Healthcare provider profile · identity verified

William Leonard Phillips, M.D.

Family Practice · BILLINGS, MT · NPI 1831190685

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 Calcium412122
Amlodipine BesylateAmlodipine Besylate345100
GabapentinGabapentin28475
Levothyroxine SodiumLevothyroxine Sodium28189
Losartan PotassiumLosartan Potassium27377
LisinoprilLisinopril23570
Rosuvastatin CalciumRosuvastatin Calcium21562
SimvastatinSimvastatin21558
Metformin Hcl ErMetformin Hcl21268
Tamsulosin HclTamsulosin Hcl21066
Potassium ChloridePotassium Chloride20272
Metoprolol SuccinateMetoprolol Succinate19652
OmeprazoleOmeprazole19157
OzempicSemaglutide17432
EliquisApixaban16830
Escitalopram OxalateEscitalopram Oxalate15241
Sertraline HclSertraline Hcl13335
Tramadol HclTramadol Hcl12741
Pantoprazole SodiumPantoprazole Sodium11831
Trazodone HclTrazodone Hcl11535
FurosemideFurosemide10835
JardianceEmpagliflozin9826
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen9634
AllopurinolAllopurinol9530
ClonazepamClonazepam9117
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide8728
SpironolactoneSpironolactone8725
HydrochlorothiazideHydrochlorothiazide8626
Bupropion XlBupropion Hcl8426
Olmesartan MedoxomilOlmesartan Medoxomil7820
PrednisonePrednisone7534
Metformin HclMetformin Hcl7421
Duloxetine HclDuloxetine Hcl7323
Memantine HclMemantine Hcl6811
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide6621
Montelukast SodiumMontelukast Sodium6623
Albuterol Sulfate HfaAlbuterol Sulfate6520
CarvedilolCarvedilol6420
FinasterideFinasteride6320
Pravastatin SodiumPravastatin Sodium6317
MirtazapineMirtazapine6217
PregabalinPregabalin6215
Metoprolol TartrateMetoprolol Tartrate5920
AlprazolamAlprazolam5714
Oxycodone HclOxycodone Hcl5411
LorazepamLorazepam5212
Fluoxetine HclFluoxetine Hcl5016
TorsemideTorsemide4715
CephalexinCephalexin4620
Fluticasone PropionateFluticasone Propionate4318
Alendronate SodiumAlendronate Sodium4214
MounjaroTirzepatide42suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid4112
Warfarin SodiumWarfarin Sodium3714
FamotidineFamotidine3611
SymbicortBudesonide/Formoterol Fumarate36suppressed
TrulicityDulaglutide36suppressed
ClopidogrelClopidogrel Bisulfate3512
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine35suppressed
Quetiapine FumarateQuetiapine Fumarate3511
Lantus SolostarInsulin Glargine,hum.Rec.Anlog33suppressed
ValacyclovirValacyclovir Hcl3311
XareltoRivaroxaban32suppressed
EstradiolEstradiol31suppressed
Hydromorphone HclHydromorphone Hcl31suppressed
Citalopram HbrCitalopram Hydrobromide30suppressed
Ipratropium BromideIpratropium Bromide3013
Sumatriptan SuccinateSumatriptan Succinate30suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol29suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen29suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2816
Doxazosin MesylateDoxazosin Mesylate27suppressed
AtenololAtenolol26suppressed
Buspirone HclBuspirone Hcl26suppressed
CelecoxibCelecoxib2612
Zolpidem TartrateZolpidem Tartrate26suppressed
EzetimibeEzetimibe24suppressed
LinzessLinaclotide24suppressed
MethocarbamolMethocarbamol24suppressed
PrimidonePrimidone24suppressed
Ropinirole HclRopinirole Hcl24suppressed
TemazepamTemazepam24suppressed
ValsartanValsartan24suppressed
AmoxicillinAmoxicillin2318
FluconazoleFluconazole2314
SynthroidLevothyroxine Sodium23suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl22suppressed
Hydroxyzine PamoateHydroxyzine Pamoate22suppressed
Morphine Sulfate ErMorphine Sulfate22suppressed
Testosterone CypionateTestosterone Cypionate22suppressed
Bupropion Hcl SrBupropion Hcl21suppressed
LamotrigineLamotrigine21suppressed
Benazepril-HydrochlorothiazideBenazepril/Hydrochlorothiazide20suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl20suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2019
Propranolol Hcl ErPropranolol Hcl20suppressed
RisperidoneRisperidone20suppressed
Amitriptyline HclAmitriptyline Hcl19suppressed
FentanylFentanyl19suppressed
RestasisCyclosporine19suppressed
Clonidine HclClonidine Hcl18suppressed
MeloxicamMeloxicam18suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic18suppressed
AripiprazoleAripiprazole17suppressed
AzithromycinAzithromycin17suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog17suppressed
Ondansetron OdtOndansetron17suppressed
Venlafaxine Hcl ErVenlafaxine Hcl16suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril14suppressed
EntrestoSacubitril/Valsartan14suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate14suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl14suppressed
Propranolol HclPropranolol Hcl14suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter14suppressed
Diltiazem 24hr ErDiltiazem Hcl13suppressed
FenofibrateFenofibrate Nanocrystallized13suppressed
LidocaineLidocaine13suppressed
Oxybutynin ChlorideOxybutynin Chloride13suppressed
Spiriva HandihalerTiotropium Bromide13suppressed
Tresiba Flextouch U-100Insulin Degludec13suppressed
Verapamil ErVerapamil Hcl13suppressed
DutasterideDutasteride12suppressed
EszopicloneEszopiclone12suppressed
FarxigaDapagliflozin Propanediol12suppressed
LevetiracetamLevetiracetam12suppressed
MyrbetriqMirabegron12suppressed
Nortriptyline HclNortriptyline Hcl12suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide12suppressed
OxycontinOxycodone Hcl12suppressed
RybelsusSemaglutide12suppressed
Breo ElliptaFluticasone/Vilanterol11suppressed
BuprenorphineBuprenorphine11suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine11suppressed
KetoconazoleKetoconazole11suppressed
NitroglycerinNitroglycerin11suppressed
Paroxetine HclParoxetine Hcl11suppressed
Pioglitazone HclPioglitazone Hcl11suppressed
Tizanidine HclTizanidine Hcl11suppressed
TopiramateTopiramate11suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic11suppressed

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