Healthcare provider profile · identity verified

Ivory D Drendel, MD

Family Practice · KALISPELL, MT · NPI 1194984039

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	547	158
Levothyroxine Sodium	Levothyroxine Sodium	514	125
Losartan Potassium	Losartan Potassium	431	118
Amlodipine Besylate	Amlodipine Besylate	315	95
Omeprazole	Omeprazole	285	72
Gabapentin	Gabapentin	246	65
Lisinopril	Lisinopril	228	70
Hydrochlorothiazide	Hydrochlorothiazide	205	53
Simvastatin	Simvastatin	180	51
Furosemide	Furosemide	162	36
Metoprolol Succinate	Metoprolol Succinate	150	43
Zolpidem Tartrate	Zolpidem Tartrate	149	28
Meloxicam	Meloxicam	145	52
Duloxetine Hcl	Duloxetine Hcl	143	39
Trazodone Hcl	Trazodone Hcl	142	40
Rosuvastatin Calcium	Rosuvastatin Calcium	133	40
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	125	45
Metformin Hcl	Metformin Hcl	124	30
Potassium Chloride	Potassium Chloride	118	28
Lorazepam	Lorazepam	114	26
Citalopram Hbr	Citalopram Hydrobromide	110	30
Metformin Hcl Er	Metformin Hcl	96	20
Fluoxetine Hcl	Fluoxetine Hcl	94	24
Alendronate Sodium	Alendronate Sodium	93	23
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	92	23
Pantoprazole Sodium	Pantoprazole Sodium	90	24
Tramadol Hcl	Tramadol Hcl	90	28
Eliquis	Apixaban	87	14
Montelukast Sodium	Montelukast Sodium	87	18
Propranolol Hcl	Propranolol Hcl	85	15
Albuterol Sulfate Hfa	Albuterol Sulfate	83	41
Bupropion Xl	Bupropion Hcl	83	22
Tamsulosin Hcl	Tamsulosin Hcl	83	18
Metoprolol Tartrate	Metoprolol Tartrate	79	19
Carvedilol	Carvedilol	77	21
Pregabalin	Pregabalin	76	19
Escitalopram Oxalate	Escitalopram Oxalate	75	17
Pravastatin Sodium	Pravastatin Sodium	71	20
Allopurinol	Allopurinol	70	16
Synthroid	Levothyroxine Sodium	69	19
Mirtazapine	Mirtazapine	67	13
Sertraline Hcl	Sertraline Hcl	63	19
Acyclovir	Acyclovir	62	17
Ezetimibe	Ezetimibe	62	19
Memantine Hcl	Memantine Hcl	55	suppressed
Temazepam	Temazepam	52	suppressed
Valacyclovir	Valacyclovir Hcl	52	16
Venlafaxine Hcl Er	Venlafaxine Hcl	52	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	50	suppressed
Methocarbamol	Methocarbamol	49	suppressed
Atenolol	Atenolol	45	13
Spironolactone	Spironolactone	44	suppressed
Glipizide	Glipizide	42	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	42	12
Paroxetine Hcl	Paroxetine Hcl	42	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	42	suppressed
Alprazolam	Alprazolam	40	13
Glimepiride	Glimepiride	40	suppressed
Oxycodone Hcl	Oxycodone Hcl	40	16
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	39	15
Clonazepam	Clonazepam	38	suppressed
Prednisone	Prednisone	36	17
Warfarin Sodium	Warfarin Sodium	36	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	34	suppressed
Celecoxib	Celecoxib	32	12
Buspirone Hcl	Buspirone Hcl	31	suppressed
Estradiol	Estradiol	31	16
Fluticasone Propionate	Fluticasone Propionate	31	suppressed
Ozempic	Semaglutide	31	suppressed
Tizanidine Hcl	Tizanidine Hcl	31	suppressed
Myrbetriq	Mirabegron	30	suppressed
Methenamine Hippurate	Methenamine Hippurate	29	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	29	11
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	29	11
Donepezil Hcl	Donepezil Hcl	28	suppressed
Jardiance	Empagliflozin	28	suppressed
Prazosin Hcl	Prazosin Hcl	28	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	27	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	27	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	27	suppressed
Sucralfate	Sucralfate	27	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	27	16
Ventolin Hfa	Albuterol Sulfate	27	suppressed
Chlorthalidone	Chlorthalidone	26	suppressed
Clopidogrel	Clopidogrel Bisulfate	26	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	26	11
Valsartan	Valsartan	24	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	23	suppressed
Lamotrigine	Lamotrigine	23	suppressed
Lovastatin	Lovastatin	23	suppressed
Ondansetron Hcl	Ondansetron Hcl	23	suppressed
Raloxifene Hcl	Raloxifene Hcl	23	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	22	suppressed
Famotidine	Famotidine	22	suppressed
Januvia	Sitagliptin Phosphate	19	suppressed
Cephalexin	Cephalexin	18	12
Glipizide Er	Glipizide	18	suppressed
Midodrine Hcl	Midodrine Hcl	18	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	18	16
Topiramate	Topiramate	18	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	18	suppressed
Baclofen	Baclofen	17	suppressed
Ibandronate Sodium	Ibandronate Sodium	17	suppressed
Ketoconazole	Ketoconazole	17	suppressed
Levetiracetam	Levetiracetam	17	suppressed
Olanzapine	Olanzapine	17	suppressed
Ondansetron Odt	Ondansetron	17	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	16	suppressed
Ropinirole Hcl	Ropinirole Hcl	16	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	16	suppressed
Oxcarbazepine	Oxcarbazepine	15	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Diazepam	Diazepam	13	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	13	suppressed
Risperidone	Risperidone	13	suppressed
Torsemide	Torsemide	13	suppressed
Zaleplon	Zaleplon	13	suppressed
Zonisamide	Zonisamide	13	suppressed
Breo Ellipta	Fluticasone/Vilanterol	12	suppressed
Divalproex Sodium	Divalproex Sodium	12	suppressed
Epinephrine	Epinephrine	12	suppressed
Farxiga	Dapagliflozin Propanediol	12	suppressed
Fentanyl	Fentanyl	12	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	12	suppressed
Meclizine Hcl	Meclizine Hcl	12	suppressed
Mupirocin	Mupirocin	12	12
Arnuity Ellipta	Fluticasone Furoate	11	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	11	suppressed
Digoxin	Digoxin	11	suppressed
Finasteride	Finasteride	11	suppressed
Hydralazine Hcl	Hydralazine Hcl	11	suppressed
Levemir Flexpen	Insulin Detemir	11	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	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