Healthcare provider profile · identity verified

Michael L Hattan, MD

Family Practice · SOUTH SIOUX CITY, NE · NPI 1124093232

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	390	135
Levothyroxine Sodium	Levothyroxine Sodium	349	104
Metoprolol Succinate	Metoprolol Succinate	257	81
Omeprazole	Omeprazole	233	79
Amlodipine Besylate	Amlodipine Besylate	222	66
Lisinopril	Lisinopril	192	61
Gabapentin	Gabapentin	166	40
Hydrochlorothiazide	Hydrochlorothiazide	159	51
Metformin Hcl	Metformin Hcl	152	60
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	151	45
Simvastatin	Simvastatin	136	43
Metoprolol Tartrate	Metoprolol Tartrate	133	43
Pantoprazole Sodium	Pantoprazole Sodium	133	40
Furosemide	Furosemide	128	38
Tamsulosin Hcl	Tamsulosin Hcl	126	35
Alprazolam	Alprazolam	119	31
Rosuvastatin Calcium	Rosuvastatin Calcium	111	40
Tramadol Hcl	Tramadol Hcl	108	37
Allopurinol	Allopurinol	106	34
Glimepiride	Glimepiride	93	32
Citalopram Hbr	Citalopram Hydrobromide	90	26
Escitalopram Oxalate	Escitalopram Oxalate	88	20
Albuterol Sulfate Hfa	Albuterol Sulfate	83	27
Eliquis	Apixaban	83	17
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	82	33
Losartan Potassium	Losartan Potassium	78	28
Trazodone Hcl	Trazodone Hcl	75	20
Lorazepam	Lorazepam	67	21
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	64	20
Diclofenac Sodium	Diclofenac Sodium	62	25
Warfarin Sodium	Warfarin Sodium	59	20
Zolpidem Tartrate	Zolpidem Tartrate	58	14
Alendronate Sodium	Alendronate Sodium	52	18
Atenolol	Atenolol	50	11
Farxiga	Dapagliflozin Propanediol	47	16
Bupropion Xl	Bupropion Hcl	45	suppressed
Duloxetine Hcl	Duloxetine Hcl	45	12
Ropinirole Hcl	Ropinirole Hcl	45	12
Risperidone	Risperidone	44	suppressed
Prednisone	Prednisone	43	32
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	42	33
Pravastatin Sodium	Pravastatin Sodium	41	suppressed
Hydralazine Hcl	Hydralazine Hcl	40	11
Oxycodone Hcl	Oxycodone Hcl	40	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	39	31
Xarelto	Rivaroxaban	39	suppressed
Carvedilol	Carvedilol	37	13
Clopidogrel	Clopidogrel Bisulfate	37	suppressed
Solifenacin Succinate	Solifenacin Succinate	37	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	36	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	33	11
Memantine Hcl	Memantine Hcl	33	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	33	suppressed
Metformin Hcl Er	Metformin Hcl	31	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	31	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	29	suppressed
Donepezil Hcl	Donepezil Hcl	29	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	28	14
Benazepril Hcl	Benazepril Hcl	27	suppressed
Clonidine Hcl	Clonidine Hcl	27	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	27	suppressed
Glipizide	Glipizide	27	suppressed
Ozempic	Semaglutide	27	suppressed
Azithromycin	Azithromycin	26	24
Baclofen	Baclofen	26	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	26	suppressed
Diazepam	Diazepam	26	suppressed
Estradiol	Estradiol	26	suppressed
Finasteride	Finasteride	26	suppressed
Methylprednisolone	Methylprednisolone	26	24
Montelukast Sodium	Montelukast Sodium	26	suppressed
Potassium Chloride	Potassium Chloride	26	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	25	suppressed
Famotidine	Famotidine	24	suppressed
Sertraline Hcl	Sertraline Hcl	24	suppressed
Ezetimibe	Ezetimibe	23	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	23	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	23	suppressed
Clonazepam	Clonazepam	22	suppressed
Fluticasone Propionate	Fluticasone Propionate	22	suppressed
Jardiance	Empagliflozin	22	11
Mounjaro	Tirzepatide	22	suppressed
Irbesartan	Irbesartan	21	suppressed
Levetiracetam	Levetiracetam	21	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Cefdinir	Cefdinir	20	19
Januvia	Sitagliptin Phosphate	20	suppressed
Morphine Sulfate Er	Morphine Sulfate	20	suppressed
Olanzapine	Olanzapine	20	suppressed
Fluconazole	Fluconazole	19	12
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	19	suppressed
Minocycline Hcl	Minocycline Hcl	19	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	19	suppressed
Meloxicam	Meloxicam	18	suppressed
Mirtazapine	Mirtazapine	18	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	18	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	17	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Spironolactone	Spironolactone	17	suppressed
Fenofibrate	Fenofibrate	16	suppressed
Ibuprofen	Ibuprofen	16	suppressed
Meclizine Hcl	Meclizine Hcl	16	suppressed
Verapamil Sr	Verapamil Hcl	16	suppressed
Methadone Hcl	Methadone Hcl	15	suppressed
Chlorthalidone	Chlorthalidone	14	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	14	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	14	suppressed
Ramipril	Ramipril	14	suppressed
Terbinafine Hcl	Terbinafine Hcl	14	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	13	suppressed
Aripiprazole	Aripiprazole	13	suppressed
Breo Ellipta	Fluticasone/Vilanterol	13	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	13	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	13	suppressed
Methotrexate	Methotrexate Sodium	13	suppressed
Ondansetron Odt	Ondansetron	13	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	13	suppressed
Valsartan	Valsartan	13	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	13	suppressed
Atomoxetine Hcl	Atomoxetine Hcl	12	suppressed
Benztropine Mesylate	Benztropine Mesylate	12	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	12	suppressed
Pregabalin	Pregabalin	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Ventolin Hfa	Albuterol Sulfate	12	suppressed
Atropine Sulfate	Atropine Sulfate	11	suppressed
Bumetanide	Bumetanide	11	suppressed
Cephalexin	Cephalexin	11	suppressed
Febuxostat	Febuxostat	11	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	11	suppressed
Tizanidine Hcl	Tizanidine Hcl	11	suppressed
Topiramate	Topiramate	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

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