Healthcare provider profile · identity verified

Charles C Gregory, DO PA

Allopathic & Osteopathic Physicians|Family Medicine · PORTLAND, TX · NPI 1477581221

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 Charles C Gregory, DO PA received $85.17 in general payments during 2025 across 5 reported records.

Exact Sciences Corporation accounted for 46.1% 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, Rybelsus.

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 11 claims for Synthroid 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 57 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 21 claims for Rybelsus by this doctor in 2024.

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

Payment overview · 2025

General Payments

$85.17

5 reported records · 4 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
Exact Sciences Corporation Unresolved — no canonical attribution shown $39.2446.1%22025
ABBVIE INC. Unresolved — no canonical attribution shown $22.2326.1%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $13.9816.4%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $9.7211.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$85.175

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
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $39.24 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $22.23 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $22.23 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $13.98 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $13.98 1 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $9.72 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 57 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 21
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
11 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
57 15
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
21 suppressed by CMS

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
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen58079
Atorvastatin CalciumAtorvastatin Calcium389154
Levothyroxine SodiumLevothyroxine Sodium378133
LisinoprilLisinopril271100
Pantoprazole SodiumPantoprazole Sodium22590
GabapentinGabapentin21875
Amlodipine BesylateAmlodipine Besylate21781
MeloxicamMeloxicam20892
Losartan PotassiumLosartan Potassium20576
PrednisonePrednisone175131
Metformin HclMetformin Hcl17364
Tamsulosin HclTamsulosin Hcl15461
Albuterol Sulfate HfaAlbuterol Sulfate15252
FurosemideFurosemide14860
Tramadol HclTramadol Hcl14347
Metoprolol SuccinateMetoprolol Succinate13954
Sertraline HclSertraline Hcl13955
SimvastatinSimvastatin13746
HydrochlorothiazideHydrochlorothiazide12945
EliquisApixaban12632
Cyclobenzaprine HclCyclobenzaprine Hcl12358
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12239
ClonazepamClonazepam11731
Montelukast SodiumMontelukast Sodium10643
Alendronate SodiumAlendronate Sodium10536
CefdinirCefdinir10588
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide9941
AlprazolamAlprazolam9829
CelecoxibCelecoxib9050
OmeprazoleOmeprazole8937
Rosuvastatin CalciumRosuvastatin Calcium8940
Escitalopram OxalateEscitalopram Oxalate8532
Acetaminophen-CodeineAcetaminophen With Codeine8429
Pravastatin SodiumPravastatin Sodium8333
ClopidogrelClopidogrel Bisulfate8134
Potassium ChloridePotassium Chloride8131
LorazepamLorazepam7534
Trazodone HclTrazodone Hcl7329
MounjaroTirzepatide7013
FamotidineFamotidine6825
MethocarbamolMethocarbamol6827
JardianceEmpagliflozin6718
TemazepamTemazepam5915
Bupropion XlBupropion Hcl5822
OzempicSemaglutide5715
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip5635
FarxigaDapagliflozin Propanediol5518
AllopurinolAllopurinol5323
Ibandronate SodiumIbandronate Sodium5318
Fluticasone PropionateFluticasone Propionate5230
Tizanidine HclTizanidine Hcl5213
GlipizideGlipizide5016
Donepezil HclDonepezil Hcl4921
Duloxetine HclDuloxetine Hcl4817
CarvedilolCarvedilol4715
EzetimibeEzetimibe4721
Metoprolol TartrateMetoprolol Tartrate4723
PregabalinPregabalin4717
ValsartanValsartan4513
Glipizide ErGlipizide4420
SpironolactoneSpironolactone4418
Citalopram HbrCitalopram Hydrobromide41suppressed
BumetanideBumetanide4017
Hydroxyzine HclHydroxyzine Hcl4017
Zolpidem TartrateZolpidem Tartrate4013
Desvenlafaxine Succinate ErDesvenlafaxine Succinate37suppressed
Doxycycline MonohydrateDoxycycline Monohydrate3734
DiazepamDiazepam3614
Ondansetron OdtOndansetron3518
Pioglitazone HclPioglitazone Hcl34suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3331
AtenololAtenolol3311
Dicyclomine HclDicyclomine Hcl3311
FinasterideFinasteride33suppressed
Venlafaxine Hcl ErVenlafaxine Hcl3313
XareltoRivaroxaban3312
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim3228
Ciprofloxacin HclCiprofloxacin Hcl3025
Clonidine HclClonidine Hcl3013
Diltiazem 24hr Er (Cd)Diltiazem Hcl3013
Doxazosin MesylateDoxazosin Mesylate3011
Lantus SolostarInsulin Glargine,hum.Rec.Anlog30suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine29suppressed
SymbicortBudesonide/Formoterol Fumarate29suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol2813
Warfarin SodiumWarfarin Sodium27suppressed
FenofibrateFenofibrate2612
NaproxenNaproxen25suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2419
Metformin Hcl ErMetformin Hcl22suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic22suppressed
Nebivolol HclNebivolol Hcl22suppressed
NitroglycerinNitroglycerin22suppressed
Olmesartan MedoxomilOlmesartan Medoxomil22suppressed
Propranolol HclPropranolol Hcl22suppressed
Testosterone CypionateTestosterone Cypionate22suppressed
IbuprofenIbuprofen2112
RybelsusSemaglutide21suppressed
ValacyclovirValacyclovir Hcl2115
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide21suppressed
Memantine HclMemantine Hcl20suppressed
Oxybutynin Chloride ErOxybutynin Chloride20suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter20suppressed
FluconazoleFluconazole1915
MyrbetriqMirabegron19suppressed
Promethazine HclPromethazine Hcl19suppressed
Buspirone HclBuspirone Hcl18suppressed
Quetiapine FumarateQuetiapine Fumarate18suppressed
Terbinafine HclTerbinafine Hcl18suppressed
Tresiba Flextouch U-100Insulin Degludec18suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
Fluoxetine HclFluoxetine Hcl17suppressed
Diclofenac SodiumDiclofenac Sodium16suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium16suppressed
Metoclopramide HclMetoclopramide Hcl16suppressed
OlanzapineOlanzapine16suppressed
IrbesartanIrbesartan15suppressed
ChlorthalidoneChlorthalidone14suppressed
EstradiolEstradiol14suppressed
PaxlovidNirmatrelvir/Ritonavir1414
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog14suppressed
Ventolin HfaAlbuterol Sulfate14suppressed
LovastatinLovastatin13suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl13suppressed
RamiprilRamipril13suppressed
Sumatriptan SuccinateSumatriptan Succinate13suppressed
LatanoprostLatanoprost12suppressed
LevetiracetamLevetiracetam12suppressed
NabumetoneNabumetone12suppressed
Soliqua 100-33Insulin Glargine/Lixisenatide12suppressed
Triamcinolone AcetonideTriamcinolone Acetonide12suppressed
FentanylFentanyl11suppressed
GlyburideGlyburide11suppressed
JantovenWarfarin Sodium11suppressed
JanuviaSitagliptin Phosphate11suppressed
SynthroidLevothyroxine Sodium11suppressed
TobramycinTobramycin11suppressed

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 $85.17 · 5 records Exact Sciences Corporation Cologuard Collection Kit, Ozempic, QULIPTA, Rybelsus, UBRELVY, VOQUEZNA 3
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