Payment overview · 2025
General Payments
$444.91
7 reported records · 6 companies
Healthcare provider profile · identity verified
William J Zaks, MD
Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · GRAND FORKS, ND · NPI 1437249307
Verified facts
What the public records show
CMS Open Payments records show William J Zaks, MD received $444.91 in general payments during 2025 across 7 reported records.
Merck Sharp & Dohme LLC accounted for 50.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 7 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Mounjaro.
Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 158 claims for Jardiance by this doctor in 2024.
Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Mounjaro by this doctor in 2024.
Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Trulicity by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
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.
Who paid this doctor?
Companies in 2025 General Payments
| Reported company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $223.97 | 50.3% | 2 | 2025 |
| Phathom Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $97.65 | 21.9% | 1 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $67.47 | 15.2% | 1 | 2025 |
| Tandem Diabetes Care, Inc. | Unresolved — no canonical attribution shown | $25.14 | 5.7% | 1 | 2025 |
| Dexcom, Inc. | Unresolved — no canonical attribution shown | $18.55 | 4.2% | 1 | 2025 |
| BETA BIONICS, INC. | Unresolved — no canonical attribution shown | $12.13 | 2.7% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $444.91 | 7 |
A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.
Analysis 1 · Payment-linked products
Products named in Open Payments records
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| VOQUEZNA Normalized: voquezna |
Drug | Phathom Pharmaceuticals, Inc. | $97.65 | 1 | 2025 |
Source payment records
|
|||||
| MOUNJARO Normalized: mounjaro |
Drug | Lilly USA, LLC | $67.47 | 1 | 2025 |
Source payment records
|
|||||
| t:slim X2 Insulin Pump with Control-IQ Normalized: t slim x2 insulin pump with control iq |
Device | Tandem Diabetes Care, Inc. | $25.14 | 1 | 2025 |
Source payment records
|
|||||
| Dexcom G6 Transmitter Normalized: dexcom g6 transmitter |
Medical Supply | Dexcom, Inc. | $18.55 | 1 | 2025 |
Source payment records
|
|||||
| iLet Bionic Pancreas Normalized: ilet bionic pancreas |
Device | BETA BIONICS, INC. | $12.13 | 1 | 2025 |
Source payment records
|
|||||
| iLet Insulin Infusion Kit Contact Detach Normalized: ilet insulin infusion kit contact detach |
Device | BETA BIONICS, INC. | $12.13 | 1 | 2025 |
Source payment records
|
|||||
| iLet Insulin Infusion Kit Inset Normalized: ilet insulin infusion kit inset |
Device | BETA BIONICS, INC. | $12.13 | 1 | 2025 |
Source payment records
|
|||||
* Product-associated amounts are non-additive because one payment record may name more than one product.
These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.
Public prescribing for products named in payments
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| MOUNJARO mounjaro |
2025 | Mounjaro | 2024 | 19 Beneficiary count suppressed |
exact normalized | Medicare Part D |
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.
| Paying company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| Lilly USA, LLC Exact reporting entity; no affiliate inference |
2025 | JARDIANCE open payments reported associated product |
CMS Open Payments — General Payments 47708 supporting records · 23833 recipient NPIs · example record 1186464557 |
Jardiance · 2024 Exact normalized brand match · 1 Part D row |
158 | 34 |
| Lilly USA, LLC Exact reporting entity; no affiliate inference |
2025 | MOUNJARO open payments reported associated product |
CMS Open Payments — General Payments 186719 supporting records · 66436 recipient NPIs · example record 1186464455 |
Mounjaro · 2024 Exact normalized brand match · 1 Part D row |
19 | suppressed by CMS |
| Lilly USA, LLC Exact reporting entity; no affiliate inference |
2025 | TRULICITY open payments reported associated product |
CMS Open Payments — General Payments 71 supporting records · 57 recipient NPIs · example record 1186464601 |
Trulicity · 2024 Exact normalized brand match · 1 Part D row |
25 | suppressed by CMS |
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 |
|---|---|---|---|
| Metformin Hcl | Metformin Hcl | 447 | 106 |
| Ozempic | Semaglutide | 387 | 61 |
| Levothyroxine Sodium | Levothyroxine Sodium | 345 | 90 |
| Atorvastatin Calcium | Atorvastatin Calcium | 318 | 88 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 258 | 67 |
| Farxiga | Dapagliflozin Propanediol | 179 | 28 |
| Jardiance | Empagliflozin | 158 | 34 |
| Simvastatin | Simvastatin | 146 | 38 |
| Humalog Kwikpen U-100 | Insulin Lispro | 140 | 39 |
| Novolog Flexpen | Insulin Aspart | 140 | 56 |
| Amlodipine Besylate | Amlodipine Besylate | 128 | 37 |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 125 | 28 |
| Lisinopril | Lisinopril | 120 | 37 |
| Losartan Potassium | Losartan Potassium | 117 | 33 |
| Omeprazole | Omeprazole | 101 | 31 |
| Metoprolol Succinate | Metoprolol Succinate | 100 | 36 |
| Pioglitazone Hcl | Pioglitazone Hcl | 99 | 24 |
| Fiasp Flextouch | Insulin Aspart (Niacinamide) | 94 | 29 |
| Methimazole | Methimazole | 85 | 22 |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 84 | 28 |
| Metoprolol Tartrate | Metoprolol Tartrate | 82 | 21 |
| Tresiba Flextouch U-200 | Insulin Degludec | 78 | 15 |
| Eliquis | Apixaban | 72 | 12 |
| Clopidogrel | Clopidogrel Bisulfate | 71 | 17 |
| Alendronate Sodium | Alendronate Sodium | 65 | 20 |
| Prednisone | Prednisone | 62 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 62 | 13 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 59 | 21 |
| Ultra-Fine Mini Pen Needle | Pen Needle, Diabetic | 56 | 18 |
| Glimepiride | Glimepiride | 54 | 14 |
| Hydrochlorothiazide | Hydrochlorothiazide | 53 | 21 |
| Ultra-Fine Short Pen Needle | Pen Needle, Diabetic | 53 | 15 |
| Allopurinol | Allopurinol | 52 | 17 |
| Duloxetine Hcl | Duloxetine Hcl | 52 | 16 |
| Testosterone | Testosterone | 51 | suppressed |
| Metformin Hcl Er | Metformin Hcl | 50 | 12 |
| Gabapentin | Gabapentin | 48 | 14 |
| Pantoprazole Sodium | Pantoprazole Sodium | 47 | suppressed |
| Ultra-Fine Nano Pen Needle | Pen Needle, Diabetic | 46 | 18 |
| Hydrocortisone | Hydrocortisone | 45 | suppressed |
| Tresiba Flextouch U-100 | Insulin Degludec | 42 | 18 |
| Tamsulosin Hcl | Tamsulosin Hcl | 40 | 12 |
| Zolpidem Tartrate | Zolpidem Tartrate | 40 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 38 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 38 | 13 |
| Sertraline Hcl | Sertraline Hcl | 38 | suppressed |
| Testosterone Cypionate | Testosterone Cypionate | 35 | suppressed |
| Toujeo Solostar | Insulin Glargine,hum.Rec.Anlog | 35 | suppressed |
| Humulin R U-500 Kwikpen | Insulin Regular, Human | 32 | suppressed |
| Enalapril Maleate | Enalapril Maleate | 31 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 31 | suppressed |
| Rybelsus | Semaglutide | 31 | suppressed |
| Insulin Aspart Flexpen | Insulin Aspart | 29 | 12 |
| Soliqua 100-33 | Insulin Glargine/Lixisenatide | 29 | suppressed |
| Spironolactone | Spironolactone | 29 | suppressed |
| Toujeo Max Solostar | Insulin Glargine,hum.Rec.Anlog | 29 | suppressed |
| Finasteride | Finasteride | 26 | suppressed |
| Furosemide | Furosemide | 26 | suppressed |
| Victoza 3-Pak | Liraglutide | 26 | suppressed |
| Gemfibrozil | Gemfibrozil | 25 | suppressed |
| Nifedipine Er | Nifedipine | 25 | suppressed |
| Trulicity | Dulaglutide | 25 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 23 | suppressed |
| Januvia | Sitagliptin Phosphate | 23 | suppressed |
| Memantine Hcl | Memantine Hcl | 23 | suppressed |
| Easy Touch Pen Needle | Pen Needle, Diabetic | 22 | suppressed |
| Chlorthalidone | Chlorthalidone | 21 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 21 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 20 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 20 | suppressed |
| Carvedilol | Carvedilol | 19 | suppressed |
| Mounjaro | Tirzepatide | 19 | suppressed |
| Eletriptan Hbr | Eletriptan Hydrobromide | 18 | suppressed |
| Labetalol Hcl | Labetalol Hcl | 18 | suppressed |
| Lidocaine | Lidocaine | 18 | suppressed |
| Calcitriol | Calcitriol | 17 | suppressed |
| Ezetimibe | Ezetimibe | 17 | suppressed |
| Humalog | Insulin Lispro | 17 | suppressed |
| Synthroid | Levothyroxine Sodium | 17 | suppressed |
| Ulticare Pen Needle | Pen Needle, Diabetic | 17 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 17 | suppressed |
| Atenolol | Atenolol | 16 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 16 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 16 | suppressed |
| Potassium Chloride | Potassium Chloride | 16 | suppressed |
| Victoza 2-Pak | Liraglutide | 16 | suppressed |
| Bupropion Xl | Bupropion Hcl | 15 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 15 | suppressed |
| Dexamethasone | Dexamethasone | 15 | 12 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 15 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 15 | suppressed |
| Insulin Lispro | Insulin Lispro | 14 | suppressed |
| Insulin Syringe | Syringe And Needle,insulin,1ml | 14 | suppressed |
| Insulin Syringe | Syringe-Needle,insulin,0.5 Ml | 14 | suppressed |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 14 | suppressed |
| Nitroglycerin | Nitroglycerin | 14 | 14 |
| Pregabalin | Pregabalin | 14 | suppressed |
| Valsartan | Valsartan | 14 | suppressed |
| Bumetanide | Bumetanide | 13 | suppressed |
| Famotidine | Famotidine | 13 | suppressed |
| Fludrocortisone Acetate | Fludrocortisone Acetate | 13 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 13 | suppressed |
| Levemir Flexpen | Insulin Detemir | 13 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 13 | suppressed |
| Baclofen | Baclofen | 12 | suppressed |
| Butalbital-Acetaminophen-Caffe | Butalb/Acetaminophen/Caffeine | 12 | suppressed |
| Clonazepam | Clonazepam | 12 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 12 | suppressed |
| Omnipod 5 Dexg7g6 Pods (Gen 5) | Insulin Pump Cart,auto,bt,g6/7 | 12 | suppressed |
| Unifine Safecontrol Pen Needle | Pen Needle,dual Safety,diabetc | 12 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 11 | suppressed |
| Fluticasone Propionate | Fluticasone Propionate | 11 | suppressed |
| Forteo | Teriparatide | 11 | suppressed |
| Glipizide | Glipizide | 11 | suppressed |
| Insulin Lispro Protamine Mix | Insulin Lispro Protamin/Lispro | 11 | suppressed |
| Novolin N | Insulin Nph Human Isophane | 11 | suppressed |
| Torsemide | Torsemide | 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 | $444.91 · 7 records | Merck Sharp & Dohme LLC | Dexcom G6 Transmitter, MOUNJARO, VOQUEZNA, iLet Bionic Pancreas, iLet Insulin Infusion Kit Contact Detach, iLet Insulin Infusion Kit Inset, t:slim X2 Insulin Pump with Control-IQ | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Mounjaro play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Lilly USA, LLC?
- 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 |
Full methodology · Questions & answers · Report a possible error