Healthcare provider profile · identity verified

Bryan Dee Chastain, M.D.

Allopathic & Osteopathic Physicians|Family Medicine · MC MINNVILLE, TN · NPI 1023019429

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 Bryan Dee Chastain, M.D. received $506.88 in general payments during 2025 across 31 reported records.

Novartis Pharmaceuticals Corporation accounted for 32.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 14 associated products.

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

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 13 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 21 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 83 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 12 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 95 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

$506.88

31 reported records · 9 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
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $166.8032.9%142025
Lilly USA, LLC Unresolved — no canonical attribution shown $90.5417.9%52025
Novo Nordisk Inc Unresolved — no canonical attribution shown $65.7513.0%32025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $55.4610.9%32025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $45.449.0%22025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $38.587.6%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $16.023.2%12025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $14.592.9%12025
Amgen Inc. Unresolved — no canonical attribution shown $13.702.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$506.8831

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
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $166.80 14 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $90.54 5 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $55.46 3 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $47.81 2 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $45.44 2 2025
Source payment records
GVOKE HYPOPEN
Normalized: gvoke hypopen
Drug Xeris Pharmaceuticals, Inc. $38.58 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $17.94 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $17.94 1 2025
Source payment records
Saxenda
Normalized: saxenda
Drug Novo Nordisk Inc $17.66 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $16.02 1 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $16.02 1 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $14.59 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $13.70 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $13.70 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
MOUNJARO
mounjaro
2025 Mounjaro 2024 83 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 95 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
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
13 suppressed by CMS
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
21 suppressed by CMS
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
83 14
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
12 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
95 16

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 Calcium390110
Rosuvastatin CalciumRosuvastatin Calcium29088
Levothyroxine SodiumLevothyroxine Sodium25157
Amlodipine BesylateAmlodipine Besylate24768
OmeprazoleOmeprazole20856
LisinoprilLisinopril18452
GabapentinGabapentin18234
FamotidineFamotidine15950
HydrochlorothiazideHydrochlorothiazide15244
Losartan PotassiumLosartan Potassium14444
Metformin HclMetformin Hcl14334
Metformin Hcl ErMetformin Hcl13040
FurosemideFurosemide12936
AllopurinolAllopurinol11735
CarvedilolCarvedilol11734
Pantoprazole SodiumPantoprazole Sodium11134
Sertraline HclSertraline Hcl10727
Metoprolol TartrateMetoprolol Tartrate10224
Potassium ChloridePotassium Chloride9925
Metoprolol SuccinateMetoprolol Succinate9723
OzempicSemaglutide9516
SimvastatinSimvastatin9219
Alendronate SodiumAlendronate Sodium8422
MounjaroTirzepatide8314
Tamsulosin HclTamsulosin Hcl7823
ValsartanValsartan7822
Fluticasone PropionateFluticasone Propionate7624
ClopidogrelClopidogrel Bisulfate7225
ClonazepamClonazepam68suppressed
FarxigaDapagliflozin Propanediol6712
EliquisApixaban6015
EzetimibeEzetimibe6015
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5916
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide4613
Citalopram HbrCitalopram Hydrobromide42suppressed
LorazepamLorazepam42suppressed
Pravastatin SodiumPravastatin Sodium4214
Duloxetine HclDuloxetine Hcl4113
SpironolactoneSpironolactone4112
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide39suppressed
Tramadol HclTramadol Hcl3914
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen38suppressed
ChlorthalidoneChlorthalidone35suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate35suppressed
PrednisonePrednisone3512
BaclofenBaclofen34suppressed
Albuterol Sulfate HfaAlbuterol Sulfate3313
AlprazolamAlprazolam33suppressed
Fluoxetine HclFluoxetine Hcl32suppressed
Trazodone HclTrazodone Hcl32suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3219
GlyxambiEmpagliflozin/Linagliptin31suppressed
FinasterideFinasteride30suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen30suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril29suppressed
Ropinirole HclRopinirole Hcl29suppressed
MeloxicamMeloxicam2813
Tresiba Flextouch U-100Insulin Degludec27suppressed
Warfarin SodiumWarfarin Sodium27suppressed
Benazepril HclBenazepril Hcl26suppressed
Carbidopa-LevodopaCarbidopa/Levodopa26suppressed
Amitriptyline HclAmitriptyline Hcl24suppressed
Buspirone HclBuspirone Hcl23suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog23suppressed
Olmesartan MedoxomilOlmesartan Medoxomil23suppressed
SynthroidLevothyroxine Sodium23suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2117
JardianceEmpagliflozin21suppressed
MethylprednisoloneMethylprednisolone2120
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide21suppressed
AtenololAtenolol20suppressed
MirtazapineMirtazapine20suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
Venlafaxine Hcl ErVenlafaxine Hcl20suppressed
BumetanideBumetanide19suppressed
Bupropion XlBupropion Hcl19suppressed
PregabalinPregabalin19suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium18suppressed
Hydralazine HclHydralazine Hcl18suppressed
KetoconazoleKetoconazole18suppressed
TorsemideTorsemide18suppressed
Escitalopram OxalateEscitalopram Oxalate17suppressed
Montelukast SodiumMontelukast Sodium17suppressed
Nifedipine ErNifedipine17suppressed
Paroxetine HclParoxetine Hcl17suppressed
Testosterone CypionateTestosterone Cypionate17suppressed
TradjentaLinagliptin17suppressed
CephalexinCephalexin1613
LansoprazoleLansoprazole16suppressed
Pioglitazone HclPioglitazone Hcl16suppressed
ValacyclovirValacyclovir Hcl16suppressed
Breo ElliptaFluticasone/Vilanterol15suppressed
IndapamideIndapamide15suppressed
Nortriptyline HclNortriptyline Hcl15suppressed
Propranolol HclPropranolol Hcl15suppressed
TestosteroneTestosterone15suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
OxycontinOxycodone Hcl14suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid14suppressed
Zolpidem TartrateZolpidem Tartrate14suppressed
BelsomraSuvorexant13suppressed
DiazepamDiazepam13suppressed
Metoclopramide HclMetoclopramide Hcl13suppressed
MyrbetriqMirabegron13suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter13suppressed
IbuIbuprofen12suppressed
Meclizine HclMeclizine Hcl12suppressed
Nebivolol HclNebivolol Hcl12suppressed
Propranolol Hcl ErPropranolol Hcl12suppressed
Terazosin HclTerazosin Hcl12suppressed
TrulicityDulaglutide12suppressed
ViberziEluxadoline12suppressed
Advair HfaFluticasone Propion/Salmeterol11suppressed
CefdinirCefdinir11suppressed
GlipizideGlipizide11suppressed
Repatha SureclickEvolocumab11suppressed
Vilazodone HclVilazodone 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 $506.88 · 31 records Novartis Pharmaceuticals Corporation AREXVY, CAPLYTA, GVOKE HYPOPEN, Kerendia, LEQVIO, MOUNJARO, OTEZLA, Ozempic, REPATHA, REXULTI, Rybelsus, SHINGRIX, Saxenda, Wegovy 5
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