Healthcare provider profile · identity verified

Patrick Paul Litonjua, MD

Endocrinology · JANESVILLE, WI · NPI 1831297308

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
OzempicSemaglutide521113
Lantus SolostarInsulin Glargine,hum.Rec.Anlog487130
Levothyroxine SodiumLevothyroxine Sodium36085
TrulicityDulaglutide35286
Metformin Hcl ErMetformin Hcl33283
JardianceEmpagliflozin29266
Metformin HclMetformin Hcl25666
MounjaroTirzepatide23751
Humalog Kwikpen U-100Insulin Lispro18553
MethimazoleMethimazole17547
Tresiba Flextouch U-100Insulin Degludec13935
Novolog FlexpenInsulin Aspart12937
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11948
Humulin R U-500 KwikpenInsulin Regular, Human11824
Atorvastatin CalciumAtorvastatin Calcium11728
SynthroidLevothyroxine Sodium9621
HydrocortisoneHydrocortisone9321
Ultra-Fine Short Pen NeedlePen Needle, Diabetic9339
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic8432
GlimepirideGlimepiride7923
Tresiba Flextouch U-200Insulin Degludec7818
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog7119
Insulin Lispro Kwikpen U-100Insulin Lispro6825
SimvastatinSimvastatin6315
Semglee (Yfgn) PenInsulin Glargine-Yfgn5915
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic5826
Humulin 70/30 KwikpenInsulin Nph Hum/Reg Insulin Hm5416
JanuviaSitagliptin Phosphate5314
LantusInsulin Glargine,hum.Rec.Anlog5312
LisinoprilLisinopril5318
FarxigaDapagliflozin Propanediol49suppressed
TestosteroneTestosterone48suppressed
Testosterone CypionateTestosterone Cypionate47suppressed
CabergolineCabergoline42suppressed
GabapentinGabapentin4112
HumalogInsulin Lispro4111
GlipizideGlipizide40suppressed
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro37suppressed
Insulin Aspart FlexpenInsulin Aspart3611
Alendronate SodiumAlendronate Sodium33suppressed
Liothyronine SodiumLiothyronine Sodium30suppressed
Rosuvastatin CalciumRosuvastatin Calcium29suppressed
CalcitriolCalcitriol26suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog2611
Humulin 70-30Insulin Nph Hum/Reg Insulin Hm25suppressed
NovologInsulin Aspart25suppressed
Losartan PotassiumLosartan Potassium24suppressed
Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp23suppressed
Fludrocortisone AcetateFludrocortisone Acetate22suppressed
Levemir FlexpenInsulin Detemir2212
PrednisonePrednisone22suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog22suppressed
SpironolactoneSpironolactone20suppressed
Novolin 70-30 FlexpenInsulin Nph Hum/Reg Insulin Hm19suppressed
InvokanaCanagliflozin18suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/718suppressed
Insulin SyringeSyringe And Needle,insulin,1ml17suppressed
Veo Insulin SyringeSyringe And Needle,insulin,1ml16suppressed
Droplet Pen NeedlePen Needle, Diabetic15suppressed
Pravastatin SodiumPravastatin Sodium15suppressed
Easy Touch Pen NeedlePen Needle, Diabetic14suppressed
Insulin LisproInsulin Lispro14suppressed
LevoxylLevothyroxine Sodium14suppressed
Glipizide ErGlipizide13suppressed
Soliqua 100-33Insulin Glargine/Lixisenatide13suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc11suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)11suppressed
Humalog Kwikpen U-200Insulin Lispro11suppressed
Ulticare Pen NeedlePen Needle, Diabetic11suppressed
UnithroidLevothyroxine Sodium11suppressed

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