Healthcare provider profile · identity verified

Kipp W. Spencer, MD

Internal Medicine · WILLIMANTIC, CT · NPI 1013390517

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
Tramadol HclTramadol Hcl28045
Atorvastatin CalciumAtorvastatin Calcium245105
GabapentinGabapentin19143
LisinoprilLisinopril15767
Amlodipine BesylateAmlodipine Besylate12955
Pantoprazole SodiumPantoprazole Sodium11937
Metformin HclMetformin Hcl10542
IbuprofenIbuprofen7433
FurosemideFurosemide7125
JardianceEmpagliflozin7125
HydrochlorothiazideHydrochlorothiazide6921
Albuterol Sulfate HfaAlbuterol Sulfate6530
Tamsulosin HclTamsulosin Hcl6524
Fluticasone PropionateFluticasone Propionate5927
Levothyroxine SodiumLevothyroxine Sodium5217
Labetalol HclLabetalol Hcl51suppressed
NaproxenNaproxen5127
FamotidineFamotidine5013
Losartan PotassiumLosartan Potassium5020
Metformin Hcl ErMetformin Hcl5015
Metoprolol SuccinateMetoprolol Succinate4523
JanuviaSitagliptin Phosphate4113
Duloxetine HclDuloxetine Hcl4011
Metoprolol TartrateMetoprolol Tartrate3913
OmeprazoleOmeprazole3916
Rosuvastatin CalciumRosuvastatin Calcium3916
OzempicSemaglutide3813
Trazodone HclTrazodone Hcl3813
TrulicityDulaglutide38suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter37suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog33suppressed
Tizanidine HclTizanidine Hcl31suppressed
TradjentaLinagliptin31suppressed
Potassium ChloridePotassium Chloride30suppressed
Oxycodone HclOxycodone Hcl28suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl26suppressed
EliquisApixaban26suppressed
Diclofenac SodiumDiclofenac Sodium25suppressed
LinzessLinaclotide25suppressed
Ventolin HfaAlbuterol Sulfate25suppressed
Zolpidem TartrateZolpidem Tartrate25suppressed
CarvedilolCarvedilol24suppressed
Buspirone HclBuspirone Hcl23suppressed
ClopidogrelClopidogrel Bisulfate23suppressed
Montelukast SodiumMontelukast Sodium2311
MirtazapineMirtazapine22suppressed
PregabalinPregabalin22suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride21suppressed
AllopurinolAllopurinol20suppressed
Donepezil HclDonepezil Hcl20suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
Pravastatin SodiumPravastatin Sodium1911
Alendronate SodiumAlendronate Sodium18suppressed
ClonazepamClonazepam18suppressed
Hydroxyzine HclHydroxyzine Hcl18suppressed
Oxybutynin Chloride ErOxybutynin Chloride18suppressed
Spiriva RespimatTiotropium Bromide18suppressed
GlipizideGlipizide17suppressed
BaclofenBaclofen16suppressed
FenofibrateFenofibrate Nanocrystallized16suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol16suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen16suppressed
Zolpidem Tartrate ErZolpidem Tartrate16suppressed
Ondansetron OdtOndansetron15suppressed
PrednisonePrednisone1514
Sumatriptan SuccinateSumatriptan Succinate15suppressed
Tresiba Flextouch U-100Insulin Degludec15suppressed
XareltoRivaroxaban15suppressed
Humalog Kwikpen U-100Insulin Lispro14suppressed
Levemir FlexpenInsulin Detemir14suppressed
AlprazolamAlprazolam13suppressed
Citalopram HbrCitalopram Hydrobromide13suppressed
FinasterideFinasteride13suppressed
Oxybutynin ChlorideOxybutynin Chloride13suppressed
TopiramateTopiramate13suppressed
Dicyclomine HclDicyclomine Hcl12suppressed
Doxycycline HyclateDoxycycline Hyclate12suppressed
LevetiracetamLevetiracetam12suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12suppressed
Novolog FlexpenInsulin Aspart12suppressed
TemazepamTemazepam12suppressed
Triamcinolone AcetonideTriamcinolone Acetonide12suppressed
Amitriptyline HclAmitriptyline Hcl11suppressed
ChlorthalidoneChlorthalidone11suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium11suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide11suppressed

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