Healthcare provider profile · identity verified

Serena Zephyr Brewer, D.O

Family Practice · BUTTE, MT · NPI 1487853404

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 Calcium25358
Levothyroxine SodiumLevothyroxine Sodium18438
GabapentinGabapentin15735
OmeprazoleOmeprazole15332
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen15229
Rosuvastatin CalciumRosuvastatin Calcium14629
Potassium ChloridePotassium Chloride13329
FamotidineFamotidine12825
Losartan PotassiumLosartan Potassium11528
Bupropion XlBupropion Hcl10920
Duloxetine HclDuloxetine Hcl10715
LisinoprilLisinopril9827
Metformin HclMetformin Hcl8821
Pantoprazole SodiumPantoprazole Sodium8820
Oxycodone HclOxycodone Hcl8711
Zolpidem TartrateZolpidem Tartrate8615
Metoprolol SuccinateMetoprolol Succinate8522
Amlodipine BesylateAmlodipine Besylate7523
Trazodone HclTrazodone Hcl7414
FurosemideFurosemide7119
CelecoxibCelecoxib6316
Cyclobenzaprine HclCyclobenzaprine Hcl6211
SpironolactoneSpironolactone6117
MeloxicamMeloxicam6013
Oxybutynin Chloride ErOxybutynin Chloride60suppressed
Citalopram HbrCitalopram Hydrobromide5914
TemazepamTemazepam59suppressed
EliquisApixaban5414
Venlafaxine Hcl ErVenlafaxine Hcl5412
Fluoxetine HclFluoxetine Hcl5313
Albuterol Sulfate HfaAlbuterol Sulfate5220
Fluticasone PropionateFluticasone Propionate5216
PregabalinPregabalin52suppressed
Tamsulosin HclTamsulosin Hcl5111
BaclofenBaclofen4813
Stiolto RespimatTiotropium Br/Olodaterol Hcl46suppressed
SimvastatinSimvastatin4311
TorsemideTorsemide4311
TrulicityDulaglutide43suppressed
Sertraline HclSertraline Hcl4212
PrednisonePrednisone4120
Escitalopram OxalateEscitalopram Oxalate38suppressed
Tramadol HclTramadol Hcl38suppressed
ClonazepamClonazepam36suppressed
Breo ElliptaFluticasone/Vilanterol35suppressed
JardianceEmpagliflozin3511
Ventolin HfaAlbuterol Sulfate3516
Metformin Hcl ErMetformin Hcl34suppressed
Tizanidine HclTizanidine Hcl34suppressed
HydrochlorothiazideHydrochlorothiazide29suppressed
LamotrigineLamotrigine29suppressed
AzithromycinAzithromycin28suppressed
Ibandronate SodiumIbandronate Sodium28suppressed
Ropinirole HclRopinirole Hcl28suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen27suppressed
Clonidine HclClonidine Hcl26suppressed
OxcarbazepineOxcarbazepine26suppressed
Verapamil ErVerapamil Hcl26suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2513
CalcitriolCalcitriol25suppressed
SucralfateSucralfate25suppressed
LevetiracetamLevetiracetam24suppressed
NaproxenNaproxen24suppressed
Spiriva HandihalerTiotropium Bromide24suppressed
Hydroxyzine HclHydroxyzine Hcl23suppressed
FinasterideFinasteride21suppressed
IbuprofenIbuprofen21suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl19suppressed
Incruse ElliptaUmeclidinium Bromide19suppressed
Alendronate SodiumAlendronate Sodium18suppressed
AllopurinolAllopurinol18suppressed
CarvedilolCarvedilol18suppressed
ChlorthalidoneChlorthalidone18suppressed
Metoprolol TartrateMetoprolol Tartrate18suppressed
NystatinNystatin18suppressed
Bevespi AerosphereGlycopyrrolate/Formoterol Fum17suppressed
CarbamazepineCarbamazepine17suppressed
FenofibrateFenofibrate Nanocrystallized17suppressed
ClopidogrelClopidogrel Bisulfate16suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
Montelukast SodiumMontelukast Sodium16suppressed
NitrofurantoinNitrofurantoin Macrocrystal16suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl16suppressed
TopiramateTopiramate16suppressed
Varenicline TartrateVarenicline Tartrate16suppressed
AlprazolamAlprazolam15suppressed
Arnuity ElliptaFluticasone Furoate15suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog15suppressed
BelbucaBuprenorphine Hcl15suppressed
Methadone HclMethadone Hcl15suppressed
Quetiapine FumarateQuetiapine Fumarate15suppressed
AcyclovirAcyclovir14suppressed
EstradiolEstradiol14suppressed
FluconazoleFluconazole14suppressed
MethocarbamolMethocarbamol14suppressed
AripiprazoleAripiprazole13suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate13suppressed
BumetanideBumetanide13suppressed
CholestyramineCholestyramine (With Sugar)13suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride13suppressed
OzempicSemaglutide13suppressed
Propranolol HclPropranolol Hcl13suppressed
Amitriptyline HclAmitriptyline Hcl12suppressed
DiazepamDiazepam12suppressed
Diclofenac SodiumDiclofenac Sodium12suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium12suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol12suppressed
MirtazapineMirtazapine12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
EzetimibeEzetimibe11suppressed
Morphine SulfateMorphine Sulfate11suppressed
Pioglitazone HclPioglitazone 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