Payment overview · 2025
General Payments
We did not find matching Open Payments records for this doctor in the selected program year.
Healthcare provider profile · identity verified
Chad C. Lamb, M.D.
Family Practice · ANDERSON, IN · NPI 1225066392
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.
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 | 544 | 157 |
| Amlodipine Besylate | Amlodipine Besylate | 344 | 98 |
| Levothyroxine Sodium | Levothyroxine Sodium | 282 | 72 |
| Simvastatin | Simvastatin | 239 | 62 |
| Metoprolol Succinate | Metoprolol Succinate | 231 | 66 |
| Lisinopril | Lisinopril | 217 | 62 |
| Tamsulosin Hcl | Tamsulosin Hcl | 190 | 52 |
| Duloxetine Hcl | Duloxetine Hcl | 176 | 37 |
| Gabapentin | Gabapentin | 171 | 42 |
| Omeprazole | Omeprazole | 163 | 45 |
| Metformin Hcl | Metformin Hcl | 158 | 44 |
| Losartan Potassium | Losartan Potassium | 133 | 39 |
| Hydrochlorothiazide | Hydrochlorothiazide | 123 | 38 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 117 | 33 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 116 | 31 |
| Metformin Hcl Er | Metformin Hcl | 111 | 35 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 98 | 38 |
| Allopurinol | Allopurinol | 94 | 19 |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 94 | 18 |
| Alprazolam | Alprazolam | 91 | 14 |
| Meloxicam | Meloxicam | 91 | 29 |
| Bisoprolol-Hydrochlorothiazide | Bisoprolol/Hydrochlorothiazide | 90 | 23 |
| Furosemide | Furosemide | 88 | 32 |
| Montelukast Sodium | Montelukast Sodium | 80 | 26 |
| Eliquis | Apixaban | 79 | 24 |
| Fluticasone Propionate | Fluticasone Propionate | 78 | 28 |
| Alendronate Sodium | Alendronate Sodium | 76 | 20 |
| Pioglitazone Hcl | Pioglitazone Hcl | 75 | 20 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 72 | 20 |
| Clopidogrel | Clopidogrel Bisulfate | 71 | 22 |
| Pantoprazole Sodium | Pantoprazole Sodium | 71 | 23 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 70 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 70 | 16 |
| Tramadol Hcl-Acetaminophen | Tramadol Hcl/Acetaminophen | 68 | 17 |
| Pregabalin | Pregabalin | 61 | suppressed |
| Celecoxib | Celecoxib | 60 | 19 |
| Sertraline Hcl | Sertraline Hcl | 60 | 19 |
| Fluoxetine Hcl | Fluoxetine Hcl | 59 | 15 |
| Januvia | Sitagliptin Phosphate | 59 | 13 |
| Mirtazapine | Mirtazapine | 59 | 15 |
| Ipratropium Bromide | Ipratropium Bromide | 58 | 29 |
| Escitalopram Oxalate | Escitalopram Oxalate | 57 | 12 |
| Carvedilol | Carvedilol | 55 | 13 |
| Potassium Chloride | Potassium Chloride | 54 | 12 |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 54 | 15 |
| Finasteride | Finasteride | 52 | 13 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 51 | 18 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 49 | 14 |
| Ozempic | Semaglutide | 49 | 12 |
| Glimepiride | Glimepiride | 46 | 13 |
| Metoprolol Tartrate | Metoprolol Tartrate | 44 | 15 |
| Citalopram Hbr | Citalopram Hydrobromide | 42 | suppressed |
| Zolpidem Tartrate | Zolpidem Tartrate | 42 | 12 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 41 | 11 |
| Meclizine Hcl | Meclizine Hcl | 40 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 38 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 38 | 11 |
| Clonazepam | Clonazepam | 37 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 36 | suppressed |
| Lorazepam | Lorazepam | 36 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 36 | suppressed |
| Chlorthalidone | Chlorthalidone | 35 | suppressed |
| Valsartan | Valsartan | 35 | suppressed |
| Spironolactone | Spironolactone | 34 | suppressed |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 33 | suppressed |
| Doxepin Hcl | Doxepin Hcl | 31 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 30 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 30 | 21 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 30 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 29 | suppressed |
| Desvenlafaxine Succinate Er | Desvenlafaxine Succinate | 28 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 26 | suppressed |
| Bisoprolol Fumarate | Bisoprolol Fumarate | 26 | suppressed |
| Bupropion Xl | Bupropion Hcl | 25 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 25 | suppressed |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 25 | suppressed |
| Synthroid | Levothyroxine Sodium | 25 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 24 | suppressed |
| Benazepril-Hydrochlorothiazide | Benazepril/Hydrochlorothiazide | 23 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 23 | suppressed |
| Prednisone | Prednisone | 23 | 15 |
| Budesonide-Formoterol Fumarate | Budesonide/Formoterol Fumarate | 22 | suppressed |
| Fentanyl | Fentanyl | 22 | suppressed |
| Irbesartan-Hydrochlorothiazide | Irbesartan/Hydrochlorothiazide | 22 | suppressed |
| Torsemide | Torsemide | 22 | suppressed |
| Fenofibrate | Fenofibrate | 21 | suppressed |
| Ondansetron Odt | Ondansetron | 21 | suppressed |
| Raloxifene Hcl | Raloxifene Hcl | 21 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 21 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 21 | 15 |
| Donepezil Hcl | Donepezil Hcl | 20 | suppressed |
| Estradiol | Estradiol | 20 | suppressed |
| Primidone | Primidone | 20 | suppressed |
| Irbesartan | Irbesartan | 19 | suppressed |
| Nystatin | Nystatin | 19 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 19 | suppressed |
| Lansoprazole | Lansoprazole | 18 | suppressed |
| Mupirocin | Mupirocin | 18 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 18 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 17 | suppressed |
| Methocarbamol | Methocarbamol | 17 | suppressed |
| Mounjaro | Tirzepatide | 17 | suppressed |
| Tolterodine Tartrate Er | Tolterodine Tartrate | 17 | suppressed |
| Famotidine | Famotidine | 16 | suppressed |
| Linzess | Linaclotide | 16 | suppressed |
| Oxybutynin Chloride | Oxybutynin Chloride | 16 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 15 | suppressed |
| Ketoconazole | Ketoconazole | 15 | suppressed |
| Methylprednisolone | Methylprednisolone | 15 | 14 |
| Ondansetron Hcl | Ondansetron Hcl | 15 | suppressed |
| Terbinafine Hcl | Terbinafine Hcl | 15 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 14 | 14 |
| Myrbetriq | Mirabegron | 14 | suppressed |
| Varenicline Tartrate | Varenicline Tartrate | 14 | suppressed |
| Verapamil Er | Verapamil Hcl | 14 | suppressed |
| Colesevelam Hcl | Colesevelam Hcl | 13 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 13 | suppressed |
| Jardiance | Empagliflozin | 13 | suppressed |
| Olanzapine | Olanzapine | 13 | suppressed |
| Premarin | Estrogens, Conjugated | 13 | suppressed |
| Ramipril | Ramipril | 13 | suppressed |
| Tresiba Flextouch U-100 | Insulin Degludec | 13 | suppressed |
| Invokana | Canagliflozin | 12 | suppressed |
| Janumet | Sitagliptin Phos/Metformin Hcl | 12 | suppressed |
| Methylphenidate Hcl | Methylphenidate Hcl | 12 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 12 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 12 | suppressed |
| Rizatriptan | Rizatriptan Benzoate | 12 | suppressed |
| Trintellix | Vortioxetine Hydrobromide | 12 | suppressed |
| Ultra-Fine Short Pen Needle | Pen Needle, Diabetic | 12 | suppressed |
| Arnuity Ellipta | Fluticasone Furoate | 11 | suppressed |
| Cephalexin | Cephalexin | 11 | suppressed |
| Doxycycline Hyclate | Doxycycline Hyclate | 11 | 11 |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 11 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 11 | suppressed |
| Naproxen | Naproxen | 11 | suppressed |
| Olanzapine Odt | Olanzapine | 11 | suppressed |
| Promethazine Hcl | Promethazine Hcl | 11 | suppressed |
| Rabeprazole Sodium | Rabeprazole Sodium | 11 | suppressed |
| Ultra-Fine Mini Pen Needle | Pen Needle, Diabetic | 11 | suppressed |
| Ventolin Hfa | Albuterol Sulfate | 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 |
Full methodology · Questions & answers · Report a possible error