Healthcare provider profile · identity verified

Robert David Byers, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · SANTA BARBARA, CA · NPI 1891837480

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 Robert David Byers, M.D. received $999.99 in general payments during 2025 across 50 reported records.

Amgen Inc. accounted for 21.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 33 associated products.

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

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 52 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 16 claims for Farxiga 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 41 claims for Ozempic 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 117 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 62 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

$999.99

50 reported records · 15 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
Amgen Inc. Unresolved — no canonical attribution shown $213.3621.3%142025
PFIZER INC. Unresolved — no canonical attribution shown $186.0518.6%82025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $180.0218.0%92025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $103.9510.4%42025
ABBVIE INC. Unresolved — no canonical attribution shown $51.385.1%32025
Lundbeck LLC Unresolved — no canonical attribution shown $50.655.1%22025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $42.434.2%22025
ARS Pharmaceuticals Operations, Inc. Unresolved — no canonical attribution shown $28.292.8%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $25.972.6%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $23.012.3%12025
TOLMAR, INC. Unresolved — no canonical attribution shown $20.682.1%12025
Seqirus USA Inc Unresolved — no canonical attribution shown $20.632.1%12025
IBSA Pharma Inc. Unresolved — no canonical attribution shown $20.532.0%12025
Almatica Pharma LLC Unresolved — no canonical attribution shown $16.651.7%12025
ALK-Abello, Inc Unresolved — no canonical attribution shown $16.391.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$999.9950

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
REPATHA
Normalized: repatha
Biological Amgen Inc. $111.27 10 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $103.95 4 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $102.09 4 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $80.33 4 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $79.45 4 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $79.45 4 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $79.45 4 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $78.96 4 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $53.40 2 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $53.40 2 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $50.65 2 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $42.43 2 2025
Source payment records
  • 2025-01-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $20.58 · Open Payments source
  • 2025-07-08 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $21.85 · Open Payments source
OTEZLA
Normalized: otezla
Drug Amgen Inc. $40.04 5 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $39.00 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $35.13 2 2025
Source payment records
NEFFY
Normalized: neffy
Drug ARS Pharmaceuticals Operations, Inc. $28.29 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $25.97 1 2025
Source payment records
GARDASIL 9
Normalized: gardasil 9
Biological Merck Sharp & Dohme LLC $25.97 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $23.01 1 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $20.73 1 2025
Source payment records
JATENZO
Normalized: jatenzo
Drug TOLMAR, INC. $20.68 1 2025
Source payment records
Flucelvax
Normalized: flucelvax
Biological Seqirus USA Inc $20.63 1 2025
Source payment records
Flector
Normalized: flector
Drug IBSA Pharma Inc. $20.53 1 2025
Source payment records
Licart
Normalized: licart
Drug IBSA Pharma Inc. $20.53 1 2025
Source payment records
Tirosint
Normalized: tirosint
Drug IBSA Pharma Inc. $20.53 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $18.22 1 2025
Source payment records
LOREEV XR
Normalized: loreev xr
Drug Almatica Pharma LLC $16.65 1 2025
Source payment records
TERIPARATIDE
Normalized: teriparatide
Drug Almatica Pharma LLC $16.65 1 2025
Source payment records
Grastek
Normalized: grastek
Drug ALK-Abello, Inc $16.39 1 2025
Source payment records
Odactra
Normalized: odactra
Drug ALK-Abello, Inc $16.39 1 2025
Source payment records
Ragwitek
Normalized: ragwitek
Drug ALK-Abello, Inc $16.39 1 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $16.25 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $4.67 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
ELIQUIS
eliquis
2025 Eliquis 2024 117 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 62 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
52 16
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
16 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
41 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
117 34
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
62 62

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 Calcium542148
Levothyroxine SodiumLevothyroxine Sodium368103
Losartan PotassiumLosartan Potassium33495
Tamsulosin HclTamsulosin Hcl20858
AlprazolamAlprazolam18565
Rosuvastatin CalciumRosuvastatin Calcium17354
Amlodipine BesylateAmlodipine Besylate17056
MeloxicamMeloxicam16940
OmeprazoleOmeprazole16652
Metformin Hcl ErMetformin Hcl16144
Pantoprazole SodiumPantoprazole Sodium16063
Escitalopram OxalateEscitalopram Oxalate14743
Vitamin D2Ergocalciferol (Vitamin D2)13940
ChlorthalidoneChlorthalidone13247
LorazepamLorazepam13234
Metoprolol SuccinateMetoprolol Succinate12837
EliquisApixaban11734
LisinoprilLisinopril11731
GabapentinGabapentin11435
Zolpidem TartrateZolpidem Tartrate10846
Benazepril HclBenazepril Hcl10528
FurosemideFurosemide10328
Potassium ChloridePotassium Chloride10031
CelecoxibCelecoxib9632
FinasterideFinasteride9428
AllopurinolAllopurinol8925
Fluticasone PropionateFluticasone Propionate8543
Diltiazem 24hr Er (Cd)Diltiazem Hcl8325
AtenololAtenolol8226
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen8222
Tramadol HclTramadol Hcl8224
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim8064
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav7966
TemazepamTemazepam7826
SimvastatinSimvastatin7725
Bupropion XlBupropion Hcl7624
ValacyclovirValacyclovir Hcl7631
Trazodone HclTrazodone Hcl7227
ClopidogrelClopidogrel Bisulfate7021
XareltoRivaroxaban7018
PaxlovidNirmatrelvir/Ritonavir6262
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen5826
Montelukast SodiumMontelukast Sodium5619
PrednisonePrednisone5431
Sumatriptan SuccinateSumatriptan Succinate53suppressed
Carbidopa-LevodopaCarbidopa/Levodopa5212
SynthroidLevothyroxine Sodium5216
Ciprofloxacin HclCiprofloxacin Hcl5041
MyrbetriqMirabegron5011
Diclofenac Sodium ErDiclofenac Sodium4616
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid4415
OzempicSemaglutide41suppressed
Propranolol HclPropranolol Hcl4021
Albuterol Sulfate HfaAlbuterol Sulfate3714
Repatha SureclickEvolocumab37suppressed
Azelastine HclAzelastine Hcl3613
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine3613
SilodosinSilodosin3613
Cyclobenzaprine HclCyclobenzaprine Hcl3518
EzetimibeEzetimibe3512
HydrocortisoneHydrocortisone35suppressed
JardianceEmpagliflozin33suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide33suppressed
AcyclovirAcyclovir32suppressed
EstradiolEstradiol3114
Quetiapine FumarateQuetiapine Fumarate31suppressed
Citalopram HbrCitalopram Hydrobromide30suppressed
Pravastatin SodiumPravastatin Sodium30suppressed
HydrochlorothiazideHydrochlorothiazide29suppressed
Doxycycline HyclateDoxycycline Hyclate2813
Duloxetine HclDuloxetine Hcl28suppressed
SpironolactoneSpironolactone28suppressed
AzithromycinAzithromycin2725
Enalapril MaleateEnalapril Maleate27suppressed
Glipizide ErGlipizide27suppressed
Amitriptyline HclAmitriptyline Hcl26suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium25suppressed
Ropinirole HclRopinirole Hcl25suppressed
BumetanideBumetanide24suppressed
Olmesartan MedoxomilOlmesartan Medoxomil24suppressed
RamiprilRamipril24suppressed
NitroglycerinNitroglycerin2314
Ondansetron OdtOndansetron23suppressed
CarisoprodolCarisoprodol22suppressed
ClonazepamClonazepam22suppressed
DottiEstradiol22suppressed
Venlafaxine Hcl ErVenlafaxine Hcl22suppressed
JanuviaSitagliptin Phosphate21suppressed
CarvedilolCarvedilol20suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine2014
MirtazapineMirtazapine20suppressed
FamotidineFamotidine18suppressed
LevofloxacinLevofloxacin18suppressed
Ondansetron HclOndansetron Hcl18suppressed
Paroxetine HclParoxetine Hcl18suppressed
Pioglitazone HclPioglitazone Hcl18suppressed
Promethazine HclPromethazine Hcl18suppressed
CephalexinCephalexin1716
CiclopiroxCiclopirox Olamine17suppressed
PregabalinPregabalin17suppressed
Sertraline HclSertraline Hcl17suppressed
SucralfateSucralfate17suppressed
TrulicityDulaglutide17suppressed
FarxigaDapagliflozin Propanediol16suppressed
IbuprofenIbuprofen16suppressed
Raloxifene HclRaloxifene Hcl16suppressed
Vivelle-DotEstradiol16suppressed
AmoxicillinAmoxicillin15suppressed
Estradiol (Twice Weekly)Estradiol15suppressed
Fludrocortisone AcetateFludrocortisone Acetate15suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol15suppressed
TelmisartanTelmisartan15suppressed
TestosteroneTestosterone15suppressed
Doxepin HclDoxepin Hcl14suppressed
Metoprolol TartrateMetoprolol Tartrate14suppressed
Praluent PenAlirocumab14suppressed
ValsartanValsartan14suppressed
Diltiazem 24hr Er (Xr)Diltiazem Hcl13suppressed
EntrestoSacubitril/Valsartan13suppressed
Methenamine HippurateMethenamine Hippurate13suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip12suppressed
ColchicineColchicine12suppressed
IndomethacinIndomethacin12suppressed
IrbesartanIrbesartan12suppressed
Midodrine HclMidodrine Hcl12suppressed
NystatinNystatin12suppressed
PiroxicamPiroxicam12suppressed
RizatriptanRizatriptan Benzoate12suppressed
Donepezil HclDonepezil Hcl11suppressed
EszopicloneEszopiclone11suppressed
Indomethacin ErIndomethacin11suppressed
MethylprednisoloneMethylprednisolone1111
MupirocinMupirocin11suppressed
Oxybutynin Chloride ErOxybutynin Chloride11suppressed
Testosterone CypionateTestosterone Cypionate11suppressed

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 $999.99 · 50 records Amgen Inc. ABRYSVO, AIRSUPRA, BREZTRI, CAPVAXIVE, COMIRNATY, ELIQUIS, EVENITY, FARXIGA, Flector, Flucelvax, GARDASIL 9, Grastek, JATENZO, LINZESS, LOREEV XR, Licart, NEFFY, NURTEC ODT, OTEZLA, Odactra, PAXLOVID, PREVNAR 20, PROLIA, QULIPTA, REPATHA, REXULTI, Ragwitek, TERIPARATIDE, Tirosint, UBRELVY, VOQUEZNA, Wegovy, XIFAXAN 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