Healthcare provider profile · identity verified

John R Armstrong, MD

Family Practice · BANGOR, ME · NPI 1952893406

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	687	180
Levothyroxine Sodium	Levothyroxine Sodium	516	113
Pantoprazole Sodium	Pantoprazole Sodium	480	102
Lisinopril	Lisinopril	465	116
Furosemide	Furosemide	447	91
Gabapentin	Gabapentin	380	84
Eliquis	Apixaban	340	73
Metoprolol Succinate	Metoprolol Succinate	338	85
Omeprazole	Omeprazole	328	94
Amlodipine Besylate	Amlodipine Besylate	311	80
Potassium Chloride	Potassium Chloride	305	81
Metoprolol Tartrate	Metoprolol Tartrate	251	71
Tamsulosin Hcl	Tamsulosin Hcl	222	46
Albuterol Sulfate Hfa	Albuterol Sulfate	221	84
Trazodone Hcl	Trazodone Hcl	205	42
Sertraline Hcl	Sertraline Hcl	201	43
Rosuvastatin Calcium	Rosuvastatin Calcium	195	61
Losartan Potassium	Losartan Potassium	192	64
Metformin Hcl	Metformin Hcl	172	57
Finasteride	Finasteride	155	26
Escitalopram Oxalate	Escitalopram Oxalate	154	40
Jardiance	Empagliflozin	149	29
Mirtazapine	Mirtazapine	142	32
Famotidine	Famotidine	139	34
Simvastatin	Simvastatin	137	41
Duloxetine Hcl	Duloxetine Hcl	127	30
Isosorbide Mononitrate Er	Isosorbide Mononitrate	127	31
Lactulose	Lactulose	123	20
Hydrochlorothiazide	Hydrochlorothiazide	122	32
Ozempic	Semaglutide	122	25
Buspirone Hcl	Buspirone Hcl	117	29
Atenolol	Atenolol	113	26
Glipizide	Glipizide	113	36
Pregabalin	Pregabalin	108	24
Hydroxyzine Hcl	Hydroxyzine Hcl	101	34
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	99	34
Spironolactone	Spironolactone	99	26
Clopidogrel	Clopidogrel Bisulfate	95	26
Venlafaxine Hcl Er	Venlafaxine Hcl	95	26
Xarelto	Rivaroxaban	93	11
Fluticasone Propionate	Fluticasone Propionate	90	44
Tizanidine Hcl	Tizanidine Hcl	90	18
Lorazepam	Lorazepam	89	29
Prednisone	Prednisone	86	50
Trulicity	Dulaglutide	82	13
Tramadol Hcl	Tramadol Hcl	81	34
Meloxicam	Meloxicam	80	25
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	78	24
Montelukast Sodium	Montelukast Sodium	78	18
Pravastatin Sodium	Pravastatin Sodium	78	18
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	77	26
Bumetanide	Bumetanide	75	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	73	14
Levetiracetam	Levetiracetam	71	12
Myrbetriq	Mirabegron	70	13
Diclofenac Sodium	Diclofenac Sodium	69	22
Paroxetine Hcl	Paroxetine Hcl	66	12
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	65	15
Baclofen	Baclofen	64	15
Oxycodone Hcl	Oxycodone Hcl	64	19
Divalproex Sodium	Divalproex Sodium	63	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	63	17
Carvedilol	Carvedilol	61	19
Ropinirole Hcl	Ropinirole Hcl	61	13
Allopurinol	Allopurinol	59	19
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	59	17
Ondansetron Hcl	Ondansetron Hcl	56	22
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	55	12
Primidone	Primidone	55	suppressed
Sucralfate	Sucralfate	55	suppressed
Farxiga	Dapagliflozin Propanediol	50	suppressed
Breo Ellipta	Fluticasone/Vilanterol	47	11
Oxybutynin Chloride Er	Oxybutynin Chloride	47	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	46	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	46	11
Alendronate Sodium	Alendronate Sodium	45	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	45	15
Tresiba Flextouch U-100	Insulin Degludec	45	suppressed
Ibuprofen	Ibuprofen	44	suppressed
Propranolol Hcl	Propranolol Hcl	44	11
Risperidone	Risperidone	44	suppressed
Hydralazine Hcl	Hydralazine Hcl	43	13
Nystatin	Nystatin	43	31
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	42	suppressed
Lovastatin	Lovastatin	42	14
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	41	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	40	suppressed
Clonazepam	Clonazepam	40	14
Nitroglycerin	Nitroglycerin	40	21
Bupropion Xl	Bupropion Hcl	38	suppressed
Terazosin Hcl	Terazosin Hcl	38	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	36	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	36	11
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	36	25
Diltiazem Hcl	Diltiazem Hcl	35	suppressed
Incruse Ellipta	Umeclidinium Bromide	35	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	35	12
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	35	17
Glipizide Er	Glipizide	34	suppressed
Lamotrigine	Lamotrigine	34	suppressed
Methocarbamol	Methocarbamol	34	suppressed
Digoxin	Digoxin	32	suppressed
Ezetimibe	Ezetimibe	31	12
Amiodarone Hcl	Amiodarone Hcl	30	suppressed
Tresiba Flextouch U-200	Insulin Degludec	30	suppressed
Metformin Hcl Er	Metformin Hcl	29	suppressed
Topiramate	Topiramate	29	suppressed
Alprazolam	Alprazolam	28	suppressed
Chlorthalidone	Chlorthalidone	28	suppressed
Donepezil Hcl	Donepezil Hcl	28	suppressed
Enalapril Maleate	Enalapril Maleate	28	suppressed
Propranolol Hcl Er	Propranolol Hcl	28	suppressed
Buprenorphine	Buprenorphine	27	suppressed
Citalopram Hbr	Citalopram Hydrobromide	27	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	27	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	27	suppressed
Ventolin Hfa	Albuterol Sulfate	27	suppressed
Carbamazepine	Carbamazepine	26	suppressed
Novolog Flexpen	Insulin Aspart	26	suppressed
Olanzapine	Olanzapine	26	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	25	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	25	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	25	13
Valacyclovir	Valacyclovir Hcl	25	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	24	11
Doxycycline Hyclate	Doxycycline Hyclate	24	15
Fluconazole	Fluconazole	24	18
Warfarin Sodium	Warfarin Sodium	24	suppressed
Azithromycin	Azithromycin	23	17
Latanoprost	Latanoprost	23	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	23	suppressed
Valsartan	Valsartan	22	suppressed
Ketoconazole	Ketoconazole	21	suppressed
Meclizine Hcl	Meclizine Hcl	21	suppressed
Dexlansoprazole Dr	Dexlansoprazole	20	suppressed
Movantik	Naloxegol Oxalate	20	suppressed
Prazosin Hcl	Prazosin Hcl	20	suppressed
Verapamil Er	Verapamil Hcl	20	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	19	suppressed
Fenofibrate	Fenofibrate	19	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	19	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	19	12
Advair Hfa	Fluticasone Propion/Salmeterol	18	suppressed
Aripiprazole	Aripiprazole	18	suppressed
Ondansetron Odt	Ondansetron	18	suppressed
Humalog Kwikpen U-100	Insulin Lispro	17	suppressed
Nystop	Nystatin	17	suppressed
Sotalol	Sotalol Hcl	17	suppressed
Spiriva Handihaler	Tiotropium Bromide	17	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	16	suppressed
Amoxicillin	Amoxicillin	16	11
Morphine Sulfate Er	Morphine Sulfate	16	suppressed
Clonidine Hcl	Clonidine Hcl	15	suppressed
Estradiol	Estradiol	15	suppressed
Insulin Lispro	Insulin Lispro	15	suppressed
Nabumetone	Nabumetone	15	suppressed
Shingrix	Varicella-Zoster Ge/As01b/Pf	15	11
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	15	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	15	suppressed
Combigan	Brimonidine Tartrate/Timolol	14	suppressed
Dexamethasone	Dexamethasone	14	suppressed
Jantoven	Warfarin Sodium	14	suppressed
Labetalol Hcl	Labetalol Hcl	14	suppressed
Morphine Sulfate	Morphine Sulfate	14	13
Novolin N	Insulin Nph Human Isophane	14	suppressed
Nyamyc	Nystatin	14	12
Olmesartan Medoxomil	Olmesartan Medoxomil	14	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	13	13
Bethanechol Chloride	Bethanechol Chloride	13	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	13	suppressed
Bupropion Hcl Sr	Bupropion Hcl	13	suppressed
Nitroglycerin Patch	Nitroglycerin	13	suppressed
Spiriva Respimat	Tiotropium Bromide	13	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	12	suppressed
Cephalexin	Cephalexin	12	suppressed
Dexilant	Dexlansoprazole	12	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	12	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	12	suppressed
Januvia	Sitagliptin Phosphate	12	suppressed
Levofloxacin	Levofloxacin	12	suppressed
Methotrexate	Methotrexate Sodium	12	suppressed
Midodrine Hcl	Midodrine Hcl	12	suppressed
Naproxen	Naproxen	12	suppressed
Olanzapine Odt	Olanzapine	12	suppressed
Premarin	Estrogens, Conjugated	12	suppressed
Solifenacin Succinate	Solifenacin Succinate	12	suppressed
Sulindac	Sulindac	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Carbidopa-Levodopa Er	Carbidopa/Levodopa	11	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	11	suppressed
Loperamide	Loperamide Hcl	11	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	11	suppressed
Promethazine Hcl	Promethazine Hcl	11	suppressed
Rizatriptan	Rizatriptan Benzoate	11	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	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