Healthcare provider profile · identity verified

Greg Larry Perkins, MD

Family Practice · CARROLL, IA · NPI 1164413605

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	866	195
Amlodipine Besylate	Amlodipine Besylate	668	162
Levothyroxine Sodium	Levothyroxine Sodium	667	122
Metoprolol Succinate	Metoprolol Succinate	643	140
Omeprazole	Omeprazole	536	124
Furosemide	Furosemide	487	97
Lisinopril	Lisinopril	419	100
Eliquis	Apixaban	411	71
Losartan Potassium	Losartan Potassium	373	85
Rosuvastatin Calcium	Rosuvastatin Calcium	310	74
Potassium Chloride	Potassium Chloride	298	63
Trazodone Hcl	Trazodone Hcl	297	50
Simvastatin	Simvastatin	288	60
Metoprolol Tartrate	Metoprolol Tartrate	269	59
Sertraline Hcl	Sertraline Hcl	260	48
Tamsulosin Hcl	Tamsulosin Hcl	244	64
Pantoprazole Sodium	Pantoprazole Sodium	241	53
Carvedilol	Carvedilol	231	55
Clopidogrel	Clopidogrel Bisulfate	217	42
Gabapentin	Gabapentin	217	50
Ozempic	Semaglutide	196	31
Atenolol	Atenolol	179	37
Metformin Hcl	Metformin Hcl	174	38
Allopurinol	Allopurinol	165	34
Montelukast Sodium	Montelukast Sodium	153	36
Hydrochlorothiazide	Hydrochlorothiazide	152	41
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	152	60
Tramadol Hcl	Tramadol Hcl	148	35
Fluoxetine Hcl	Fluoxetine Hcl	131	21
Valsartan	Valsartan	123	24
Klor-Con M20	Potassium Chloride	118	17
Bumetanide	Bumetanide	116	23
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	109	22
Mounjaro	Tirzepatide	105	19
Duloxetine Hcl	Duloxetine Hcl	102	26
Pravastatin Sodium	Pravastatin Sodium	99	24
Famotidine	Famotidine	97	24
Citalopram Hbr	Citalopram Hydrobromide	95	18
Escitalopram Oxalate	Escitalopram Oxalate	94	23
Metformin Hcl Er	Metformin Hcl	90	16
Glipizide	Glipizide	89	19
Finasteride	Finasteride	85	23
Clonazepam	Clonazepam	84	25
Meloxicam	Meloxicam	82	19
Irbesartan	Irbesartan	80	14
Prednisone	Prednisone	80	33
Albuterol Sulfate Hfa	Albuterol Sulfate	78	36
Spironolactone	Spironolactone	78	18
Warfarin Sodium	Warfarin Sodium	76	15
Glimepiride	Glimepiride	75	19
Levetiracetam	Levetiracetam	71	suppressed
Lorazepam	Lorazepam	68	23
Mirtazapine	Mirtazapine	68	suppressed
Xarelto	Rivaroxaban	67	suppressed
Benazepril Hcl	Benazepril Hcl	64	16
Ropinirole Hcl	Ropinirole Hcl	62	11
Celecoxib	Celecoxib	61	11
Fluticasone Propionate	Fluticasone Propionate	61	22
Venlafaxine Hcl Er	Venlafaxine Hcl	57	14
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	55	55
Alprazolam	Alprazolam	55	15
Doxycycline Hyclate	Doxycycline Hyclate	54	49
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	54	suppressed
Ibuprofen	Ibuprofen	53	suppressed
Chlorthalidone	Chlorthalidone	52	15
Ventolin Hfa	Albuterol Sulfate	52	14
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	50	18
Amiodarone Hcl	Amiodarone Hcl	49	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	49	41
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	49	15
Isosorbide Mononitrate Er	Isosorbide Mononitrate	49	suppressed
Alendronate Sodium	Alendronate Sodium	47	suppressed
Novolog Flexpen	Insulin Aspart	47	suppressed
Ezetimibe	Ezetimibe	46	12
Glycopyrrolate	Glycopyrrolate	46	suppressed
Bupropion Xl	Bupropion Hcl	45	suppressed
Cephalexin	Cephalexin	45	34
Nitroglycerin	Nitroglycerin	44	32
Jardiance	Empagliflozin	43	suppressed
Primidone	Primidone	43	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	43	22
Fluocinonide	Fluocinonide	42	17
Ciprofloxacin Hcl	Ciprofloxacin Hcl	41	34
Quetiapine Fumarate	Quetiapine Fumarate	41	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	38	suppressed
Naproxen	Naproxen	38	17
Nortriptyline Hcl	Nortriptyline Hcl	37	suppressed
Diclofenac Sodium	Diclofenac Sodium	36	12
Hydralazine Hcl	Hydralazine Hcl	36	suppressed
Ondansetron Odt	Ondansetron	36	17
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	36	suppressed
Pregabalin	Pregabalin	35	suppressed
Myrbetriq	Mirabegron	34	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	34	suppressed
Nebivolol Hcl	Nebivolol Hcl	33	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	33	20
Fenofibrate	Fenofibrate Nanocrystallized	31	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	31	11
Paroxetine Hcl	Paroxetine Hcl	31	suppressed
Synthroid	Levothyroxine Sodium	31	suppressed
Tizanidine Hcl	Tizanidine Hcl	31	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	30	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	30	22
Trulicity	Dulaglutide	30	suppressed
Baclofen	Baclofen	29	suppressed
Fluconazole	Fluconazole	29	17
Humalog Kwikpen U-100	Insulin Lispro	29	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	29	suppressed
Terbinafine Hcl	Terbinafine Hcl	29	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	29	suppressed
Xifaxan	Rifaximin	29	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	28	suppressed
Minocycline Hcl	Minocycline Hcl	28	suppressed
Mupirocin	Mupirocin	28	22
Pioglitazone Hcl	Pioglitazone Hcl	28	suppressed
Buspirone Hcl	Buspirone Hcl	26	suppressed
Fentanyl	Fentanyl	26	suppressed
Clonidine Hcl	Clonidine Hcl	25	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	25	12
Lantus	Insulin Glargine,hum.Rec.Anlog	25	suppressed
Terazosin Hcl	Terazosin Hcl	25	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	24	suppressed
Amoxicillin	Amoxicillin	24	16
Digoxin	Digoxin	23	suppressed
Farxiga	Dapagliflozin Propanediol	23	suppressed
Oxycodone Hcl	Oxycodone Hcl	23	15
Amitriptyline Hcl	Amitriptyline Hcl	22	suppressed
Anastrozole	Anastrozole	22	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	22	suppressed
Ketoconazole	Ketoconazole	22	11
Shingrix	Varicella-Zoster Ge/As01b/Pf	22	17
Tolterodine Tartrate	Tolterodine Tartrate	21	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	20	suppressed
Donepezil Hcl	Donepezil Hcl	20	suppressed
Doxepin Hcl	Doxepin Hcl	20	suppressed
Ulticare Pen Needle	Pen Needle, Diabetic	20	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	19	suppressed
Lamotrigine	Lamotrigine	19	suppressed
Penicillin V Potassium	Penicillin V Potassium	19	suppressed
Topiramate	Topiramate	19	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	18	suppressed
Humalog	Insulin Lispro	18	suppressed
Jantoven	Warfarin Sodium	18	suppressed
Nifedipine Er	Nifedipine	18	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Valacyclovir	Valacyclovir Hcl	18	13
Memantine Hcl	Memantine Hcl	17	suppressed
Propranolol Hcl	Propranolol Hcl	17	suppressed
Arnuity Ellipta	Fluticasone Furoate	16	suppressed
Carbamazepine	Carbamazepine	16	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	16	12
Enalapril Maleate	Enalapril Maleate	16	suppressed
Flecainide Acetate	Flecainide Acetate	16	suppressed
Levemir Flexpen	Insulin Detemir	16	suppressed
Linzess	Linaclotide	16	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	16	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	15	suppressed
Estradiol	Estradiol	15	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	15	15
Risperidone	Risperidone	15	suppressed
Sucralfate	Sucralfate	15	suppressed
Fenofibrate	Fenofibrate	14	suppressed
Gemfibrozil	Gemfibrozil	14	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	14	suppressed
Ultra-Fine Micro Pen Needle	Pen Needle, Diabetic	14	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	13	suppressed
Bupropion Hcl Sr	Bupropion Hcl	13	suppressed
Cefadroxil	Cefadroxil	13	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	13	suppressed
Humalog Kwikpen U-200	Insulin Lispro	13	suppressed
Levofloxacin	Levofloxacin	13	suppressed
Novolog	Insulin Aspart	13	suppressed
Singulair	Montelukast Sodium	13	suppressed
Solifenacin Succinate	Solifenacin Succinate	13	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	13	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	12	suppressed
Diltiazem Hcl	Diltiazem Hcl	12	suppressed
Enulose	Lactulose	12	suppressed
Glipizide Er	Glipizide	12	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	12	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	12	suppressed
Morphine Sulfate Er	Morphine Sulfate	12	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	12	suppressed
Nystatin	Nystatin	12	suppressed
Temazepam	Temazepam	12	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	11	suppressed
Depakote	Divalproex Sodium	11	suppressed
Divalproex Sodium	Divalproex Sodium	11	suppressed
Lansoprazole	Lansoprazole	11	suppressed
Propranolol Hcl Er	Propranolol Hcl	11	suppressed
Pyridostigmine Bromide	Pyridostigmine Bromide	11	suppressed
Rivastigmine	Rivastigmine	11	suppressed
Sure Comfort Pen Needle	Pen Needle, Diabetic	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	11	suppressed
Testosterone Cypionate	Testosterone Cypionate	11	suppressed
Tresiba Flextouch U-100	Insulin Degludec	11	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	11	suppressed
Ultra-Fine Original Pen Needle	Pen Needle, Diabetic	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