Healthcare provider profile · identity verified

William George Grubb, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · BRUNSWICK, GA · NPI 1093721532

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 William George Grubb, MD received $1,768.75 in general payments during 2025 across 59 reported records.

Ardelyx, Inc. accounted for 19.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 21 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Jardiance, Kerendia, Krystexxa.

Amgen Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported KRYSTEXXA as an associated drug or biological on 45998 records involving 14548 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Krystexxa by this doctor in 2024.

Amgen Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PROLIA as an associated drug or biological on 20867 records involving 11744 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Prolia by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 328 claims for Farxiga by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYMBICORT as an associated drug or biological on 71 records involving 51 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Symbicort by this doctor in 2024.

Bayer Healthcare Pharmaceuticals Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Kerendia by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 188 claims for Jardiance by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,768.75

59 reported records · 14 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
Ardelyx, Inc. Unresolved — no canonical attribution shown $344.3219.5%52025
Travere Therapeutics, Inc. Unresolved — no canonical attribution shown $326.4018.4%82025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $239.6113.6%82025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $192.5610.9%92025
Amgen Inc. Unresolved — no canonical attribution shown $155.238.8%82025
Mallinckrodt Hospital Products Inc. Unresolved — no canonical attribution shown $137.847.8%42025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $92.405.2%52025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $73.064.1%32025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $53.553.0%32025
Calliditas Therapeutics US Inc. Unresolved — no canonical attribution shown $43.242.4%22025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $33.351.9%12025
Apellis Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $31.891.8%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $25.221.4%12025
Ascendis Pharma Endocrinology Inc Unresolved — no canonical attribution shown $20.081.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,687.9354
Education$80.825

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
Filspari
Normalized: filspari
Drug Travere Therapeutics, Inc. $292.15 6 2025
Source payment records
XPHOZAH 30 MG
Normalized: xphozah 30 mg
Drug Ardelyx, Inc. $246.05 2 2025
Source payment records
Fabhalta
Normalized: fabhalta
Drug Novartis Pharmaceuticals Corporation $188.39 6 2025
Source payment records
JYNARQUE
Normalized: jynarque
Drug Otsuka America Pharmaceutical, Inc. $167.45 8 2025
Source payment records
Vanrafia
Normalized: vanrafia
Drug Novartis Pharmaceuticals Corporation $141.65 6 2025
Source payment records
ACTHAR
Normalized: acthar
Biological Mallinckrodt Hospital Products Inc. $137.84 4 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $98.27 3 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $92.40 5 2025
Source payment records
KRYSTEXXA
Normalized: krystexxa
Biological Amgen Inc. $78.35 4 2025
Source payment records
KEVEYIS
Normalized: keveyis
Drug Xeris Pharmaceuticals, Inc. $73.06 3 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $53.55 3 2025
Source payment records
TAVNEOS
Normalized: tavneos
Drug Amgen Inc. $47.01 2 2025
Source payment records
TARPEYO
Normalized: tarpeyo
Drug Calliditas Therapeutics US Inc. $43.24 2 2025
Source payment records
GATTEX
Normalized: gattex
Drug Takeda Pharmaceuticals U.S.A., Inc. $33.35 1 2025
Source payment records
Empaveli
Normalized: empaveli
Drug Apellis Pharmaceuticals, Inc. $31.89 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $25.22 1 2025
Source payment records
VOYXACT
Normalized: voyxact
Drug Otsuka America Pharmaceutical, Inc. $25.11 1 2025
Source payment records
TAFINLAR
Normalized: tafinlar
Drug Novartis Pharmaceuticals Corporation $23.03 1 2025
Source payment records
Yorvipath
Normalized: yorvipath
Drug Ascendis Pharma Endocrinology Inc $20.08 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $15.05 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $14.82 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
FARXIGA
farxiga
2025 Farxiga 2024 328 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 188 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 24
Beneficiary count suppressed
exact normalized Medicare Part D
KRYSTEXXA
krystexxa
2025 Krystexxa 2024 12
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
Amgen Inc.
Exact reporting entity; no affiliate inference
2025 KRYSTEXXA
open payments reported associated product
CMS Open Payments — General Payments
45998 supporting records · 14548 recipient NPIs · example record 1226871690
Krystexxa · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
Amgen Inc.
Exact reporting entity; no affiliate inference
2025 PROLIA
open payments reported associated product
CMS Open Payments — General Payments
20867 supporting records · 11744 recipient NPIs · example record 1226874448
Prolia · 2024
Exact normalized brand match · 1 Part D row
20 14
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
328 70
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 SYMBICORT
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 51 recipient NPIs · example record 1206132610
Symbicort · 2024
Exact normalized brand match · 1 Part D row
20 suppressed by CMS
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
188 39

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 Calcium659185
Levothyroxine SodiumLevothyroxine Sodium554112
Losartan PotassiumLosartan Potassium517153
Amlodipine BesylateAmlodipine Besylate469129
FarxigaDapagliflozin Propanediol32870
AllopurinolAllopurinol25369
Pantoprazole SodiumPantoprazole Sodium22544
EzetimibeEzetimibe22254
Metformin HclMetformin Hcl20555
Rosuvastatin CalciumRosuvastatin Calcium20353
SpironolactoneSpironolactone20255
JardianceEmpagliflozin18839
OmeprazoleOmeprazole17545
Potassium ChloridePotassium Chloride16537
OzempicSemaglutide16423
Trazodone HclTrazodone Hcl16334
Metoprolol SuccinateMetoprolol Succinate15232
GabapentinGabapentin14738
FurosemideFurosemide14641
CarvedilolCarvedilol14335
EliquisApixaban14327
Tramadol HclTramadol Hcl14231
Tamsulosin HclTamsulosin Hcl13233
LisinoprilLisinopril11230
Escitalopram OxalateEscitalopram Oxalate10521
SimvastatinSimvastatin10325
PrednisonePrednisone9632
TorsemideTorsemide9330
ChlorthalidoneChlorthalidone8927
Benazepril HclBenazepril Hcl8720
Montelukast SodiumMontelukast Sodium8718
Diltiazem 24hr Er (Cd)Diltiazem Hcl8223
ClopidogrelClopidogrel Bisulfate8124
Albuterol Sulfate HfaAlbuterol Sulfate8031
Metoprolol TartrateMetoprolol Tartrate7421
HydrochlorothiazideHydrochlorothiazide7222
Doxazosin MesylateDoxazosin Mesylate7020
Lantus SolostarInsulin Glargine,hum.Rec.Anlog7018
TemazepamTemazepam6914
LorazepamLorazepam6415
Duloxetine HclDuloxetine Hcl63suppressed
Ciprofloxacin HclCiprofloxacin Hcl6245
Pramipexole DihydrochloridePramipexole Di-Hcl6011
LactuloseLactulose5918
FamotidineFamotidine5819
Fluoxetine HclFluoxetine Hcl5717
Hydralazine HclHydralazine Hcl5619
Clonidine HclClonidine Hcl5519
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5513
Alendronate SodiumAlendronate Sodium5413
AzithromycinAzithromycin5241
MirtazapineMirtazapine51suppressed
Zolpidem TartrateZolpidem Tartrate51suppressed
Warfarin SodiumWarfarin Sodium49suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim4620
Donepezil HclDonepezil Hcl43suppressed
Venlafaxine Hcl ErVenlafaxine Hcl43suppressed
Pioglitazone HclPioglitazone Hcl4212
SynthroidLevothyroxine Sodium42suppressed
JanuviaSitagliptin Phosphate41suppressed
Pravastatin SodiumPravastatin Sodium4114
PregabalinPregabalin41suppressed
VascepaIcosapent Ethyl41suppressed
Desmopressin AcetateDesmopressin Acetate39suppressed
Fluticasone PropionateFluticasone Propionate3911
MounjaroTirzepatide38suppressed
ValsartanValsartan3811
Bupropion XlBupropion Hcl3712
Nifedipine ErNifedipine37suppressed
Ropinirole HclRopinirole Hcl37suppressed
Sertraline HclSertraline Hcl37suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium36suppressed
ValacyclovirValacyclovir Hcl36suppressed
Calcium AcetateCalcium Acetate34suppressed
EszopicloneEszopiclone34suppressed
FinasterideFinasteride34suppressed
Propranolol HclPropranolol Hcl3414
Metformin Hcl ErMetformin Hcl33suppressed
Breo ElliptaFluticasone/Vilanterol31suppressed
CephalexinCephalexin3122
Diclofenac SodiumDiclofenac Sodium30suppressed
IrbesartanIrbesartan30suppressed
CalcitriolCalcitriol29suppressed
ClonazepamClonazepam29suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate28suppressed
XareltoRivaroxaban28suppressed
EplerenoneEplerenone27suppressed
LantusInsulin Glargine,hum.Rec.Anlog27suppressed
Repatha SureclickEvolocumab27suppressed
Citalopram HbrCitalopram Hydrobromide25suppressed
CreonLipase/Protease/Amylase25suppressed
Dilt-XrDiltiazem Hcl25suppressed
GlimepirideGlimepiride25suppressed
Memantine HclMemantine Hcl25suppressed
Novolog FlexpenInsulin Aspart25suppressed
Cinacalcet HclCinacalcet Hcl24suppressed
KerendiaFinerenone24suppressed
MyrbetriqMirabegron24suppressed
FluconazoleFluconazole2314
Verapamil ErVerapamil Hcl23suppressed
Combivent RespimatIpratropium/Albuterol Sulfate22suppressed
FenofibrateFenofibrate Nanocrystallized22suppressed
GlipizideGlipizide22suppressed
Sevelamer CarbonateSevelamer Carbonate2211
Tresiba Flextouch U-100Insulin Degludec22suppressed
LovastatinLovastatin21suppressed
MeloxicamMeloxicam21suppressed
PrimidonePrimidone21suppressed
Dexlansoprazole DrDexlansoprazole20suppressed
FenofibrateFenofibrate20suppressed
Fludrocortisone AcetateFludrocortisone Acetate20suppressed
ProliaDenosumab2014
SymbicortBudesonide/Formoterol Fumarate20suppressed
TradjentaLinagliptin20suppressed
Amitriptyline HclAmitriptyline Hcl19suppressed
CefdinirCefdinir1914
LevetiracetamLevetiracetam19suppressed
Bupropion Hcl SrBupropion Hcl18suppressed
Buspirone HclBuspirone Hcl18suppressed
FebuxostatFebuxostat18suppressed
HumalogInsulin Lispro18suppressed
NitroglycerinNitroglycerin1812
Tizanidine HclTizanidine Hcl18suppressed
AmoxicillinAmoxicillin17suppressed
Bisoprolol FumarateBisoprolol Fumarate17suppressed
Carbidopa-LevodopaCarbidopa/Levodopa17suppressed
CholestyramineCholestyramine (With Sugar)17suppressed
Labetalol HclLabetalol Hcl17suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic17suppressed
Testosterone CypionateTestosterone Cypionate17suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1612
Cholestyramine LightCholestyramine16suppressed
Ipratropium BromideIpratropium Bromide16suppressed
Methylphenidate HclMethylphenidate Hcl16suppressed
AcyclovirAcyclovir15suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril15suppressed
Icosapent EthylIcosapent Ethyl15suppressed
Ondansetron OdtOndansetron15suppressed
Pitavastatin CalciumPitavastatin Calcium15suppressed
Sumatriptan SuccinateSumatriptan Succinate15suppressed
Verapamil SrVerapamil Hcl15suppressed
DigoxinDigoxin14suppressed
EdarbiAzilsartan Medoxomil14suppressed
Olmesartan MedoxomilOlmesartan Medoxomil14suppressed
Paroxetine HclParoxetine Hcl14suppressed
Vitamin D2Ergocalciferol (Vitamin D2)14suppressed
Megestrol AcetateMegestrol Acetate13suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters13suppressed
Potassium Citrate ErPotassium Citrate13suppressed
Propranolol Hcl ErPropranolol Hcl13suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid13suppressed
Clorazepate DipotassiumClorazepate Dipotassium12suppressed
KrystexxaPegloticase12suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride12suppressed
Meclizine HclMeclizine Hcl12suppressed
MultaqDronedarone Hcl12suppressed
NystatinNystatin12suppressed
Quetiapine FumarateQuetiapine Fumarate12suppressed
AlprazolamAlprazolam11suppressed
Azelastine HclAzelastine Hcl11suppressed
DexamethasoneDexamethasone11suppressed
LivaloPitavastatin Calcium11suppressed
Methylprednisolone Sodium SuccMethylprednisolone Sod Succ11suppressed
MinoxidilMinoxidil11suppressed
Ondansetron HclOndansetron Hcl11suppressed
TopiramateTopiramate11suppressed

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 $1,768.75 · 59 records Ardelyx, Inc. ACTHAR, EVENITY, Empaveli, FARXIGA, Fabhalta, Filspari, GATTEX, IBSRELA, JARDIANCE, JYNARQUE, KEVEYIS, KRYSTEXXA, Kerendia, REPATHA, TAFINLAR, TARPEYO, TAVNEOS, VOYXACT, Vanrafia, XPHOZAH 30 MG, Yorvipath 6
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