Healthcare provider profile · identity verified

Donald E Mcmahon, MD

Family Practice · INDIANAPOLIS, IN · NPI 1679555718

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	339	109
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	266	43
Amlodipine Besylate	Amlodipine Besylate	250	79
Lisinopril	Lisinopril	217	75
Rosuvastatin Calcium	Rosuvastatin Calcium	207	61
Omeprazole	Omeprazole	166	55
Gabapentin	Gabapentin	152	47
Albuterol Sulfate Hfa	Albuterol Sulfate	137	47
Losartan Potassium	Losartan Potassium	132	39
Metformin Hcl	Metformin Hcl	121	40
Glimepiride	Glimepiride	117	39
Pantoprazole Sodium	Pantoprazole Sodium	108	34
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	104	37
Cephalexin	Cephalexin	103	79
Clonazepam	Clonazepam	98	17
Metoprolol Succinate	Metoprolol Succinate	94	27
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	91	23
Tizanidine Hcl	Tizanidine Hcl	90	25
Levothyroxine Sodium	Levothyroxine Sodium	85	30
Mounjaro	Tirzepatide	84	19
Lorazepam	Lorazepam	83	20
Tramadol Hcl	Tramadol Hcl	80	15
Clopidogrel	Clopidogrel Bisulfate	75	22
Escitalopram Oxalate	Escitalopram Oxalate	75	24
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	73	23
Sertraline Hcl	Sertraline Hcl	72	19
Metoprolol Tartrate	Metoprolol Tartrate	71	25
Jardiance	Empagliflozin	70	17
Metformin Hcl Er	Metformin Hcl	70	24
Alprazolam	Alprazolam	69	13
Celecoxib	Celecoxib	65	24
Ondansetron Odt	Ondansetron	57	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	57	13
Carvedilol	Carvedilol	55	17
Furosemide	Furosemide	55	22
Diazepam	Diazepam	54	12
Pravastatin Sodium	Pravastatin Sodium	54	15
Trazodone Hcl	Trazodone Hcl	54	19
Duloxetine Hcl	Duloxetine Hcl	53	17
Ozempic	Semaglutide	53	14
Hydrochlorothiazide	Hydrochlorothiazide	51	15
Allopurinol	Allopurinol	50	16
Fluticasone Propionate	Fluticasone Propionate	49	20
Bupropion Hcl Sr	Bupropion Hcl	48	14
Citalopram Hbr	Citalopram Hydrobromide	44	11
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	44	14
Eliquis	Apixaban	44	11
Potassium Chloride	Potassium Chloride	42	16
Zolpidem Tartrate	Zolpidem Tartrate	41	suppressed
Simvastatin	Simvastatin	39	13
Oxycodone Hcl	Oxycodone Hcl	38	suppressed
Prednisone	Prednisone	37	31
Azithromycin	Azithromycin	36	28
Risperidone	Risperidone	35	13
Donepezil Hcl	Donepezil Hcl	34	suppressed
Tamsulosin Hcl	Tamsulosin Hcl	34	16
Doxycycline Hyclate	Doxycycline Hyclate	33	20
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	33	22
Alendronate Sodium	Alendronate Sodium	32	suppressed
Clobetasol Propionate	Clobetasol Propionate	31	20
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	31	13
Breo Ellipta	Fluticasone/Vilanterol	29	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	29	suppressed
Famotidine	Famotidine	28	11
Mirtazapine	Mirtazapine	28	suppressed
Propranolol Hcl Er	Propranolol Hcl	28	suppressed
Buspirone Hcl	Buspirone Hcl	27	11
Fluoxetine Hcl	Fluoxetine Hcl	27	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	26	suppressed
Montelukast Sodium	Montelukast Sodium	26	12
Synthroid	Levothyroxine Sodium	26	suppressed
Finasteride	Finasteride	25	suppressed
Memantine Hcl	Memantine Hcl	25	suppressed
Oxycontin	Oxycodone Hcl	25	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	24	12
Spironolactone	Spironolactone	24	suppressed
Ezetimibe	Ezetimibe	23	suppressed
Ropinirole Hcl	Ropinirole Hcl	23	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	22	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	22	suppressed
Pregabalin	Pregabalin	22	suppressed
Atenolol	Atenolol	21	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	21	suppressed
Fentanyl	Fentanyl	21	suppressed
Meloxicam	Meloxicam	21	suppressed
Methylprednisolone	Methylprednisolone	21	20
Oxybutynin Chloride	Oxybutynin Chloride	21	suppressed
Promethazine Hcl	Promethazine Hcl	21	suppressed
Temazepam	Temazepam	21	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	20	suppressed
Ondansetron Hcl	Ondansetron Hcl	20	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	19	suppressed
Diclofenac Sodium	Diclofenac Sodium	19	11
Nortriptyline Hcl	Nortriptyline Hcl	19	suppressed
Nystatin	Nystatin	19	suppressed
Meclizine Hcl	Meclizine Hcl	18	suppressed
Topiramate	Topiramate	18	suppressed
Morphine Sulfate Er	Morphine Sulfate	17	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	17	suppressed
Warfarin Sodium	Warfarin Sodium	17	suppressed
Clonidine Hcl	Clonidine Hcl	16	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	16	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	16	suppressed
Farxiga	Dapagliflozin Propanediol	16	suppressed
Fluconazole	Fluconazole	16	13
Trintellix	Vortioxetine Hydrobromide	16	suppressed
Trulicity	Dulaglutide	16	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	15	suppressed
Bupropion Xl	Bupropion Hcl	14	suppressed
Cholestyramine	Cholestyramine (With Sugar)	14	suppressed
Glipizide	Glipizide	14	suppressed
Glipizide Er	Glipizide	14	suppressed
Fluocinonide	Fluocinonide	13	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	13	suppressed
Hydralazine Hcl	Hydralazine Hcl	13	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	13	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	13	suppressed
Relistor	Methylnaltrexone Bromide	13	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	12	suppressed
Emgality Pen	Galcanezumab-Gnlm	12	suppressed
Nitroglycerin	Nitroglycerin	12	suppressed
Scopolamine	Scopolamine	12	suppressed
Verapamil Er	Verapamil Hcl	12	suppressed
Amoxicillin	Amoxicillin	11	suppressed
Baclofen	Baclofen	11	suppressed
Benazepril Hcl	Benazepril Hcl	11	suppressed
Dexlansoprazole Dr	Dexlansoprazole	11	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	11	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	11	suppressed
Propranolol Hcl	Propranolol Hcl	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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