Healthcare provider profile · identity verified

Timothy P Gerst, M.D.

Family Practice · MANCHESTER, IA · NPI 1861480139

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 Calcium522132
Levothyroxine SodiumLevothyroxine Sodium32762
LisinoprilLisinopril27563
OmeprazoleOmeprazole25067
Amlodipine BesylateAmlodipine Besylate23969
Pantoprazole SodiumPantoprazole Sodium23956
Losartan PotassiumLosartan Potassium22657
Metoprolol SuccinateMetoprolol Succinate17444
Tamsulosin HclTamsulosin Hcl16638
FurosemideFurosemide14741
Rosuvastatin CalciumRosuvastatin Calcium14439
GabapentinGabapentin14245
Metformin HclMetformin Hcl13539
Tramadol HclTramadol Hcl10824
EliquisApixaban10424
FinasterideFinasteride10325
HydrochlorothiazideHydrochlorothiazide10230
Potassium ChloridePotassium Chloride9821
TrulicityDulaglutide97suppressed
Escitalopram OxalateEscitalopram Oxalate8722
FamotidineFamotidine8715
Alendronate SodiumAlendronate Sodium8427
SimvastatinSimvastatin7822
Sertraline HclSertraline Hcl7419
JardianceEmpagliflozin7211
Trazodone HclTrazodone Hcl7113
AllopurinolAllopurinol6415
MirtazapineMirtazapine61suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog5712
Donepezil HclDonepezil Hcl5612
GlipizideGlipizide5613
Memantine HclMemantine Hcl56suppressed
ClopidogrelClopidogrel Bisulfate5514
OzempicSemaglutide55suppressed
Albuterol Sulfate HfaAlbuterol Sulfate5415
AtenololAtenolol5315
Fluticasone PropionateFluticasone Propionate5111
CephalexinCephalexin4741
Diltiazem 24hr Er (Cd)Diltiazem Hcl47suppressed
Metformin Hcl ErMetformin Hcl47suppressed
MeloxicamMeloxicam44suppressed
Warfarin SodiumWarfarin Sodium42suppressed
Humalog Kwikpen U-100Insulin Lispro40suppressed
PrednisonePrednisone3828
ClozapineClozapine37suppressed
Metoprolol TartrateMetoprolol Tartrate37suppressed
Doxycycline HyclateDoxycycline Hyclate3632
MounjaroTirzepatide35suppressed
MyrbetriqMirabegron35suppressed
AlprazolamAlprazolam34suppressed
CarvedilolCarvedilol33suppressed
Citalopram HbrCitalopram Hydrobromide33suppressed
LorazepamLorazepam3314
Venlafaxine Hcl ErVenlafaxine Hcl33suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3227
XareltoRivaroxaban32suppressed
Acetic AcidAcetic Acid30suppressed
BumetanideBumetanide30suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3012
Trelegy ElliptaFluticasone/Umeclidin/Vilanter30suppressed
LatanoprostLatanoprost29suppressed
ClonazepamClonazepam28suppressed
Duloxetine HclDuloxetine Hcl27suppressed
Fluoxetine HclFluoxetine Hcl27suppressed
SpironolactoneSpironolactone2711
Brimonidine TartrateBrimonidine Tartrate26suppressed
LovastatinLovastatin26suppressed
CefdinirCefdinir2524
NuplazidPimavanserin Tartrate25suppressed
Quetiapine FumarateQuetiapine Fumarate25suppressed
Amitriptyline HclAmitriptyline Hcl23suppressed
Pravastatin SodiumPravastatin Sodium23suppressed
Venlafaxine HclVenlafaxine Hcl23suppressed
Bupropion XlBupropion Hcl22suppressed
Fludrocortisone AcetateFludrocortisone Acetate22suppressed
OlanzapineOlanzapine22suppressed
Ropinirole HclRopinirole Hcl22suppressed
Montelukast SodiumMontelukast Sodium21suppressed
Testosterone CypionateTestosterone Cypionate21suppressed
ValsartanValsartan21suppressed
Carbidopa-LevodopaCarbidopa/Levodopa20suppressed
HydrocortisoneHydrocortisone20suppressed
LantusInsulin Glargine,hum.Rec.Anlog20suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl20suppressed
Solifenacin SuccinateSolifenacin Succinate20suppressed
BuprenorphineBuprenorphine19suppressed
DigoxinDigoxin19suppressed
ChlorthalidoneChlorthalidone18suppressed
Enalapril MaleateEnalapril Maleate18suppressed
EzetimibeEzetimibe18suppressed
SucralfateSucralfate18suppressed
ValacyclovirValacyclovir Hcl18suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1715
Isosorbide Mononitrate ErIsosorbide Mononitrate17suppressed
Ventolin HfaAlbuterol Sulfate17suppressed
Zolpidem TartrateZolpidem Tartrate17suppressed
Buspirone HclBuspirone Hcl16suppressed
Clobetasol PropionateClobetasol Propionate16suppressed
Fluticasone Propionate HfaFluticasone Propionate16suppressed
Incruse ElliptaUmeclidinium Bromide16suppressed
Clonidine HclClonidine Hcl15suppressed
Dicyclomine HclDicyclomine Hcl15suppressed
JanuviaSitagliptin Phosphate15suppressed
Oxybutynin Chloride ErOxybutynin Chloride15suppressed
Atropine SulfateAtropine Sulfate14suppressed
FenofibrateFenofibrate Nanocrystallized14suppressed
NystatinNystatin14suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen14suppressed
PregabalinPregabalin14suppressed
SynthroidLevothyroxine Sodium14suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc13suppressed
GlimepirideGlimepiride13suppressed
IrbesartanIrbesartan13suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog13suppressed
Amiodarone HclAmiodarone Hcl12suppressed
Bisoprolol-HydrochlorothiazideBisoprolol/Hydrochlorothiazide12suppressed
Ciprofloxacin HclCiprofloxacin Hcl1211
Glipizide ErGlipizide12suppressed
NystopNystatin12suppressed
Ondansetron OdtOndansetron12suppressed
Potassium Citrate ErPotassium Citrate12suppressed
PrevaliteCholestyramine12suppressed
Propranolol HclPropranolol Hcl12suppressed
SulindacSulindac12suppressed
Tramadol Hcl ErTramadol Hcl12suppressed
Tresiba Flextouch U-100Insulin Degludec12suppressed
Albuterol SulfateAlbuterol Sulfate11suppressed
AmoxicillinAmoxicillin11suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone11suppressed
NovologInsulin Aspart11suppressed
Paroxetine HclParoxetine Hcl11suppressed
PrimidonePrimidone11suppressed
Propranolol Hcl ErPropranolol Hcl11suppressed
RivastigmineRivastigmine11suppressed
Xtampza ErOxycodone Myristate11suppressed

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