Healthcare provider profile · identity verified

Gregory W. Halbur, M.D.

Family Practice · SIOUX CITY, IA · NPI 1780624205

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	836	221
Levothyroxine Sodium	Levothyroxine Sodium	634	157
Lisinopril	Lisinopril	473	140
Amlodipine Besylate	Amlodipine Besylate	440	128
Metoprolol Succinate	Metoprolol Succinate	418	105
Losartan Potassium	Losartan Potassium	387	108
Omeprazole	Omeprazole	349	96
Pantoprazole Sodium	Pantoprazole Sodium	343	104
Metformin Hcl	Metformin Hcl	307	82
Rosuvastatin Calcium	Rosuvastatin Calcium	307	91
Hydrochlorothiazide	Hydrochlorothiazide	296	100
Potassium Chloride	Potassium Chloride	214	62
Sertraline Hcl	Sertraline Hcl	213	57
Furosemide	Furosemide	206	54
Warfarin Sodium	Warfarin Sodium	202	29
Tamsulosin Hcl	Tamsulosin Hcl	181	56
Gabapentin	Gabapentin	167	44
Metoprolol Tartrate	Metoprolol Tartrate	165	46
Ozempic	Semaglutide	150	26
Simvastatin	Simvastatin	144	45
Carvedilol	Carvedilol	140	39
Eliquis	Apixaban	131	24
Mounjaro	Tirzepatide	128	25
Metformin Hcl Er	Metformin Hcl	126	33
Montelukast Sodium	Montelukast Sodium	123	34
Clopidogrel	Clopidogrel Bisulfate	115	31
Trazodone Hcl	Trazodone Hcl	115	29
Chlorthalidone	Chlorthalidone	110	34
Mirtazapine	Mirtazapine	110	22
Fluoxetine Hcl	Fluoxetine Hcl	106	32
Spironolactone	Spironolactone	106	32
Escitalopram Oxalate	Escitalopram Oxalate	104	26
Duloxetine Hcl	Duloxetine Hcl	102	22
Albuterol Sulfate Hfa	Albuterol Sulfate	99	29
Allopurinol	Allopurinol	93	26
Zolpidem Tartrate	Zolpidem Tartrate	88	19
Meloxicam	Meloxicam	87	25
Cefdinir	Cefdinir	85	60
Lorazepam	Lorazepam	84	26
Clonazepam	Clonazepam	82	12
Pravastatin Sodium	Pravastatin Sodium	82	32
Donepezil Hcl	Donepezil Hcl	81	19
Ezetimibe	Ezetimibe	77	21
Bupropion Xl	Bupropion Hcl	75	25
Alendronate Sodium	Alendronate Sodium	68	20
Benazepril Hcl	Benazepril Hcl	67	15
Prednisone	Prednisone	66	35
Fluticasone Propionate	Fluticasone Propionate	64	17
Glipizide	Glipizide	62	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	62	12
Januvia	Sitagliptin Phosphate	59	13
Tramadol Hcl	Tramadol Hcl	57	22
Venlafaxine Hcl Er	Venlafaxine Hcl	55	13
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	54	32
Tresiba Flextouch U-100	Insulin Degludec	54	11
Famotidine	Famotidine	51	13
Myrbetriq	Mirabegron	50	suppressed
Hydralazine Hcl	Hydralazine Hcl	49	17
Trulicity	Dulaglutide	49	suppressed
Memantine Hcl	Memantine Hcl	46	14
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	44	18
Pioglitazone Hcl	Pioglitazone Hcl	43	11
Paroxetine Hcl	Paroxetine Hcl	42	11
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	41	suppressed
Atenolol	Atenolol	39	12
Alprazolam	Alprazolam	38	12
Celecoxib	Celecoxib	38	suppressed
Amoxicillin	Amoxicillin	37	33
Finasteride	Finasteride	37	12
Oxybutynin Chloride	Oxybutynin Chloride	36	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	36	29
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	35	suppressed
Pregabalin	Pregabalin	35	suppressed
Ramipril	Ramipril	35	suppressed
Jardiance	Empagliflozin	34	11
Oxybutynin Chloride Er	Oxybutynin Chloride	34	suppressed
Farxiga	Dapagliflozin Propanediol	33	suppressed
Novolog Flexpen	Insulin Aspart	33	suppressed
Azelastine Hcl	Azelastine Hcl	32	11
Isosorbide Mononitrate Er	Isosorbide Mononitrate	31	11
Ipratropium Bromide	Ipratropium Bromide	30	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	30	suppressed
Buspirone Hcl	Buspirone Hcl	29	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	29	18
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	29	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	29	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	28	suppressed
Ventolin Hfa	Albuterol Sulfate	28	suppressed
Citalopram Hbr	Citalopram Hydrobromide	27	12
Levetiracetam	Levetiracetam	27	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	26	suppressed
Glipizide Er	Glipizide	25	11
Carbidopa-Levodopa	Carbidopa/Levodopa	24	suppressed
Glimepiride	Glimepiride	24	suppressed
Ibuprofen	Ibuprofen	24	suppressed
Nifedipine Er	Nifedipine	24	suppressed
Azithromycin	Azithromycin	23	18
Baclofen	Baclofen	23	suppressed
Colestipol Hcl	Colestipol Hcl	23	suppressed
Ondansetron Hcl	Ondansetron Hcl	23	12
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	22	suppressed
Easy Touch Alcohol Prep Pads	Alcohol Antiseptic Pads	22	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	22	suppressed
Terazosin Hcl	Terazosin Hcl	22	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	22	21
Valsartan	Valsartan	21	suppressed
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	20	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	20	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	20	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	20	suppressed
Clonidine Hcl	Clonidine Hcl	19	suppressed
Lansoprazole	Lansoprazole	19	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	18	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	18	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	18	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	18	suppressed
Gemfibrozil	Gemfibrozil	18	suppressed
Propranolol Hcl Er	Propranolol Hcl	18	suppressed
Latanoprost	Latanoprost	17	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	17	suppressed
Nitroglycerin	Nitroglycerin	17	suppressed
Ropinirole Hcl	Ropinirole Hcl	17	suppressed
Symbicort	Budesonide/Formoterol Fumarate	17	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	16	suppressed
Budesonide	Budesonide	16	suppressed
Fenofibrate	Fenofibrate	16	suppressed
Levofloxacin	Levofloxacin	16	13
Lovastatin	Lovastatin	16	suppressed
Memantine Hcl Er	Memantine Hcl	16	suppressed
Valacyclovir	Valacyclovir Hcl	16	12
Verapamil Er	Verapamil Hcl	16	suppressed
Amantadine	Amantadine Hcl	15	suppressed
Breo Ellipta	Fluticasone/Vilanterol	15	suppressed
Calcitriol	Calcitriol	15	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	15	11
Mono-Linyah	Norgestimate-Ethinyl Estradiol	15	suppressed
Shingrix	Varicella-Zoster Ge/As01b/Pf	15	11
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	15	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	14	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	14	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	14	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Vascepa	Icosapent Ethyl	14	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	13	suppressed
Fluconazole	Fluconazole	13	11
Gemtesa	Vibegron	13	suppressed
Nebivolol Hcl	Nebivolol Hcl	13	suppressed
Novolin R Flexpen	Insulin Regular, Human	13	suppressed
Nystatin	Nystatin	13	suppressed
Ondansetron Odt	Ondansetron	13	11
Primidone	Primidone	13	suppressed
Fiasp Flextouch	Insulin Aspart (Niacinamide)	12	suppressed
Incruse Ellipta	Umeclidinium Bromide	12	suppressed
Colchicine	Colchicine	11	suppressed
Diclofenac Sodium	Diclofenac Sodium	11	suppressed
Dutasteride	Dutasteride	11	suppressed
Humalog Kwikpen U-100	Insulin Lispro	11	suppressed
Livalo	Pitavastatin Calcium	11	suppressed
Quetiapine Fumarate Er	Quetiapine Fumarate	11	suppressed
Ultra-Fine Nano 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