Healthcare provider profile · identity verified

Brian C Bai, MD

Allopathic & Osteopathic Physicians|Family Medicine · OXNARD, CA · NPI 1144424102

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 Brian C Bai, MD received $116.23 in general payments during 2025 across 6 reported records.

Novo Nordisk Inc accounted for 38.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 6 associated products.

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

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 119 claims for Ozempic 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Rybelsus by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 54 claims for Eliquis by this doctor in 2024.

PFIZER 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 PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Paxlovid by this doctor in 2024.

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

Payment overview · 2025

General Payments

$116.23

6 reported records · 3 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $44.5138.3%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $43.0937.1%22025
PFIZER INC. Unresolved — no canonical attribution shown $28.6324.6%22025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$116.236

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
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $28.63 2 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $25.24 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $24.95 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $19.56 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $19.56 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $17.85 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
Ozempic
ozempic
2025 Ozempic 2024 119 exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 24 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 24
Beneficiary count suppressed
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
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
119 27
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
54 11
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
24 23

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
Rosuvastatin CalciumRosuvastatin Calcium669206
Atorvastatin CalciumAtorvastatin Calcium466144
Losartan PotassiumLosartan Potassium372104
Levothyroxine SodiumLevothyroxine Sodium31584
Metformin HclMetformin Hcl311105
GabapentinGabapentin25062
Amlodipine BesylateAmlodipine Besylate22666
SpironolactoneSpironolactone22474
Tamsulosin HclTamsulosin Hcl21562
ValsartanValsartan16849
FamotidineFamotidine14142
LisinoprilLisinopril13738
Metoprolol SuccinateMetoprolol Succinate12735
Azelastine HclAzelastine Hcl12439
FarxigaDapagliflozin Propanediol12330
ChlorthalidoneChlorthalidone12235
Pantoprazole SodiumPantoprazole Sodium12136
OzempicSemaglutide11927
Alendronate SodiumAlendronate Sodium11543
OmeprazoleOmeprazole11528
FinasterideFinasteride11242
Glipizide ErGlipizide11137
Pioglitazone HclPioglitazone Hcl9734
EzetimibeEzetimibe9531
Metformin Hcl ErMetformin Hcl9532
JardianceEmpagliflozin9324
HydrochlorothiazideHydrochlorothiazide8732
Albuterol Sulfate HfaAlbuterol Sulfate8429
CarvedilolCarvedilol8025
TorsemideTorsemide8034
Sertraline HclSertraline Hcl7624
MounjaroTirzepatide7017
Donepezil HclDonepezil Hcl5921
AllopurinolAllopurinol5820
FurosemideFurosemide5817
TelmisartanTelmisartan5823
ClonazepamClonazepam5517
EliquisApixaban5411
Duloxetine HclDuloxetine Hcl5318
Triamcinolone AcetonideTriamcinolone Acetonide4930
Benazepril HclBenazepril Hcl4612
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4613
VascepaIcosapent Ethyl44suppressed
Montelukast SodiumMontelukast Sodium43suppressed
Trazodone HclTrazodone Hcl42suppressed
Citalopram HbrCitalopram Hydrobromide4011
Hydralazine HclHydralazine Hcl39suppressed
ClopidogrelClopidogrel Bisulfate3712
Diclofenac SodiumDiclofenac Sodium3718
OlanzapineOlanzapine3713
Cyclobenzaprine HclCyclobenzaprine Hcl36suppressed
Escitalopram OxalateEscitalopram Oxalate3615
Ipratropium BromideIpratropium Bromide3617
KerendiaFinerenone36suppressed
AzithromycinAzithromycin3429
Olmesartan MedoxomilOlmesartan Medoxomil3313
PregabalinPregabalin32suppressed
Carbidopa-LevodopaCarbidopa/Levodopa31suppressed
Pravastatin SodiumPravastatin Sodium31suppressed
MethylprednisoloneMethylprednisolone2924
Nano 2nd Gen Pen NeedlePen Needle, Diabetic2911
Doxycycline HyclateDoxycycline Hyclate2712
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr26suppressed
CreonLipase/Protease/Amylase26suppressed
MupirocinMupirocin2616
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2524
MirtazapineMirtazapine25suppressed
Doxazosin MesylateDoxazosin Mesylate24suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen24suppressed
PaxlovidNirmatrelvir/Ritonavir2423
RybelsusSemaglutide24suppressed
FluconazoleFluconazole2313
LidocaineLidocaine23suppressed
EplerenoneEplerenone22suppressed
LinzessLinaclotide21suppressed
Memantine HclMemantine Hcl21suppressed
Oxybutynin Chloride ErOxybutynin Chloride21suppressed
Humalog Kwikpen U-100Insulin Lispro20suppressed
LorazepamLorazepam20suppressed
MethocarbamolMethocarbamol20suppressed
Repatha SyringeEvolocumab20suppressed
TrulicityDulaglutide20suppressed
AtenololAtenolol19suppressed
CiclopiroxCiclopirox1911
ErythromycinErythromycin Base1911
Oxybutynin ChlorideOxybutynin Chloride19suppressed
PrednisonePrednisone1911
UrsodiolUrsodiol19suppressed
Quetiapine FumarateQuetiapine Fumarate18suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate17suppressed
Potassium ChloridePotassium Chloride17suppressed
ClotrimazoleClotrimazole16suppressed
IrbesartanIrbesartan16suppressed
Metoprolol TartrateMetoprolol Tartrate16suppressed
MetronidazoleMetronidazole1611
Trelegy ElliptaFluticasone/Umeclidin/Vilanter16suppressed
Vitamin D2Ergocalciferol (Vitamin D2)16suppressed
XareltoRivaroxaban16suppressed
Doxepin HclDoxepin Hcl15suppressed
Fluticasone PropionateFluticasone Propionate15suppressed
KetoconazoleKetoconazole15suppressed
SucralfateSucralfate15suppressed
Chlorhexidine GluconateChlorhexidine Gluconate14suppressed
Diltiazem 24hr ErDiltiazem Hcl14suppressed
Hydroxyzine HclHydroxyzine Hcl14suppressed
JanuviaSitagliptin Phosphate14suppressed
MeloxicamMeloxicam14suppressed
Nebivolol HclNebivolol Hcl14suppressed
Ventolin HfaAlbuterol Sulfate14suppressed
ZaleplonZaleplon14suppressed
Zolpidem TartrateZolpidem Tartrate14suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl13suppressed
Novolog FlexpenInsulin Aspart13suppressed
Sildenafil CitrateSildenafil Citrate13suppressed
TemazepamTemazepam13suppressed
Tresiba Flextouch U-100Insulin Degludec13suppressed
Clonidine HclClonidine Hcl12suppressed
EstradiolEstradiol12suppressed
Mesalamine DrMesalamine12suppressed
ProliaDenosumab12suppressed
TopiramateTopiramate12suppressed
AripiprazoleAripiprazole11suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone11suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog11suppressed
Bupropion XlBupropion Hcl11suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium11suppressed
GlipizideGlipizide11suppressed
LactuloseLactulose11suppressed

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 $116.23 · 6 records Novo Nordisk Inc Cologuard Collection Kit, Ozempic, PAXLOVID, Rybelsus, The Cologuard Plus Collection Kit, Wegovy 4
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