Healthcare provider profile · identity verified

Damon E Greven, NP-C

Nurse Practitioner · GARRETT, IN · NPI 1245428366

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
Furosemide	Furosemide	332	52
Levothyroxine Sodium	Levothyroxine Sodium	251	33
Eliquis	Apixaban	239	28
Atorvastatin Calcium	Atorvastatin Calcium	218	30
Gabapentin	Gabapentin	203	36
Myrbetriq	Mirabegron	169	13
Omeprazole	Omeprazole	164	29
Amlodipine Besylate	Amlodipine Besylate	160	23
Tamsulosin Hcl	Tamsulosin Hcl	128	18
Potassium Chloride	Potassium Chloride	112	21
Metoprolol Succinate	Metoprolol Succinate	108	14
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	97	22
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	97	29
Metoprolol Tartrate	Metoprolol Tartrate	94	19
Mirtazapine	Mirtazapine	94	20
Klor-Con M20	Potassium Chloride	92	suppressed
Gemtesa	Vibegron	91	suppressed
Jardiance	Empagliflozin	88	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	88	17
Pantoprazole Sodium	Pantoprazole Sodium	77	14
Trulicity	Dulaglutide	76	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	74	suppressed
Tramadol Hcl	Tramadol Hcl	70	13
Trazodone Hcl	Trazodone Hcl	70	suppressed
Buspirone Hcl	Buspirone Hcl	69	suppressed
Spironolactone	Spironolactone	67	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	65	suppressed
Duloxetine Hcl	Duloxetine Hcl	64	suppressed
Farxiga	Dapagliflozin Propanediol	62	suppressed
Sertraline Hcl	Sertraline Hcl	59	suppressed
Bumetanide	Bumetanide	58	suppressed
Donepezil Hcl	Donepezil Hcl	58	11
Baclofen	Baclofen	57	suppressed
Famotidine	Famotidine	56	suppressed
Memantine Hcl	Memantine Hcl	56	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	56	suppressed
Clonidine Hcl	Clonidine Hcl	55	suppressed
Hydralazine Hcl	Hydralazine Hcl	55	suppressed
Lisinopril	Lisinopril	55	suppressed
Losartan Potassium	Losartan Potassium	55	suppressed
Levetiracetam	Levetiracetam	53	suppressed
Citalopram Hbr	Citalopram Hydrobromide	52	suppressed
Carvedilol	Carvedilol	51	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	49	14
Metformin Hcl	Metformin Hcl	49	12
Allopurinol	Allopurinol	48	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	43	suppressed
Metolazone	Metolazone	43	11
Budesonide	Budesonide	41	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	41	suppressed
Risperidone	Risperidone	40	suppressed
Tradjenta	Linagliptin	40	suppressed
Xarelto	Rivaroxaban	39	suppressed
Hydrochlorothiazide	Hydrochlorothiazide	38	suppressed
Meclizine Hcl	Meclizine Hcl	38	suppressed
Ondansetron Odt	Ondansetron	38	17
Nitrofurantoin	Nitrofurantoin Macrocrystal	37	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	36	21
Rezvoglar Kwikpen	Insulin Glargine-Aglr	36	11
Cephalexin	Cephalexin	35	21
Incruse Ellipta	Umeclidinium Bromide	35	suppressed
Diclofenac Sodium	Diclofenac Sodium	34	13
Prednisone	Prednisone	34	16
Clopidogrel	Clopidogrel Bisulfate	31	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	30	22
Glyxambi	Empagliflozin/Linagliptin	30	suppressed
Diltiazem Hcl	Diltiazem Hcl	29	suppressed
Ibuprofen	Ibuprofen	29	suppressed
Nystatin	Nystatin	29	20
Pregabalin	Pregabalin	29	suppressed
Simvastatin	Simvastatin	28	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	27	suppressed
Valsartan	Valsartan	27	suppressed
Acetic Acid	Acetic Acid	26	suppressed
Finasteride	Finasteride	26	suppressed
Primidone	Primidone	25	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	25	18
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	24	suppressed
Insulin Lispro	Insulin Lispro	24	suppressed
Loperamide	Loperamide Hcl	24	14
Prazosin Hcl	Prazosin Hcl	24	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	23	suppressed
Janumet Xr	Sitagliptin Phos/Metformin Hcl	23	suppressed
Alendronate Sodium	Alendronate Sodium	22	suppressed
Jantoven	Warfarin Sodium	22	suppressed
Meloxicam	Meloxicam	22	suppressed
Ondansetron Hcl	Ondansetron Hcl	22	14
Atenolol	Atenolol	21	suppressed
Insulin Aspart Prot Mix 70-30	Insulin Aspart Prot/Insuln Asp	21	suppressed
Latanoprost	Latanoprost	20	suppressed
Acyclovir	Acyclovir	19	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	19	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	19	suppressed
Methocarbamol	Methocarbamol	19	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	19	14
Aripiprazole	Aripiprazole	18	suppressed
Dapagliflozin	Dapagliflozin Propanediol	18	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	18	suppressed
Lorazepam	Lorazepam	18	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	17	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	17	suppressed
Carbamazepine	Carbamazepine	16	suppressed
Midodrine Hcl	Midodrine Hcl	16	suppressed
Montelukast Sodium	Montelukast Sodium	16	suppressed
Renvela	Sevelamer Carbonate	16	suppressed
Alprazolam	Alprazolam	15	suppressed
Rivastigmine	Rivastigmine Tartrate	15	suppressed
Ropinirole Hcl	Ropinirole Hcl	15	suppressed
Digoxin	Digoxin	14	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	14	suppressed
Lansoprazole	Lansoprazole	14	suppressed
Metformin Hcl Er	Metformin Hcl	14	suppressed
Mirabegron Er	Mirabegron	14	suppressed
Ozempic	Semaglutide	14	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	14	suppressed
Propranolol Hcl	Propranolol Hcl	14	suppressed
Sodium Chloride	0.9 % Sodium Chloride	14	suppressed
Trintellix	Vortioxetine Hydrobromide	14	suppressed
Dexamethasone	Dexamethasone	13	13
Metoclopramide Hcl	Metoclopramide Hcl	13	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	13	suppressed
Fluconazole	Fluconazole	12	suppressed
Glipizide	Glipizide	12	suppressed
Memantine Hcl Er	Memantine Hcl	12	suppressed
Rexulti	Brexpiprazole	12	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	12	suppressed
Tramadol Hcl Er	Tramadol Hcl	12	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	11	suppressed
Enulose	Lactulose	11	suppressed
Levofloxacin	Levofloxacin	11	suppressed
Xifaxan	Rifaximin	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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