Healthcare provider profile · identity verified

Gregory Robert Billings, MPAS

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Surgical · TEMPE, AZ · NPI 1598340044

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 Robert Billings, MPAS received $62.92 in general payments during 2025 across 3 reported records.

VERTEX PHARMACEUTICALS INCORPORATED accounted for 39.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

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

Payment overview · 2025

General Payments

$62.92

3 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
VERTEX PHARMACEUTICALS INCORPORATED Unresolved — no canonical attribution shown $24.6739.2%12025
Abbott Laboratories Unresolved — no canonical attribution shown $20.2132.1%12025
Amgen Inc. Unresolved — no canonical attribution shown $18.0428.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$62.923

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
JOURNAVX
Normalized: journavx
Drug VERTEX PHARMACEUTICALS INCORPORATED $24.67 1 2025
Source payment records
PROCLAIM
Normalized: proclaim
Device Abbott Laboratories $20.21 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $18.04 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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 Calcium18461
Levothyroxine SodiumLevothyroxine Sodium13141
LisinoprilLisinopril10636
Albuterol Sulfate HfaAlbuterol Sulfate9632
Losartan PotassiumLosartan Potassium8733
Amlodipine BesylateAmlodipine Besylate8639
GabapentinGabapentin7532
Rosuvastatin CalciumRosuvastatin Calcium6524
Metoprolol SuccinateMetoprolol Succinate5824
OmeprazoleOmeprazole5521
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav5245
FurosemideFurosemide5223
Metformin HclMetformin Hcl4619
Azelastine HclAzelastine Hcl4523
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4514
Pantoprazole SodiumPantoprazole Sodium4415
Tamsulosin HclTamsulosin Hcl4317
Trazodone HclTrazodone Hcl4215
Alendronate SodiumAlendronate Sodium3815
PrednisonePrednisone3524
EliquisApixaban34suppressed
JardianceEmpagliflozin31suppressed
Pravastatin SodiumPravastatin Sodium2911
MeloxicamMeloxicam2813
Duloxetine HclDuloxetine Hcl2712
Metformin Hcl ErMetformin Hcl26suppressed
Tramadol HclTramadol Hcl2613
Citalopram HbrCitalopram Hydrobromide25suppressed
Escitalopram OxalateEscitalopram Oxalate25suppressed
Sertraline HclSertraline Hcl25suppressed
SimvastatinSimvastatin25suppressed
ClopidogrelClopidogrel Bisulfate2411
FinasterideFinasteride24suppressed
Doxycycline HyclateDoxycycline Hyclate2319
HydrochlorothiazideHydrochlorothiazide23suppressed
Hydroxyzine HclHydroxyzine Hcl2312
MounjaroTirzepatide23suppressed
FenofibrateFenofibrate21suppressed
Pioglitazone HclPioglitazone Hcl21suppressed
Fluticasone PropionateFluticasone Propionate20suppressed
Tizanidine HclTizanidine Hcl2012
AlprazolamAlprazolam19suppressed
Diclofenac SodiumDiclofenac Sodium1915
FluconazoleFluconazole1915
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen1912
Potassium ChloridePotassium Chloride19suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1915
Bupropion XlBupropion Hcl18suppressed
ChlorthalidoneChlorthalidone18suppressed
LovastatinLovastatin18suppressed
TrulicityDulaglutide18suppressed
GlimepirideGlimepiride17suppressed
GlipizideGlipizide17suppressed
SymbicortBudesonide/Formoterol Fumarate17suppressed
BaclofenBaclofen15suppressed
Buspirone HclBuspirone Hcl15suppressed
MethylprednisoloneMethylprednisolone1511
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1514
Oxycodone HclOxycodone Hcl15suppressed
AtenololAtenolol14suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide14suppressed
PregabalinPregabalin14suppressed
Zolpidem TartrateZolpidem Tartrate14suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl13suppressed
Fluoxetine HclFluoxetine Hcl13suppressed
Glipizide ErGlipizide13suppressed
Hydralazine HclHydralazine Hcl13suppressed
IbuprofenIbuprofen13suppressed
Nifedipine ErNifedipine13suppressed
AripiprazoleAripiprazole12suppressed
Metoprolol TartrateMetoprolol Tartrate12suppressed
MupirocinMupirocin1211
Oxybutynin Chloride ErOxybutynin Chloride12suppressed
Paroxetine HclParoxetine Hcl12suppressed
Ropinirole HclRopinirole Hcl12suppressed
AllopurinolAllopurinol11suppressed
Dicyclomine HclDicyclomine Hcl11suppressed
NystatinNystatin11suppressed
TopiramateTopiramate11suppressed
Tresiba Flextouch U-100Insulin Degludec11suppressed

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 $62.92 · 3 records VERTEX PHARMACEUTICALS INCORPORATED EVENITY, JOURNAVX, PROCLAIM
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