Healthcare provider profile · identity verified

Douglas J. Buchanan, M.D.

General Practice · KERRVILLE, TX · NPI 1043277486

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 Calcium348100
Levothyroxine SodiumLevothyroxine Sodium25762
Amlodipine BesylateAmlodipine Besylate22462
LisinoprilLisinopril17551
HydrochlorothiazideHydrochlorothiazide17450
Rosuvastatin CalciumRosuvastatin Calcium15848
Losartan PotassiumLosartan Potassium14142
MeloxicamMeloxicam13837
Pantoprazole SodiumPantoprazole Sodium13539
GabapentinGabapentin13035
Metoprolol SuccinateMetoprolol Succinate13037
Metformin HclMetformin Hcl11033
Metformin Hcl ErMetformin Hcl10030
Citalopram HbrCitalopram Hydrobromide9520
Alendronate SodiumAlendronate Sodium8223
Potassium ChloridePotassium Chloride6814
SimvastatinSimvastatin6820
AllopurinolAllopurinol6716
Metoprolol TartrateMetoprolol Tartrate6418
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5915
OmeprazoleOmeprazole5516
Trazodone HclTrazodone Hcl5314
Hydroxyzine HclHydroxyzine Hcl5212
FurosemideFurosemide5116
Pioglitazone HclPioglitazone Hcl5113
Sertraline HclSertraline Hcl4814
Tamsulosin HclTamsulosin Hcl4817
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4712
ClopidogrelClopidogrel Bisulfate4411
Pravastatin SodiumPravastatin Sodium4311
Montelukast SodiumMontelukast Sodium4012
Pramipexole DihydrochloridePramipexole Di-Hcl39suppressed
LovastatinLovastatin35suppressed
Escitalopram OxalateEscitalopram Oxalate34suppressed
OzempicSemaglutide34suppressed
SynthroidLevothyroxine Sodium34suppressed
Albuterol Sulfate HfaAlbuterol Sulfate3221
Buspirone HclBuspirone Hcl3211
EzetimibeEzetimibe31suppressed
Meclizine HclMeclizine Hcl31suppressed
Duloxetine HclDuloxetine Hcl28suppressed
Oxybutynin Chloride ErOxybutynin Chloride28suppressed
ChlorthalidoneChlorthalidone27suppressed
FenofibrateFenofibrate27suppressed
Propranolol HclPropranolol Hcl27suppressed
EliquisApixaban25suppressed
CarvedilolCarvedilol24suppressed
Fluoxetine HclFluoxetine Hcl23suppressed
Zolpidem TartrateZolpidem Tartrate23suppressed
AcyclovirAcyclovir22suppressed
Fluticasone PropionateFluticasone Propionate22suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf2116
GlipizideGlipizide20suppressed
Triamcinolone AcetonideTriamcinolone Acetonide20suppressed
Bupropion XlBupropion Hcl19suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium19suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril18suppressed
FamotidineFamotidine18suppressed
FinasterideFinasteride18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
AlprazolamAlprazolam17suppressed
EstradiolEstradiol17suppressed
PrednisonePrednisone1717
TorsemideTorsemide16suppressed
Clonidine HclClonidine Hcl15suppressed
EtodolacEtodolac1514
IrbesartanIrbesartan15suppressed
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1414
GlimepirideGlimepiride14suppressed
MupirocinMupirocin14suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1414
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim14suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl13suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol13suppressed
OxcarbazepineOxcarbazepine13suppressed
Sumatriptan SuccinateSumatriptan Succinate13suppressed
Terazosin HclTerazosin Hcl13suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter13suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid13suppressed
Armour ThyroidThyroid,pork12suppressed
AzithromycinAzithromycin1211
CephalexinCephalexin1211
Donepezil HclDonepezil Hcl12suppressed
MethylprednisoloneMethylprednisolone12suppressed
SpironolactoneSpironolactone12suppressed
Tizanidine HclTizanidine Hcl12suppressed
CefdinirCefdinir11suppressed
JanuviaSitagliptin Phosphate11suppressed
NystatinNystatin11suppressed
Telmisartan-HydrochlorothiazidTelmisartan/Hydrochlorothiazid11suppressed
TrulicityDulaglutide11suppressed

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