Healthcare provider profile · identity verified

Daniel H Kallmerten, MD

Internal Medicine · LACONIA, NH · NPI 1710958467

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 Calcium522152
Amlodipine BesylateAmlodipine Besylate488132
Losartan PotassiumLosartan Potassium348105
Levothyroxine SodiumLevothyroxine Sodium22472
LisinoprilLisinopril22263
Pantoprazole SodiumPantoprazole Sodium19259
OmeprazoleOmeprazole18653
SimvastatinSimvastatin18354
GabapentinGabapentin17360
Rosuvastatin CalciumRosuvastatin Calcium17152
Pravastatin SodiumPravastatin Sodium16650
Metoprolol SuccinateMetoprolol Succinate15744
Metformin HclMetformin Hcl15347
HydrochlorothiazideHydrochlorothiazide14548
AllopurinolAllopurinol14438
Tamsulosin HclTamsulosin Hcl14238
Trazodone HclTrazodone Hcl12532
FamotidineFamotidine10428
Potassium ChloridePotassium Chloride10432
Metformin Hcl ErMetformin Hcl8625
EliquisApixaban8524
Citalopram HbrCitalopram Hydrobromide8121
Escitalopram OxalateEscitalopram Oxalate8026
FurosemideFurosemide8026
Glipizide ErGlipizide7620
CarvedilolCarvedilol7020
Fluticasone PropionateFluticasone Propionate7026
Metoprolol TartrateMetoprolol Tartrate6721
Warfarin SodiumWarfarin Sodium6414
Enalapril MaleateEnalapril Maleate6218
Amiloride HclAmiloride Hcl6018
Donepezil HclDonepezil Hcl6012
AtenololAtenolol5916
ClopidogrelClopidogrel Bisulfate5920
OzempicSemaglutide5911
AlprazolamAlprazolam5824
Quetiapine FumarateQuetiapine Fumarate5712
Sertraline HclSertraline Hcl5716
FinasterideFinasteride5614
SpironolactoneSpironolactone5314
IrbesartanIrbesartan5213
Benazepril HclBenazepril Hcl5116
Diclofenac SodiumDiclofenac Sodium5116
TorsemideTorsemide5116
ChlorthalidoneChlorthalidone4915
Zolpidem TartrateZolpidem Tartrate4918
Duloxetine HclDuloxetine Hcl4815
JardianceEmpagliflozin4713
PrednisonePrednisone4730
ValsartanValsartan4613
Memantine HclMemantine Hcl45suppressed
SynthroidLevothyroxine Sodium4313
Alendronate SodiumAlendronate Sodium4114
Tramadol HclTramadol Hcl4015
LorazepamLorazepam3915
Albuterol Sulfate HfaAlbuterol Sulfate3713
Oxycodone HclOxycodone Hcl36suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog35suppressed
Paroxetine HclParoxetine Hcl32suppressed
MirtazapineMirtazapine31suppressed
Hydralazine HclHydralazine Hcl29suppressed
ClonazepamClonazepam28suppressed
EzetimibeEzetimibe28suppressed
Venlafaxine Hcl ErVenlafaxine Hcl27suppressed
CelecoxibCelecoxib25suppressed
FarxigaDapagliflozin Propanediol25suppressed
RybelsusSemaglutide25suppressed
Montelukast SodiumMontelukast Sodium24suppressed
Bupropion XlBupropion Hcl23suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl23suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide23suppressed
LoperamideLoperamide Hcl23suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide23suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid23suppressed
LovastatinLovastatin22suppressed
XareltoRivaroxaban22suppressed
Breo ElliptaFluticasone/Vilanterol21suppressed
JanuviaSitagliptin Phosphate21suppressed
TrulicityDulaglutide21suppressed
Clonidine HclClonidine Hcl20suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr19suppressed
GlipizideGlipizide18suppressed
Sumatriptan SuccinateSumatriptan Succinate18suppressed
Wixela InhubFluticasone Propion/Salmeterol18suppressed
Doxazosin MesylateDoxazosin Mesylate17suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium17suppressed
Oxybutynin Chloride ErOxybutynin Chloride17suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate16suppressed
Ropinirole HclRopinirole Hcl16suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1612
FenofibrateFenofibrate Nanocrystallized15suppressed
PregabalinPregabalin15suppressed
GlimepirideGlimepiride14suppressed
LevetiracetamLevetiracetam14suppressed
NaproxenNaproxen14suppressed
Clobetasol PropionateClobetasol Propionate13suppressed
IbuprofenIbuprofen13suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl12suppressed
HumalogInsulin Lispro12suppressed
Solifenacin SuccinateSolifenacin Succinate12suppressed
Candesartan CilexetilCandesartan Cilexetil11suppressed
DiazepamDiazepam11suppressed
EstradiolEstradiol11suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate11suppressed
LantusInsulin Glargine,hum.Rec.Anlog11suppressed
Mometasone FuroateMometasone Furoate11suppressed
Olmesartan MedoxomilOlmesartan Medoxomil11suppressed
Ultra-Fine Short 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