Healthcare provider profile · identity verified

Gregory B Parranto, MD

Family Practice · LIMA, OH · NPI 1447238993

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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

Brand	Generic	Claims	Beneficiaries
Atorvastatin Calcium	Atorvastatin Calcium	873	180
Amlodipine Besylate	Amlodipine Besylate	799	186
Gabapentin	Gabapentin	651	99
Levothyroxine Sodium	Levothyroxine Sodium	367	71
Pantoprazole Sodium	Pantoprazole Sodium	352	70
Metformin Hcl	Metformin Hcl	351	73
Albuterol Sulfate Hfa	Albuterol Sulfate	338	85
Lisinopril	Lisinopril	329	73
Omeprazole	Omeprazole	315	79
Losartan Potassium	Losartan Potassium	306	79
Trazodone Hcl	Trazodone Hcl	306	51
Duloxetine Hcl	Duloxetine Hcl	294	36
Buspirone Hcl	Buspirone Hcl	288	44
Metoprolol Tartrate	Metoprolol Tartrate	264	52
Januvia	Sitagliptin Phosphate	262	39
Tamsulosin Hcl	Tamsulosin Hcl	250	44
Eliquis	Apixaban	249	31
Metoprolol Succinate	Metoprolol Succinate	245	56
Furosemide	Furosemide	243	55
Potassium Chloride	Potassium Chloride	227	43
Clopidogrel	Clopidogrel Bisulfate	226	47
Famotidine	Famotidine	193	43
Hydroxyzine Hcl	Hydroxyzine Hcl	189	39
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	188	45
Sertraline Hcl	Sertraline Hcl	187	34
Pioglitazone Hcl	Pioglitazone Hcl	175	39
Citalopram Hbr	Citalopram Hydrobromide	168	40
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	168	35
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	160	21
Meloxicam	Meloxicam	160	36
Tramadol Hcl	Tramadol Hcl	157	21
Escitalopram Oxalate	Escitalopram Oxalate	153	22
Carvedilol	Carvedilol	144	24
Jardiance	Empagliflozin	139	20
Oxybutynin Chloride Er	Oxybutynin Chloride	139	26
Tizanidine Hcl	Tizanidine Hcl	139	28
Olanzapine	Olanzapine	133	19
Trulicity	Dulaglutide	130	20
Venlafaxine Hcl Er	Venlafaxine Hcl	130	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	126	27
Ondansetron Hcl	Ondansetron Hcl	119	30
Quetiapine Fumarate	Quetiapine Fumarate	113	26
Bumetanide	Bumetanide	108	17
Levetiracetam	Levetiracetam	106	16
Spironolactone	Spironolactone	105	21
Amitriptyline Hcl	Amitriptyline Hcl	102	20
Hydralazine Hcl	Hydralazine Hcl	100	18
Ibuprofen	Ibuprofen	100	27
Ropinirole Hcl	Ropinirole Hcl	100	15
Donepezil Hcl	Donepezil Hcl	98	17
Isosorbide Mononitrate Er	Isosorbide Mononitrate	97	23
Prednisone	Prednisone	96	55
Spiriva Respimat	Tiotropium Bromide	94	19
Allopurinol	Allopurinol	93	21
Baclofen	Baclofen	92	19
Rosuvastatin Calcium	Rosuvastatin Calcium	92	17
Alendronate Sodium	Alendronate Sodium	87	16
Lorazepam	Lorazepam	87	suppressed
Tradjenta	Linagliptin	87	suppressed
Montelukast Sodium	Montelukast Sodium	84	22
Fluticasone Propionate	Fluticasone Propionate	82	26
Divalproex Sodium	Divalproex Sodium	75	14
Atenolol	Atenolol	74	20
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	73	suppressed
Aripiprazole	Aripiprazole	72	11
Celecoxib	Celecoxib	72	11
Hydrochlorothiazide	Hydrochlorothiazide	71	17
Sucralfate	Sucralfate	71	15
Ventolin Hfa	Albuterol Sulfate	71	24
Propranolol Hcl	Propranolol Hcl	69	18
Farxiga	Dapagliflozin Propanediol	67	14
Pravastatin Sodium	Pravastatin Sodium	66	14
Mirtazapine	Mirtazapine	64	14
Myrbetriq	Mirabegron	64	11
Buprenorphine-Naloxone	Buprenorphine Hcl/Naloxone Hcl	62	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	62	13
Divalproex Sodium Er	Divalproex Sodium	60	suppressed
Metformin Hcl Er	Metformin Hcl	59	15
Topiramate	Topiramate	59	suppressed
Benztropine Mesylate	Benztropine Mesylate	57	suppressed
Brilinta	Ticagrelor	57	suppressed
Pregabalin	Pregabalin	57	suppressed
Naproxen	Naproxen	54	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	53	11
Mounjaro	Tirzepatide	53	13
Zolpidem Tartrate	Zolpidem Tartrate	52	suppressed
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	51	suppressed
Bupropion Xl	Bupropion Hcl	49	12
Risperidone	Risperidone	49	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	48	suppressed
Ozempic	Semaglutide	48	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	48	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	47	suppressed
Clonazepam	Clonazepam	47	suppressed
Nystatin	Nystatin	47	24
Breo Ellipta	Fluticasone/Vilanterol	46	12
Fluoxetine Hcl	Fluoxetine Hcl	46	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	43	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	41	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	41	11
Lacosamide	Lacosamide	40	suppressed
Warfarin Sodium	Warfarin Sodium	39	suppressed
Zonisamide	Zonisamide	39	suppressed
Ezetimibe	Ezetimibe	38	suppressed
Simvastatin	Simvastatin	38	13
Glimepiride	Glimepiride	37	suppressed
Estradiol	Estradiol	36	suppressed
Xarelto	Rivaroxaban	36	12
Azithromycin	Azithromycin	35	28
Haloperidol	Haloperidol	35	suppressed
Incruse Ellipta	Umeclidinium Bromide	35	suppressed
Nitroglycerin	Nitroglycerin	35	19
Finasteride	Finasteride	34	11
Diclofenac Sodium	Diclofenac Sodium	33	12
Hydroxyzine Pamoate	Hydroxyzine Pamoate	33	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	33	28
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	32	suppressed
Oxycodone Hcl	Oxycodone Hcl	32	suppressed
Primidone	Primidone	32	suppressed
Torsemide	Torsemide	32	suppressed
Chlorthalidone	Chlorthalidone	31	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	31	suppressed
Spiriva Handihaler	Tiotropium Bromide	31	suppressed
Benazepril Hcl	Benazepril Hcl	30	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	30	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	30	suppressed
Naltrexone Hcl	Naltrexone Hcl	30	suppressed
Carbamazepine	Carbamazepine	29	suppressed
Fenofibrate	Fenofibrate	29	suppressed
Glipizide	Glipizide	28	suppressed
Solifenacin Succinate	Solifenacin Succinate	28	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	27	suppressed
Loperamide	Loperamide Hcl	26	11
Methenamine Hippurate	Methenamine Hippurate	26	suppressed
Metolazone	Metolazone	26	suppressed
Phenytoin	Phenytoin	26	suppressed
Varenicline Tartrate	Varenicline Tartrate	26	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	25	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	25	suppressed
Valproic Acid	Valproic Acid	25	suppressed
Bupropion Hcl Sr	Bupropion Hcl	24	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	24	suppressed
Nuedexta	Dextromethorphan Hbr/Quinidine	24	suppressed
Phenobarbital	Phenobarbital	24	suppressed
Roflumilast	Roflumilast	24	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	23	suppressed
Lamotrigine	Lamotrigine	23	suppressed
Meclizine Hcl	Meclizine Hcl	23	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	22	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	22	suppressed
Terbinafine Hcl	Terbinafine Hcl	22	14
Morphine Sulfate	Morphine Sulfate	21	suppressed
Amoxicillin	Amoxicillin	20	15
Diltiazem Hcl	Diltiazem Hcl	20	suppressed
Invega Sustenna	Paliperidone Palmitate	20	suppressed
Oxcarbazepine	Oxcarbazepine	20	suppressed
Ranolazine Er	Ranolazine	20	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	19	suppressed
Clonidine Hcl	Clonidine Hcl	19	suppressed
Digoxin	Digoxin	19	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	19	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	19	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	19	suppressed
Trintellix	Vortioxetine Hydrobromide	19	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	18	14
Diazepam	Diazepam	18	suppressed
Doxepin Hcl	Doxepin Hcl	18	suppressed
Enalapril Maleate	Enalapril Maleate	18	suppressed
Latanoprost	Latanoprost	18	suppressed
Memantine Hcl	Memantine Hcl	18	suppressed
Lactulose	Lactulose	17	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	17	suppressed
Techlite Pen Needle	Pen Needle, Diabetic	17	suppressed
Arnuity Ellipta	Fluticasone Furoate	16	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	16	suppressed
Humalog	Insulin Lispro	16	suppressed
Invokana	Canagliflozin	16	suppressed
Ondansetron Odt	Ondansetron	16	suppressed
Promethazine Hcl	Promethazine Hcl	16	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	15	suppressed
Clindamycin Hcl	Clindamycin Hcl	15	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	15	suppressed
Dexlansoprazole Dr	Dexlansoprazole	15	suppressed
Novolin R Flexpen	Insulin Regular, Human	15	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	15	suppressed
Dilantin	Phenytoin Sodium Extended	14	suppressed
Gemfibrozil	Gemfibrozil	14	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	14	suppressed
Megestrol Acetate	Megestrol Acetate	14	suppressed
Methadone Hcl	Methadone Hcl	14	suppressed
Acitretin	Acitretin	13	suppressed
Bethanechol Chloride	Bethanechol Chloride	13	suppressed
Cephalexin	Cephalexin	13	12
Cimetidine	Cimetidine	13	suppressed
Clobetasol Propionate	Clobetasol Propionate	13	suppressed
Dexmethylphenidate Hcl Er	Dexmethylphenidate Hcl	13	suppressed
Eszopiclone	Eszopiclone	13	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	13	suppressed
Jentadueto Xr	Linagliptin/Metformin Hcl	13	suppressed
Levemir Flexpen	Insulin Detemir	13	suppressed
Premarin	Estrogens, Conjugated	13	suppressed
Restasis	Cyclosporine	13	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	13	suppressed
Suboxone	Buprenorphine Hcl/Naloxone Hcl	13	suppressed
Valsartan	Valsartan	13	suppressed
Victoza 2-Pak	Liraglutide	13	suppressed
Enulose	Lactulose	12	suppressed
Fluphenazine Hcl	Fluphenazine Hcl	12	suppressed
Levalbuterol Tartrate Hfa	Levalbuterol Tartrate	12	suppressed
Lubiprostone	Lubiprostone	12	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	12	suppressed
Novolog Flexpen	Insulin Aspart	12	suppressed
Pentoxifylline	Pentoxifylline	12	suppressed
Rybelsus	Semaglutide	12	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	11	suppressed
Ultra-Fine Micro Pen Needle	Pen Needle, Diabetic	11	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	11	suppressed
Victoza 3-Pak	Liraglutide	11	suppressed

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.

Year	General Payments	Main payer	Explicit products	Company overlaps	Part D coverage
2025	—	—	—	—	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

Are there reasonable alternatives I should understand when we discuss treatment options?
How should I interpret the industry-payment records shown here in the context of my care?

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.

Loaded source releases

Dataset	Year	Publication	Source
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