Healthcare provider profile · identity verified

John L Patten, DO

Family Practice · HAMPDEN, ME · NPI 1669577938

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

BrandGenericClaimsBeneficiaries
Atorvastatin CalciumAtorvastatin Calcium19846
LisinoprilLisinopril18046
Levothyroxine SodiumLevothyroxine Sodium15938
Albuterol Sulfate HfaAlbuterol Sulfate13435
Amlodipine BesylateAmlodipine Besylate13338
OmeprazoleOmeprazole12838
Pantoprazole SodiumPantoprazole Sodium12837
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen11619
Metoprolol SuccinateMetoprolol Succinate10929
Rosuvastatin CalciumRosuvastatin Calcium10627
Metformin HclMetformin Hcl9920
GabapentinGabapentin9428
Oxycodone HclOxycodone Hcl88suppressed
HydrochlorothiazideHydrochlorothiazide8322
OzempicSemaglutide8113
EliquisApixaban8021
Cyclobenzaprine HclCyclobenzaprine Hcl7218
Tramadol HclTramadol Hcl7115
Losartan PotassiumLosartan Potassium6217
SimvastatinSimvastatin6113
Sertraline HclSertraline Hcl6016
FamotidineFamotidine5914
Tamsulosin HclTamsulosin Hcl5918
FurosemideFurosemide5719
Duloxetine HclDuloxetine Hcl5516
Escitalopram OxalateEscitalopram Oxalate53suppressed
PregabalinPregabalin51suppressed
ClonazepamClonazepam50suppressed
Trazodone HclTrazodone Hcl4812
FinasterideFinasteride47suppressed
Methylphenidate HclMethylphenidate Hcl45suppressed
Metoprolol TartrateMetoprolol Tartrate4515
PrednisonePrednisone4526
Montelukast SodiumMontelukast Sodium42suppressed
TrulicityDulaglutide41suppressed
Oxybutynin Chloride ErOxybutynin Chloride38suppressed
ClopidogrelClopidogrel Bisulfate3711
JardianceEmpagliflozin3511
MirtazapineMirtazapine35suppressed
DiazepamDiazepam33suppressed
JanuviaSitagliptin Phosphate33suppressed
Tresiba Flextouch U-100Insulin Degludec33suppressed
AtenololAtenolol32suppressed
Propranolol HclPropranolol Hcl32suppressed
Doxazosin MesylateDoxazosin Mesylate31suppressed
Bupropion XlBupropion Hcl30suppressed
Hydroxyzine PamoateHydroxyzine Pamoate30suppressed
Breo ElliptaFluticasone/Vilanterol29suppressed
Zolpidem TartrateZolpidem Tartrate29suppressed
AllopurinolAllopurinol28suppressed
BaclofenBaclofen2813
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine27suppressed
CarvedilolCarvedilol24suppressed
Citalopram HbrCitalopram Hydrobromide24suppressed
Clonidine HclClonidine Hcl24suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium24suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog22suppressed
Enalapril MaleateEnalapril Maleate22suppressed
NystatinNystatin2211
Potassium ChloridePotassium Chloride22suppressed
FenofibrateFenofibrate Nanocrystallized21suppressed
Fluticasone PropionateFluticasone Propionate2111
GlipizideGlipizide21suppressed
IbuprofenIbuprofen21suppressed
Metformin Hcl ErMetformin Hcl21suppressed
Sumatriptan SuccinateSumatriptan Succinate21suppressed
CelecoxibCelecoxib20suppressed
Glipizide ErGlipizide20suppressed
Pravastatin SodiumPravastatin Sodium20suppressed
Ropinirole HclRopinirole Hcl20suppressed
Warfarin SodiumWarfarin Sodium20suppressed
Hydroxyzine HclHydroxyzine Hcl19suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1915
ValsartanValsartan19suppressed
FluconazoleFluconazole18suppressed
LansoprazoleLansoprazole18suppressed
NitroglycerinNitroglycerin1814
Triamcinolone AcetonideTriamcinolone Acetonide18suppressed
Ventolin HfaAlbuterol Sulfate18suppressed
Donepezil HclDonepezil Hcl17suppressed
Fluoxetine HclFluoxetine Hcl17suppressed
ChlorthalidoneChlorthalidone16suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen16suppressed
SpironolactoneSpironolactone16suppressed
AlprazolamAlprazolam15suppressed
Buspirone HclBuspirone Hcl15suppressed
FenofibrateFenofibrate,micronized15suppressed
Promethazine HclPromethazine Hcl15suppressed
VyvanseLisdexamfetamine Dimesylate15suppressed
Dexlansoprazole DrDexlansoprazole14suppressed
GlyburideGlyburide14suppressed
Labetalol HclLabetalol Hcl14suppressed
Pioglitazone HclPioglitazone Hcl14suppressed
Tolterodine Tartrate ErTolterodine Tartrate14suppressed
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl13suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine13suppressed
Minocycline HclMinocycline Hcl13suppressed
Paroxetine HclParoxetine Hcl13suppressed
GlimepirideGlimepiride12suppressed
Mometasone FuroateMometasone Furoate12suppressed
NystopNystatin12suppressed
LovastatinLovastatin11suppressed
Morphine Sulfate ErMorphine Sulfate11suppressed
Ranolazine ErRanolazine11suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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