Healthcare provider profile · identity verified

Robert P Marshburn, MD

Allopathic & Osteopathic Physicians|Internal Medicine · COMMERCE, GA · NPI 1629184395

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Robert P Marshburn, MD received $45.74 in general payments during 2025 across 2 reported records.

Phathom Pharmaceuticals, Inc. accounted for 58.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Trelegy Ellipta.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 37 claims for Trelegy Ellipta by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$45.74

2 reported records · 2 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $26.8758.8%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $18.8741.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$45.742

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $26.87 1 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $18.87 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 37
Beneficiary count suppressed
exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
37 suppressed by CMS

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
Atorvastatin CalciumAtorvastatin Calcium472123
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen45874
Levothyroxine SodiumLevothyroxine Sodium41489
OmeprazoleOmeprazole40087
Amlodipine BesylateAmlodipine Besylate35965
GabapentinGabapentin34046
AlprazolamAlprazolam31547
Tramadol HclTramadol Hcl30974
LisinoprilLisinopril24535
Rosuvastatin CalciumRosuvastatin Calcium22946
FamotidineFamotidine21829
Enalapril MaleateEnalapril Maleate21454
CarvedilolCarvedilol20534
Albuterol Sulfate HfaAlbuterol Sulfate19953
Quetiapine FumarateQuetiapine Fumarate16413
Trazodone HclTrazodone Hcl16019
Tamsulosin HclTamsulosin Hcl15329
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen15127
Metoprolol SuccinateMetoprolol Succinate14836
Citalopram HbrCitalopram Hydrobromide14523
MeloxicamMeloxicam14253
Tizanidine HclTizanidine Hcl13617
Potassium ChloridePotassium Chloride13333
Metoprolol TartrateMetoprolol Tartrate12929
AzithromycinAzithromycin12387
Metformin HclMetformin Hcl12330
HydrochlorothiazideHydrochlorothiazide12136
Sertraline HclSertraline Hcl12014
EliquisApixaban11919
Fluticasone PropionateFluticasone Propionate11956
Divalproex SodiumDivalproex Sodium114suppressed
ClopidogrelClopidogrel Bisulfate11019
FinasterideFinasteride11016
Zolpidem TartrateZolpidem Tartrate10914
Losartan PotassiumLosartan Potassium10526
ClonazepamClonazepam10218
Pantoprazole SodiumPantoprazole Sodium10028
OlanzapineOlanzapine98suppressed
Escitalopram OxalateEscitalopram Oxalate9720
MirtazapineMirtazapine92suppressed
Montelukast SodiumMontelukast Sodium9113
AtenololAtenolol8826
PrednisonePrednisone8744
LorazepamLorazepam8629
FurosemideFurosemide8130
Esomeprazole MagnesiumEsomeprazole Magnesium7813
LovastatinLovastatin7715
Buspirone HclBuspirone Hcl72suppressed
Hydralazine HclHydralazine Hcl72suppressed
Memantine HclMemantine Hcl72suppressed
OzempicSemaglutide7212
Triamcinolone AcetonideTriamcinolone Acetonide7138
LevetiracetamLevetiracetam70suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl6918
Olmesartan MedoxomilOlmesartan Medoxomil6316
Pioglitazone HclPioglitazone Hcl6215
Glipizide ErGlipizide61suppressed
Carbidopa-LevodopaCarbidopa/Levodopa60suppressed
Ondansetron HclOndansetron Hcl5920
AripiprazoleAripiprazole57suppressed
Pravastatin SodiumPravastatin Sodium5713
LamotrigineLamotrigine56suppressed
SimvastatinSimvastatin5614
Duloxetine HclDuloxetine Hcl5513
Venlafaxine HclVenlafaxine Hcl53suppressed
Sevelamer CarbonateSevelamer Carbonate52suppressed
BaclofenBaclofen51suppressed
Benztropine MesylateBenztropine Mesylate51suppressed
Calcium AcetateCalcium Acetate51suppressed
Fluoxetine HclFluoxetine Hcl5014
PregabalinPregabalin5015
Metformin Hcl ErMetformin Hcl4811
Diclofenac SodiumDiclofenac Sodium4718
Diltiazem 24hr Er (Cd)Diltiazem Hcl4412
Oxycodone HclOxycodone Hcl44suppressed
AllopurinolAllopurinol4311
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst4230
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip3825
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine3713
Promethazine HclPromethazine Hcl3719
Trelegy ElliptaFluticasone/Umeclidin/Vilanter37suppressed
DiazepamDiazepam36suppressed
Megestrol AcetateMegestrol Acetate36suppressed
EstradiolEstradiol35suppressed
EzetimibeEzetimibe3511
Lantus SolostarInsulin Glargine,hum.Rec.Anlog34suppressed
SpironolactoneSpironolactone34suppressed
Ropinirole HclRopinirole Hcl31suppressed
XareltoRivaroxaban31suppressed
LantusInsulin Glargine,hum.Rec.Anlog30suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide30suppressed
Ondansetron OdtOndansetron2911
CelecoxibCelecoxib28suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate2811
CefdinirCefdinir2719
Warfarin SodiumWarfarin Sodium27suppressed
Clonidine HclClonidine Hcl26suppressed
Ciprofloxacin HclCiprofloxacin Hcl2519
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride25suppressed
Morphine SulfateMorphine Sulfate2518
FluconazoleFluconazole2316
Paroxetine HclParoxetine Hcl23suppressed
EntrestoSacubitril/Valsartan21suppressed
MethylprednisoloneMethylprednisolone2117
Hydroxyzine HclHydroxyzine Hcl20suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide20suppressed
NystatinNystatin20suppressed
JardianceEmpagliflozin19suppressed
LidocaineLidocaine19suppressed
MethotrexateMethotrexate Sodium19suppressed
Spiriva HandihalerTiotropium Bromide19suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1915
Azelastine HclAzelastine Hcl1811
SucralfateSucralfate18suppressed
Diltiazem HclDiltiazem Hcl17suppressed
SymbicortBudesonide/Formoterol Fumarate17suppressed
GemfibrozilGemfibrozil16suppressed
LatanoprostLatanoprost16suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide16suppressed
SynthroidLevothyroxine Sodium16suppressed
Venlafaxine Hcl ErVenlafaxine Hcl16suppressed
MetronidazoleMetronidazole15suppressed
Albuterol SulfateAlbuterol Sulfate14suppressed
DutasterideDutasteride14suppressed
Insulin SyringeSyringe And Needle,insulin,1ml14suppressed
LansoprazoleLansoprazole14suppressed
Meclizine HclMeclizine Hcl14suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl14suppressed
TorsemideTorsemide14suppressed
Benazepril HclBenazepril Hcl13suppressed
ClonidineClonidine13suppressed
Dicyclomine HclDicyclomine Hcl13suppressed
Doxazosin MesylateDoxazosin Mesylate13suppressed
Doxycycline HyclateDoxycycline Hyclate1312
Fluticasone-SalmeterolFluticasone Propion/Salmeterol13suppressed
Lidocaine Hcl ViscousLidocaine Hcl13suppressed
RybelsusSemaglutide13suppressed
Testosterone CypionateTestosterone Cypionate13suppressed
Ventolin HfaAlbuterol Sulfate13suppressed
BuprenorphineBuprenorphine12suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate12suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate12suppressed
JanuviaSitagliptin Phosphate12suppressed
LoperamideLoperamide Hcl12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
Prasugrel HclPrasugrel Hcl12suppressed
RisperidoneRisperidone12suppressed
Tolterodine Tartrate ErTolterodine Tartrate12suppressed
Butalbital-Aspirin-CaffeineButalbital/Aspirin/Caffeine11suppressed
Clorazepate DipotassiumClorazepate Dipotassium11suppressed
EdarbiAzilsartan Medoxomil11suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin11suppressed
LevemirInsulin Detemir11suppressed
NitroglycerinNitroglycerin11suppressed
Oxybutynin Chloride ErOxybutynin Chloride11suppressed
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen11suppressed
Vilazodone HclVilazodone Hcl11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $45.74 · 2 records Phathom Pharmaceuticals, Inc. TRELEGY ELLIPTA, VOQUEZNA 1
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error