiana.
Specialties and state licenses
- Emergency medicine, LouisianaPrimary
Emergency medicine physicians near Dr. Byun-Andersen
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marshall J. Byun-Andersen billed Medicare for 277 services in 2024
CMS data shows 277 Medicare services from Dr. Byun-Andersen across 4 procedure codes in 2024, for 179 Medicare patients. Medicare paid $24,209 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Byun-Andersen's Medicare services by type, 2024
- Office and hospital visits178
- Tests and treatments99
Dr. Byun-Andersen compared with the Louisiana median for emergency medicine physicians, 2024
- Dr. Byun-Andersen
- Louisiana median
- Medicare services
- 277vs 19443% above
- Medicare patients
- 179vs 178Close to median
- Part D claims
- 144vs 8276% above
Medians across 793 emergency medicine physicians in Louisiana with Dmand AI profiles that report each measure.
Dr. Byun-Andersen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Byun-Andersen and other emergency medicine physicians in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marshall J. Byun-Andersen treated 179 Medicare patients in 2024, average age 76
CMS counts 179 Medicare patients who saw Dr. Byun-Andersen in 2024. The largest group is 75 to 84, with 62 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.87, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Byun-Andersen's median patient age at 52, with 63% women.
Dr. Byun-Andersen's Medicare patients by age, 2024
Dr. Byun-Andersen's Medicare patients by sex, 2024
- Women10760%
- Men7240%
Chronic conditions among Dr. Byun-Andersen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Ischemic heart disease49%
- Diabetes45%
- Mood disorders42%
- Depression41%
- Anxiety39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Byun-Andersen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women63%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marshall J. Byun-Andersen wrote 431 Medicare Part D claims in 2024
In 2024, Dr. Byun-Andersen wrote 431 Medicare Part D claims for 91 patients. 86% of them were for generic drugs. CMS names the drug for 144 of them, across 7 drugs with 11 or more claims each, at $1,486 in total drug cost. In 2023, CMS named 424 claims across 17 drugs.
Dr. Byun-Andersen's Part D claims by kind of drug, 2024
- Generic370 claims86%
- Brand-name and other61 claims14%
Dr. Byun-Andersen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Byun-Andersen's Part D claims, 2024
- Antibiotics5%20 of 431 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4242024: 14466%
Drugs named by CMS: 7 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Marshall J. Byun-Andersen takes part in Medicare
Dr. Byun-Andersen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Marshall J. Byun-Andersen has 1 publication on record
Dmand AI links 1 paper to Dr. Byun-Andersen in 2025. Dr. Byun-Andersen's most frequent co-authors are Kelly S. Bihm, MD, John J. Felty, MD and Danielle B. Handrop, MD.
Dr. Byun-Andersen's most frequent co-authors
Recent publications by Dr. Byun-Andersen
See who Dr. Byun-Andersen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Byun-Andersen works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marshall J. Byun-Andersen received $16 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Byun-Andersen from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $16.
Companies that paid Dr. Byun-Andersen the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marshall J. Byun-Andersen graduated from Charles R Drew University of Medicine and Science
Dr. Byun-Andersen graduated from Charles R Drew University of Medicine and Science in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Marshall J. Byun-Andersen accepts plans from 11 insurance carriers
Dr. Byun-Andersen is in network with 11 carriers, including United Healthcare, Aetna and AR State Medicaid. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- United Healthcare
- Aetna
- AR State Medicaid
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Blue Cross and Blue Shield of Louisiana
- Blue Cross Blue Shield of Michigan
- CMS Medicare
- +3 more carriersWith a free account
Plan types Dr. Byun-Andersen accepts, by number of carriers
- HMO5
- POS3
- EPO2
- Medicare2
- PPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marshall J. Byun-Andersen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marshall J. Byun-Andersen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Marshall J. Byun-Andersen's NPI number?
Dr. Marshall J. Byun-Andersen's NPI number is 1265994032. It was assigned on April 2, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Marshall J. Byun-Andersen?
Dr. Marshall J. Byun-Andersen is an emergency medicine physician in Shreveport, Louisiana. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Marshall J. Byun-Andersen practice?
Dr. Byun-Andersen practices at 1453 E Bert Kouns Industrial Drive, Shreveport, LA 71105. Dr. Byun-Andersen's primary practice is CHRISTUS Highland Medical Center in Shreveport, Louisiana, part of CHRISTUS Health. Dmand AI also links Dr. Byun-Andersen to 3 hospitals, 6 medical groups and 3 group practices and clinics.
What is Dr. Marshall J. Byun-Andersen's office phone number?
The practice phone on file for Dr. Byun-Andersen is (318) 681-5000.
What is Dr. Marshall J. Byun-Andersen's medical license number?
Dr. Byun-Andersen holds Louisiana license 330641.
Which hospitals is Dr. Marshall J. Byun-Andersen affiliated with?
Dr. Byun-Andersen practices at CHRISTUS Highland Medical Center in Shreveport, Louisiana. Dr. Byun-Andersen is also affiliated with Willis Knighton North. Dmand AI links Dr. Byun-Andersen to 3 more hospitals.
What medical group is Dr. Marshall J. Byun-Andersen part of?
Dr. Byun-Andersen is linked to Concord Medical Group. Dmand AI links Dr. Byun-Andersen to 6 more medical groups.
Does Dr. Marshall J. Byun-Andersen accept Medicare?
Yes. CMS data shows Dr. Byun-Andersen billed Medicare for 277 services in 2024, and Dr. Byun-Andersen accepts Medicare assignment.
How many Medicare patients does Dr. Marshall J. Byun-Andersen see?
CMS counts 179 Medicare patients who saw Dr. Byun-Andersen in 2024, with an average age of 76.
What services does Dr. Marshall J. Byun-Andersen bill to Medicare?
In 2024, Dr. Byun-Andersen's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Show 7 more questionsShow fewer questions
Where did Dr. Marshall J. Byun-Andersen go to medical school?
Dr. Byun-Andersen graduated from Charles R Drew University of Medicine and Science in 2016.
What drugs does Dr. Marshall J. Byun-Andersen prescribe most?
In 2024 Medicare Part D data, Dr. Byun-Andersen's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Marshall J. Byun-Andersen received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Byun-Andersen from 1 company from 2023 to 2023. The largest total came from Pfizer Inc.
How long has Dr. Marshall J. Byun-Andersen been practicing?
Dr. Byun-Andersen graduated from medical school in 2016, 10 years ago.
Does Dr. Marshall J. Byun-Andersen do research?
Dmand AI links 1 publication to Dr. Byun-Andersen.
Who does Dr. Marshall J. Byun-Andersen publish with?
Dr. Byun-Andersen's most frequent co-authors are Kelly S. Bihm, MD (1 shared paper), John J. Felty, MD (1 shared paper) and Danielle B. Handrop, MD (1 shared paper).
What insurance does Dr. Marshall J. Byun-Andersen accept?
Dr. Byun-Andersen is in network with 11 carriers, including United Healthcare, Aetna and AR State Medicaid. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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