Healthcare provider profile · identity verified

Gabriel B Williams, M.D.

Family Practice · GRAND RAPIDS, MI · NPI 1801024872

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium30387
Amlodipine BesylateAmlodipine Besylate26583
GabapentinGabapentin22137
OmeprazoleOmeprazole15744
LisinoprilLisinopril11335
Albuterol Sulfate HfaAlbuterol Sulfate10641
Losartan PotassiumLosartan Potassium10537
Fluticasone PropionateFluticasone Propionate9725
TrulicityDulaglutide9520
Levothyroxine SodiumLevothyroxine Sodium9325
Cyclobenzaprine HclCyclobenzaprine Hcl8220
CarvedilolCarvedilol7820
Metformin HclMetformin Hcl7525
BaclofenBaclofen7418
PregabalinPregabalin7415
FurosemideFurosemide6217
ChlorthalidoneChlorthalidone6123
EliquisApixaban5712
Trazodone HclTrazodone Hcl5616
Rosuvastatin CalciumRosuvastatin Calcium5417
OzempicSemaglutide53suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5214
Metoprolol SuccinateMetoprolol Succinate5116
MeloxicamMeloxicam4714
Duloxetine HclDuloxetine Hcl4414
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4313
Pantoprazole SodiumPantoprazole Sodium4317
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide39suppressed
IbuprofenIbuprofen38suppressed
Montelukast SodiumMontelukast Sodium3813
Zolpidem TartrateZolpidem Tartrate36suppressed
Hydroxyzine HclHydroxyzine Hcl33suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol32suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic32suppressed
AllopurinolAllopurinol31suppressed
Metformin Hcl ErMetformin Hcl3111
NaproxenNaproxen3112
Tamsulosin HclTamsulosin Hcl31suppressed
FamotidineFamotidine29suppressed
SpironolactoneSpironolactone29suppressed
MethocarbamolMethocarbamol2811
SymbicortBudesonide/Formoterol Fumarate28suppressed
Amitriptyline HclAmitriptyline Hcl27suppressed
CelecoxibCelecoxib27suppressed
Venlafaxine Hcl ErVenlafaxine Hcl27suppressed
Citalopram HbrCitalopram Hydrobromide26suppressed
Novolog FlexpenInsulin Aspart26suppressed
Quetiapine FumarateQuetiapine Fumarate26suppressed
Buspirone HclBuspirone Hcl25suppressed
Potassium ChloridePotassium Chloride25suppressed
Tizanidine HclTizanidine Hcl25suppressed
Bupropion XlBupropion Hcl24suppressed
PrednisonePrednisone2421
Tramadol HclTramadol Hcl24suppressed
Benazepril HclBenazepril Hcl23suppressed
Dicyclomine HclDicyclomine Hcl23suppressed
HydrochlorothiazideHydrochlorothiazide23suppressed
JanuviaSitagliptin Phosphate23suppressed
MirtazapineMirtazapine23suppressed
TopiramateTopiramate2311
Trelegy ElliptaFluticasone/Umeclidin/Vilanter23suppressed
Ventolin HfaAlbuterol Sulfate23suppressed
LorazepamLorazepam22suppressed
Ondansetron OdtOndansetron21suppressed
Promethazine HclPromethazine Hcl21suppressed
Sertraline HclSertraline Hcl21suppressed
FluconazoleFluconazole20suppressed
Alendronate SodiumAlendronate Sodium19suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine19suppressed
Nifedipine ErNifedipine19suppressed
ValacyclovirValacyclovir Hcl19suppressed
Candesartan CilexetilCandesartan Cilexetil17suppressed
Diclofenac SodiumDiclofenac Sodium17suppressed
Sumatriptan SuccinateSumatriptan Succinate17suppressed
Varenicline TartrateVarenicline Tartrate17suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr16suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone16suppressed
JardianceEmpagliflozin16suppressed
Novolin 70-30 FlexpenInsulin Nph Hum/Reg Insulin Hm16suppressed
Ondansetron HclOndansetron Hcl16suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1612
Escitalopram OxalateEscitalopram Oxalate14suppressed
LantusInsulin Glargine,hum.Rec.Anlog14suppressed
TorsemideTorsemide14suppressed
Arnuity ElliptaFluticasone Furoate13suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog13suppressed
DuleraMometasone/Formoterol13suppressed
EntrestoSacubitril/Valsartan13suppressed
IbuIbuprofen13suppressed
LamotrigineLamotrigine13suppressed
Metoprolol TartrateMetoprolol Tartrate13suppressed
ClopidogrelClopidogrel Bisulfate12suppressed
FarxigaDapagliflozin Propanediol12suppressed
Spiriva HandihalerTiotropium Bromide12suppressed
Ziprasidone HclZiprasidone Hcl12suppressed
BumetanideBumetanide11suppressed
GlimepirideGlimepiride11suppressed
HaloperidolHaloperidol11suppressed
Meclizine HclMeclizine Hcl11suppressed
Novolin 70-30Insulin Nph Hum/Reg Insulin Hm11suppressed
VraylarCariprazine 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
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