Healthcare provider profile · identity verified

Gregory A Robertson, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · NEWPORT BEACH, CA · NPI 1932281011

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 Gregory A Robertson, M.D. received $1,545.87 in general payments during 2025 across 68 reported records.

AstraZeneca Pharmaceuticals LP accounted for 23.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 23 associated products.

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

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 45 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 BRILINTA as an associated drug or biological on 993 records involving 512 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Brilinta 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 40 claims for Farxiga by this doctor in 2024.

Azurity Pharmaceuticals, 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 EDARBYCLOR as an associated drug or biological on 283 records involving 215 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Edarbyclor by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 84 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 84 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 125 claims for Mounjaro 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 109 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

$1,545.87

68 reported records · 17 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
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $359.7823.3%172025
Amgen Inc. Unresolved — no canonical attribution shown $260.9916.9%162025
Novo Nordisk Inc Unresolved — no canonical attribution shown $215.0213.9%62025
Lilly USA, LLC Unresolved — no canonical attribution shown $144.919.4%62025
Pharming Healthcare, Inc. Unresolved — no canonical attribution shown $82.425.3%42025
Exact Sciences Corporation Unresolved — no canonical attribution shown $80.735.2%32025
Corcept Therapeutics Unresolved — no canonical attribution shown $70.544.6%32025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $70.284.5%32025
Radius Health, Inc. Unresolved — no canonical attribution shown $48.843.2%22025
ABBVIE INC. Unresolved — no canonical attribution shown $33.062.1%12025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $31.462.0%12025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $30.812.0%12025
Cycle Pharmaceuticals Inc Unresolved — no canonical attribution shown $30.031.9%12025
Avadel CNS Pharmaceuticals, LLC Unresolved — no canonical attribution shown $29.561.9%12025
Lucid Diagnostics Inc. Unresolved — no canonical attribution shown $24.161.6%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $17.511.1%12025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $15.771.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,545.8768

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
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $257.31 12 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $228.48 12 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $183.90 3 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $157.11 6 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $120.18 5 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $95.01 4 2025
Source payment records
RUCONEST
Normalized: ruconest
Biological Pharming Healthcare, Inc. $82.42 4 2025
Source payment records
Korlym
Normalized: korlym
Drug Corcept Therapeutics $70.54 3 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $54.62 3 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $50.33 2 2025
Source payment records
Tymlos
Normalized: tymlos
Drug Radius Health, Inc. $48.84 2 2025
Source payment records
SYNTHROID
Normalized: synthroid
Drug ABBVIE INC. $33.06 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $32.51 4 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $32.51 4 2025
Source payment records
HORIZANT
Normalized: horizant
Drug Azurity Pharmaceuticals, Inc. $31.46 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $31.12 3 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $30.81 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $30.40 1 2025
Source payment records
Sajazir
Normalized: sajazir
Drug Cycle Pharmaceuticals Inc $30.03 1 2025
Source payment records
LUMRYZ
Normalized: lumryz
Drug Avadel CNS Pharmaceuticals, LLC $29.56 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $25.85 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $17.51 1 2025
Source payment records
  • 2025-05-01 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.51 · Open Payments source
KEVEYIS
Normalized: keveyis
Drug Xeris Pharmaceuticals, Inc. $15.77 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 40 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 84 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 125 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 109 exact normalized Medicare Part D
SYNTHROID
synthroid
2025 Synthroid 2024 45
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
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
45 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 BRILINTA
open payments reported associated product
CMS Open Payments — General Payments
993 supporting records · 512 recipient NPIs · example record 1206131430
Brilinta · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
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
40 14
Azurity Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 EDARBYCLOR
open payments reported associated product
CMS Open Payments — General Payments
283 supporting records · 215 recipient NPIs · example record 1242666846
Edarbyclor · 2024
Exact normalized brand match · 1 Part D row
22 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
84 20
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
84 20
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
125 17
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
109 21

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 Calcium24274
Levothyroxine SodiumLevothyroxine Sodium23159
IrbesartanIrbesartan14453
Pantoprazole SodiumPantoprazole Sodium12643
MounjaroTirzepatide12517
AlprazolamAlprazolam10925
OzempicSemaglutide10921
Trazodone HclTrazodone Hcl8830
Zolpidem TartrateZolpidem Tartrate8720
JardianceEmpagliflozin8420
Atorvastatin CalciumAtorvastatin Calcium7923
Amlodipine BesylateAmlodipine Besylate7725
AllopurinolAllopurinol7622
EliquisApixaban7216
Metformin Hcl ErMetformin Hcl6419
Metoprolol SuccinateMetoprolol Succinate6319
EzetimibeEzetimibe5818
Diclofenac SodiumDiclofenac Sodium5714
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid5422
FinasterideFinasteride5316
Diclofenac PotassiumDiclofenac Potassium5218
MinoxidilMinoxidil5215
Tramadol HclTramadol Hcl5216
Duloxetine HclDuloxetine Hcl51suppressed
Tamsulosin HclTamsulosin Hcl5118
TestosteroneTestosterone4912
GabapentinGabapentin4814
EstradiolEstradiol4713
SynthroidLevothyroxine Sodium45suppressed
DutasterideDutasteride4413
Montelukast SodiumMontelukast Sodium4313
LorazepamLorazepam4112
FarxigaDapagliflozin Propanediol4014
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen4018
Losartan PotassiumLosartan Potassium3912
AzithromycinAzithromycin3831
CelecoxibCelecoxib38suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3630
MyrbetriqMirabegron36suppressed
ValacyclovirValacyclovir Hcl36suppressed
VascepaIcosapent Ethyl3611
Fluoxetine HclFluoxetine Hcl35suppressed
Repatha SureclickEvolocumab34suppressed
TelmisartanTelmisartan3311
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3225
Pioglitazone HclPioglitazone Hcl32suppressed
Ondansetron OdtOndansetron30suppressed
Potassium ChloridePotassium Chloride3012
Alendronate SodiumAlendronate Sodium2921
Metformin HclMetformin Hcl2911
TemazepamTemazepam27suppressed
Fludrocortisone AcetateFludrocortisone Acetate25suppressed
Olmesartan MedoxomilOlmesartan Medoxomil25suppressed
Escitalopram OxalateEscitalopram Oxalate24suppressed
CarvedilolCarvedilol23suppressed
PrimidonePrimidone23suppressed
Ciprofloxacin HclCiprofloxacin Hcl2216
EdarbyclorAzilsartan Med/Chlorthalidone22suppressed
FurosemideFurosemide22suppressed
ImiquimodImiquimod2219
Venlafaxine Hcl ErVenlafaxine Hcl22suppressed
XareltoRivaroxaban22suppressed
PregabalinPregabalin21suppressed
TadalafilTadalafil21suppressed
FluconazoleFluconazole2017
ClonazepamClonazepam19suppressed
HydrocortisoneHydrocortisone19suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate19suppressed
Pyridostigmine BromidePyridostigmine Bromide19suppressed
Amitriptyline HclAmitriptyline Hcl18suppressed
Estradiol (Twice Weekly)Estradiol18suppressed
AtenololAtenolol17suppressed
Bupropion XlBupropion Hcl17suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate17suppressed
Testosterone CypionateTestosterone Cypionate17suppressed
Doxycycline HyclateDoxycycline Hyclate16suppressed
Humalog Kwikpen U-200Insulin Lispro16suppressed
Hydromorphone HclHydromorphone Hcl16suppressed
Acebutolol HclAcebutolol Hcl15suppressed
Ipratropium BromideIpratropium Bromide15suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide15suppressed
PaxlovidNirmatrelvir/Ritonavir1513
Ranolazine ErRanolazine15suppressed
Butalb-Acetaminoph-Caff-CodeinButalbit/Acetamin/Caff/Codeine14suppressed
ClonidineClonidine14suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine14suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog14suppressed
AmoxicillinAmoxicillin13suppressed
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl13suppressed
OmeprazoleOmeprazole13suppressed
Quetiapine FumarateQuetiapine Fumarate13suppressed
Sertraline HclSertraline Hcl13suppressed
Carbidopa-LevodopaCarbidopa/Levodopa12suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen12suppressed
Ondansetron HclOndansetron Hcl12suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl12suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim12suppressed
Triamcinolone AcetonideTriamcinolone Acetonide12suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol11suppressed
BrilintaTicagrelor11suppressed
SilodosinSilodosin11suppressed
SpironolactoneSpironolactone11suppressed

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 $1,545.87 · 68 records AstraZeneca Pharmaceuticals LP AIRSUPRA, Cologuard Collection Kit, EVENITY, FARXIGA, GEMTESA, HORIZANT, JARDIANCE, KEVEYIS, Korlym, LUMRYZ, MOUNJARO, OTEZLA, Ozempic, PROLIA, REPATHA, RUCONEST, Rybelsus, SYNTHROID, Sajazir, The Cologuard Plus Collection Kit, Tymlos, Wegovy, XIFAXAN 8
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