Healthcare provider profile · identity verified

Darryl K Guistwite, DO

Allopathic & Osteopathic Physicians|Family Medicine · CARLISLE, PA · NPI 1609816586

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 Darryl K Guistwite, DO received $23.53 in general payments during 2025 across 1 reported records.

Novo Nordisk Inc accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

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

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 49 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

$23.53

1 reported records · 1 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 $23.53100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$23.531

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
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $23.53 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $23.53 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 49
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
49 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
Atorvastatin CalciumAtorvastatin Calcium2048128
FurosemideFurosemide1637110
Levothyroxine SodiumLevothyroxine Sodium134580
GabapentinGabapentin131873
Amlodipine BesylateAmlodipine Besylate118267
LisinoprilLisinopril115366
Pantoprazole SodiumPantoprazole Sodium109679
Metoprolol TartrateMetoprolol Tartrate106760
Tamsulosin HclTamsulosin Hcl101955
Quetiapine FumarateQuetiapine Fumarate101848
Metoprolol SuccinateMetoprolol Succinate94570
Metformin HclMetformin Hcl91944
Trazodone HclTrazodone Hcl88149
Sertraline HclSertraline Hcl86150
Donepezil HclDonepezil Hcl85748
Divalproex SodiumDivalproex Sodium84840
Duloxetine HclDuloxetine Hcl84637
Potassium ChloridePotassium Chloride81460
Escitalopram OxalateEscitalopram Oxalate77343
EliquisApixaban76264
MirtazapineMirtazapine73652
LevetiracetamLevetiracetam69626
Memantine HclMemantine Hcl63730
FamotidineFamotidine58431
OmeprazoleOmeprazole56747
OlanzapineOlanzapine53616
RisperidoneRisperidone50926
HydrochlorothiazideHydrochlorothiazide48823
Losartan PotassiumLosartan Potassium48726
Warfarin SodiumWarfarin Sodium47616
Midodrine HclMidodrine Hcl41123
ClopidogrelClopidogrel Bisulfate40733
Buspirone HclBuspirone Hcl40531
LorazepamLorazepam40066
Hydralazine HclHydralazine Hcl38816
Fluoxetine HclFluoxetine Hcl36212
CarvedilolCarvedilol34933
Hydroxyzine HclHydroxyzine Hcl34831
AllopurinolAllopurinol33718
Amiodarone HclAmiodarone Hcl31120
BumetanideBumetanide30322
Oxybutynin Chloride ErOxybutynin Chloride289suppressed
JardianceEmpagliflozin27120
Rosuvastatin CalciumRosuvastatin Calcium26916
Ondansetron HclOndansetron Hcl259119
SpironolactoneSpironolactone24922
Isosorbide Mononitrate ErIsosorbide Mononitrate24615
SimvastatinSimvastatin23819
Methenamine HippurateMethenamine Hippurate229suppressed
Pravastatin SodiumPravastatin Sodium22516
MeloxicamMeloxicam21214
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc21034
Carbidopa-LevodopaCarbidopa/Levodopa20417
FinasterideFinasteride19914
Ropinirole HclRopinirole Hcl19815
BaclofenBaclofen19712
MyrbetriqMirabegron194suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog18135
AripiprazoleAripiprazole169suppressed
Glipizide ErGlipizide167suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl166suppressed
Tramadol HclTramadol Hcl15641
Venlafaxine Hcl ErVenlafaxine Hcl155suppressed
Paroxetine HclParoxetine Hcl145suppressed
Metoclopramide HclMetoclopramide Hcl138suppressed
TrulicityDulaglutide13812
PrimidonePrimidone137suppressed
Memantine Hcl ErMemantine Hcl135suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl132suppressed
Montelukast SodiumMontelukast Sodium129suppressed
Bupropion XlBupropion Hcl125suppressed
LamotrigineLamotrigine124suppressed
JanuviaSitagliptin Phosphate123suppressed
Propranolol HclPropranolol Hcl122suppressed
Clonidine HclClonidine Hcl121suppressed
EzetimibeEzetimibe120suppressed
CephalexinCephalexin11651
XareltoRivaroxaban115suppressed
Tolterodine Tartrate ErTolterodine Tartrate113suppressed
Amitriptyline HclAmitriptyline Hcl112suppressed
RivastigmineRivastigmine Tartrate111suppressed
Bupropion Hcl SrBupropion Hcl110suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium98suppressed
Oxycodone HclOxycodone Hcl9523
PregabalinPregabalin9111
FenofibrateFenofibrate90suppressed
Isosorbide DinitrateIsosorbide Dinitrate90suppressed
Citalopram HbrCitalopram Hydrobromide8911
Ranolazine ErRanolazine88suppressed
LoperamideLoperamide Hcl8636
CalcitriolCalcitriol82suppressed
Levemir FlexpenInsulin Detemir8113
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen81suppressed
TorsemideTorsemide78suppressed
Fluticasone PropionateFluticasone Propionate7722
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate7450
Diclofenac SodiumDiclofenac Sodium7327
Cyclobenzaprine HclCyclobenzaprine Hcl7211
ClonazepamClonazepam69suppressed
GlipizideGlipizide67suppressed
Benztropine MesylateBenztropine Mesylate66suppressed
Olmesartan MedoxomilOlmesartan Medoxomil66suppressed
PrednisonePrednisone6624
Ciprofloxacin HclCiprofloxacin Hcl6134
HydrocortisoneHydrocortisone6118
Solifenacin SuccinateSolifenacin Succinate61suppressed
Alendronate SodiumAlendronate Sodium60suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen60suppressed
Triamcinolone AcetonideTriamcinolone Acetonide5932
MethimazoleMethimazole58suppressed
Bethanechol ChlorideBethanechol Chloride52suppressed
Enalapril MaleateEnalapril Maleate52suppressed
Tizanidine HclTizanidine Hcl52suppressed
TrintellixVortioxetine Hydrobromide52suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters51suppressed
LevofloxacinLevofloxacin4932
OzempicSemaglutide49suppressed
Doxazosin MesylateDoxazosin Mesylate48suppressed
Fluphenazine HclFluphenazine Hcl47suppressed
IbuprofenIbuprofen4712
Venlafaxine HclVenlafaxine Hcl47suppressed
Novofine AutocoverPen Needle, Diabetic, Safety4615
ClonidineClonidine45suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate44suppressed
Tolterodine TartrateTolterodine Tartrate44suppressed
Vilazodone HclVilazodone Hcl44suppressed
LansoprazoleLansoprazole43suppressed
BrilintaTicagrelor42suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro4212
ArexvyRsvpref3 Antigen/As01e/Pf4141
Albuterol Sulfate HfaAlbuterol Sulfate4030
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog4011
Insulin Aspart FlexpenInsulin Aspart39suppressed
Lidocaine HclLidocaine Hcl3928
Bupropion HclBupropion Hcl38suppressed
LactuloseLactulose38suppressed
LantusInsulin Glargine,hum.Rec.Anlog38suppressed
AtenololAtenolol37suppressed
GlimepirideGlimepiride37suppressed
OxycontinOxycodone Hcl37suppressed
XifaxanRifaximin37suppressed
Zolpidem TartrateZolpidem Tartrate37suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip3619
FarxigaDapagliflozin Propanediol36suppressed
LinzessLinaclotide36suppressed
Ziprasidone HclZiprasidone Hcl36suppressed
MetolazoneMetolazone35suppressed
Sevelamer CarbonateSevelamer Carbonate35suppressed
Morphine SulfateMorphine Sulfate3425
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3423
NystatinNystatin3421
AmantadineAmantadine Hcl33suppressed
Pioglitazone HclPioglitazone Hcl33suppressed
AnastrozoleAnastrozole32suppressed
EntrestoSacubitril/Valsartan32suppressed
TradjentaLinagliptin32suppressed
UrsodiolUrsodiol32suppressed
LumiganBimatoprost31suppressed
SantylCollagenase Clostridium Hist.3015
SilodosinSilodosin30suppressed
LovastatinLovastatin29suppressed
Polymyxin B Sul-TrimethoprimPolymyxin B Sulf/Trimethoprim2921
Doxycycline HyclateDoxycycline Hyclate2813
MeropenemMeropenem28suppressed
CeftriaxoneCeftriaxone Sodium2718
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2722
AlprazolamAlprazolam26suppressed
LatanoprostLatanoprost26suppressed
NexiumEsomeprazole Magnesium26suppressed
Atropine SulfateAtropine Sulfate2419
Azelastine HclAzelastine Hcl24suppressed
CarbamazepineCarbamazepine24suppressed
NyamycNystatin2416
CelecoxibCelecoxib23suppressed
SymbicortBudesonide/Formoterol Fumarate23suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter23suppressed
Combivent RespimatIpratropium/Albuterol Sulfate22suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol22suppressed
SucralfateSucralfate22suppressed
Breo ElliptaFluticasone/Vilanterol21suppressed
Clobetasol PropionateClobetasol Propionate21suppressed
Mirabegron ErMirabegron21suppressed
DigoxinDigoxin20suppressed
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro20suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1915
IrbesartanIrbesartan19suppressed
LevemirInsulin Detemir19suppressed
NitroglycerinNitroglycerin1917
RepaglinideRepaglinide19suppressed
Advair DiskusFluticasone Propion/Salmeterol18suppressed
FluconazoleFluconazole1813
Ammonium LactateAmmonium Lactate17suppressed
AmoxicillinAmoxicillin17suppressed
DaptomycinDaptomycin17suppressed
Novolog FlexpenInsulin Aspart17suppressed
Vancomycin HclVancomycin Hcl17suppressed
AbrysvoRsv Vacc, Pref A And Pref B/Pf1616
AzithromycinAzithromycin1612
ColchicineColchicine16suppressed
FenofibrateFenofibrate Nanocrystallized16suppressed
Humalog Kwikpen U-100Insulin Lispro16suppressed
Meclizine HclMeclizine Hcl16suppressed
MupirocinMupirocin1614
Sodium Chloride0.9 % Sodium Chloride1614
Humulin R U-500 KwikpenInsulin Regular, Human15suppressed
Ondansetron OdtOndansetron15suppressed
Vitamin D2Ergocalciferol (Vitamin D2)15suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr14suppressed
CholestyramineCholestyramine (With Sugar)14suppressed
HaloperidolHaloperidol14suppressed
NitrofurantoinNitrofurantoin Macrocrystal14suppressed
Benazepril HclBenazepril Hcl13suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate13suppressed
Humalog Mix 75-25Insulin Lispro Protamin/Lispro13suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide13suppressed
SpsSodium Polystyrene Sulfon/Sorb13suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide13suppressed
Calcium AcetateCalcium Acetate12suppressed
CefuroximeCefuroxime Axetil12suppressed
Clindamycin HclClindamycin Hcl12suppressed
ClotrimazoleClotrimazole12suppressed
CombiganBrimonidine Tartrate/Timolol12suppressed
Fluticasone-VilanterolFluticasone/Vilanterol12suppressed
LacosamideLacosamide12suppressed
RestasisCyclosporine12suppressed
Risperdal ConstaRisperidone Microspheres12suppressed
TetrabenazineTetrabenazine12suppressed
Timolol MaleateTimolol Maleate12suppressed
Bisoprolol FumarateBisoprolol Fumarate11suppressed
Dicyclomine HclDicyclomine Hcl11suppressed
Fludrocortisone AcetateFludrocortisone Acetate11suppressed
Fosfomycin TromethamineFosfomycin Tromethamine11suppressed
LevocarnitineLevocarnitine11suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride11suppressed
Methylphenidate HclMethylphenidate Hcl11suppressed
Prednisolone AcetatePrednisolone Acetate11suppressed
RivastigmineRivastigmine11suppressed
Semglee (Yfgn) PenInsulin Glargine-Yfgn11suppressed
TopiramateTopiramate11suppressed

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 $23.53 · 1 records Novo Nordisk Inc Ozempic, Rybelsus 1
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

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