Healthcare provider profile · identity verified

Clay Thomas Buchanan, M.D.

Allopathic & Osteopathic Physicians|Family Medicine · NEW BRAUNFELS, TX · NPI 1578900486

Profile state: payments and partd 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

CMS Open Payments records show Clay Thomas Buchanan, M.D. received $522.01 in general payments during 2025 across 37 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 33.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 15 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Mounjaro, Ozempic, Trelegy Ellipta.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 46 claims for Synthroid by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Farxiga by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Trelegy Ellipta by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 67 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 35 claims for Mounjaro by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Trulicity by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 115 claims for Ozempic by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$522.01

37 reported records · 13 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $173.3433.2%232025
Globus Medical, Inc. Unresolved — no canonical attribution shown $114.8322.0%12025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $39.417.5%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $29.695.7%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $22.694.3%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $20.994.0%12025
Inspire Medical Systems, Inc. Unresolved — no canonical attribution shown $20.814.0%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $19.353.7%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $19.163.7%12025
ABBVIE INC. Unresolved — no canonical attribution shown $16.943.2%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $16.043.1%12025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $14.532.8%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $14.232.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$522.0137

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $173.34 23 2025
Source payment records
Senza
Normalized: senza
Device Globus Medical, Inc. $114.83 1 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $39.41 2 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $29.69 2 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $22.69 1 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $22.69 1 2025
Source payment records
TRINTELLIX
Normalized: trintellix
Drug Takeda Pharmaceuticals U.S.A., Inc. $20.99 1 2025
Source payment records
INSPIRE
Normalized: inspire
Device Inspire Medical Systems, Inc. $20.81 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $19.35 1 2025
Source payment records
  • 2025-03-06 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.35 · Open Payments source
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $19.16 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $19.16 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $16.04 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $16.04 1 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $14.53 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $14.23 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
FARXIGA
farxiga
2025 Farxiga 2024 31
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 35
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 115 exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 25 exact normalized Medicare Part D

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
46 17
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
31 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
25 14
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
67 21
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
35 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
39 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
115 33

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
Levothyroxine SodiumLevothyroxine Sodium441142
Atorvastatin CalciumAtorvastatin Calcium437151
Losartan PotassiumLosartan Potassium24090
Rosuvastatin CalciumRosuvastatin Calcium23786
Amlodipine BesylateAmlodipine Besylate23279
GabapentinGabapentin17272
LisinoprilLisinopril16765
PrednisonePrednisone155122
Tamsulosin HclTamsulosin Hcl15455
Montelukast SodiumMontelukast Sodium15360
Trazodone HclTrazodone Hcl15356
Metformin HclMetformin Hcl14755
Sertraline HclSertraline Hcl13737
Metoprolol SuccinateMetoprolol Succinate13449
OmeprazoleOmeprazole11538
OzempicSemaglutide11533
FurosemideFurosemide10448
HydrochlorothiazideHydrochlorothiazide10041
AlprazolamAlprazolam9530
Pantoprazole SodiumPantoprazole Sodium9242
Albuterol Sulfate HfaAlbuterol Sulfate8938
Escitalopram OxalateEscitalopram Oxalate8033
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide7724
Zolpidem TartrateZolpidem Tartrate7222
Tramadol HclTramadol Hcl7124
Fluticasone PropionateFluticasone Propionate7024
CarvedilolCarvedilol6923
Bupropion XlBupropion Hcl6726
JardianceEmpagliflozin6721
Pravastatin SodiumPravastatin Sodium6722
AllopurinolAllopurinol6020
Duloxetine HclDuloxetine Hcl5922
MeloxicamMeloxicam5623
Fluoxetine HclFluoxetine Hcl5419
Potassium ChloridePotassium Chloride5420
FamotidineFamotidine5219
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5218
Metoprolol TartrateMetoprolol Tartrate5219
ValsartanValsartan5219
Metformin Hcl ErMetformin Hcl5022
Buspirone HclBuspirone Hcl4916
ClopidogrelClopidogrel Bisulfate4819
Pioglitazone HclPioglitazone Hcl4818
CelecoxibCelecoxib4720
SimvastatinSimvastatin4716
Ondansetron OdtOndansetron4626
SynthroidLevothyroxine Sodium4617
EzetimibeEzetimibe4518
FinasterideFinasteride4515
GlimepirideGlimepiride4417
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4217
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst4235
Oxybutynin Chloride ErOxybutynin Chloride4220
Venlafaxine Hcl ErVenlafaxine Hcl4015
SpironolactoneSpironolactone3921
TrulicityDulaglutide39suppressed
Alendronate SodiumAlendronate Sodium35suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide3514
MounjaroTirzepatide35suppressed
ClonazepamClonazepam34suppressed
FarxigaDapagliflozin Propanediol31suppressed
ValacyclovirValacyclovir Hcl3114
Lantus SolostarInsulin Glargine,hum.Rec.Anlog30suppressed
PregabalinPregabalin3012
Hydroxyzine HclHydroxyzine Hcl2815
Acetaminophen-CodeineAcetaminophen With Codeine27suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2721
AzithromycinAzithromycin2726
Citalopram HbrCitalopram Hydrobromide2712
XareltoRivaroxaban26suppressed
Azelastine HclAzelastine Hcl2516
FluconazoleFluconazole2517
Testosterone CypionateTestosterone Cypionate2512
Trelegy ElliptaFluticasone/Umeclidin/Vilanter2514
Donepezil HclDonepezil Hcl24suppressed
Quetiapine FumarateQuetiapine Fumarate24suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl23suppressed
EstradiolEstradiol23suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl22suppressed
MethocarbamolMethocarbamol2212
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine21suppressed
Hydralazine HclHydralazine Hcl21suppressed
Meclizine HclMeclizine Hcl2115
Propranolol HclPropranolol Hcl21suppressed
BaclofenBaclofen20suppressed
Clobetasol PropionateClobetasol Propionate2016
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine20suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate20suppressed
Ropinirole HclRopinirole Hcl2011
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2020
TopiramateTopiramate20suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
LorazepamLorazepam19suppressed
Metoclopramide HclMetoclopramide Hcl19suppressed
Oxybutynin ChlorideOxybutynin Chloride19suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid19suppressed
Clonidine HclClonidine Hcl18suppressed
EliquisApixaban1811
FenofibrateFenofibrate18suppressed
FenofibrateFenofibrate Nanocrystallized18suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1814
AtenololAtenolol17suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol17suppressed
NaproxenNaproxen17suppressed
TemazepamTemazepam17suppressed
Amitriptyline HclAmitriptyline Hcl16suppressed
ChlorthalidoneChlorthalidone16suppressed
Doxycycline HyclateDoxycycline Hyclate1614
Doxycycline MonohydrateDoxycycline Monohydrate1615
Esomeprazole MagnesiumEsomeprazole Magnesium16suppressed
ProgesteroneProgesterone, Micronized16suppressed
Dicyclomine HclDicyclomine Hcl15suppressed
Olmesartan MedoxomilOlmesartan Medoxomil15suppressed
Repatha SureclickEvolocumab15suppressed
Benazepril HclBenazepril Hcl14suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine14suppressed
Diclofenac SodiumDiclofenac Sodium14suppressed
Glipizide ErGlipizide14suppressed
IrbesartanIrbesartan14suppressed
JanuviaSitagliptin Phosphate14suppressed
LamotrigineLamotrigine14suppressed
MyrbetriqMirabegron14suppressed
Nifedipine ErNifedipine14suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine1311
EszopicloneEszopiclone13suppressed
GlipizideGlipizide13suppressed
Hydroxyzine PamoateHydroxyzine Pamoate13suppressed
MetronidazoleMetronidazole1312
Breztri AerosphereBudesonide/Glycopyr/Formoterol12suppressed
DiazepamDiazepam12suppressed
Memantine HclMemantine Hcl12suppressed
Midodrine HclMidodrine Hcl12suppressed
MirtazapineMirtazapine12suppressed
Paroxetine HclParoxetine Hcl12suppressed
DapagliflozinDapagliflozin Propanediol11suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride11suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide11suppressed
Raloxifene HclRaloxifene Hcl11suppressed
Tizanidine HclTizanidine Hcl11suppressed
TradjentaLinagliptin11suppressed
Wixela InhubFluticasone Propion/Salmeterol11suppressed

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 $522.01 · 37 records Bayer Healthcare Pharmaceuticals Inc. AREXVY, CAPLYTA, Cologuard Collection Kit, FARXIGA, GEMTESA, INSPIRE, Kerendia, MOUNJARO, Ozempic, Rybelsus, Senza, TRELEGY ELLIPTA, TRINTELLIX, XIFAXAN, ZEPBOUND 7
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