Payment overview · 2025
General Payments
$111.08
6 reported records · 4 companies
Healthcare provider profile · identity verified
Tarah Chamberlain, D.O.
Allopathic & Osteopathic Physicians|Family Medicine · GILLETTE, WY · NPI 1831490820
Verified facts
What the public records show
CMS Open Payments records show Tarah Chamberlain, D.O. received $111.08 in general payments during 2025 across 6 reported records.
Novo Nordisk Inc accounted for 33.1% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 5 associated products.
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 |
|---|---|---|---|---|---|
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $36.75 | 33.1% | 2 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $30.97 | 27.9% | 2 | 2025 |
| Astellas Pharma US Inc | Unresolved — no canonical attribution shown | $26.03 | 23.4% | 1 | 2025 |
| Actelion Pharmaceuticals US, Inc. | Unresolved — no canonical attribution shown | $17.33 | 15.6% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $111.08 | 6 |
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 |
|---|---|---|---|---|---|
| EVENITY Normalized: evenity |
Biological | Amgen Inc. | $30.97 | 2 | 2025 |
Source payment records
|
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| Veozah Normalized: veozah |
Drug | Astellas Pharma US Inc | $26.03 | 1 | 2025 |
Source payment records
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| Wegovy Normalized: wegovy |
Drug | Novo Nordisk Inc | $17.63 | 1 | 2025 |
Source payment records
|
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| OPSUMIT Normalized: opsumit |
Drug | Actelion Pharmaceuticals US, Inc. | $17.33 | 1 | 2025 |
Source payment records
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| UPTRAVI Normalized: uptravi |
Drug | Actelion Pharmaceuticals US, Inc. | $17.33 | 1 | 2025 |
Source payment records
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* 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
No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.
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.
No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.
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 |
|---|---|---|---|
| Eliquis | Apixaban | 205 | 20 |
| Furosemide | Furosemide | 201 | 25 |
| Omeprazole | Omeprazole | 193 | 33 |
| Pantoprazole Sodium | Pantoprazole Sodium | 168 | 34 |
| Atorvastatin Calcium | Atorvastatin Calcium | 133 | 24 |
| Amlodipine Besylate | Amlodipine Besylate | 118 | 24 |
| Potassium Chloride | Potassium Chloride | 117 | 35 |
| Warfarin Sodium | Warfarin Sodium | 114 | 11 |
| Metoprolol Succinate | Metoprolol Succinate | 113 | 27 |
| Levothyroxine Sodium | Levothyroxine Sodium | 109 | 26 |
| Lisinopril | Lisinopril | 109 | 21 |
| Losartan Potassium | Losartan Potassium | 106 | 22 |
| Trazodone Hcl | Trazodone Hcl | 97 | 22 |
| Gabapentin | Gabapentin | 79 | 16 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 79 | 16 |
| Hydralazine Hcl | Hydralazine Hcl | 77 | 20 |
| Tamsulosin Hcl | Tamsulosin Hcl | 70 | 19 |
| Mirtazapine | Mirtazapine | 68 | 11 |
| Allopurinol | Allopurinol | 62 | 12 |
| Clopidogrel | Clopidogrel Bisulfate | 60 | 12 |
| Duloxetine Hcl | Duloxetine Hcl | 56 | 11 |
| Carvedilol | Carvedilol | 54 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 50 | 11 |
| Simvastatin | Simvastatin | 45 | suppressed |
| Spironolactone | Spironolactone | 44 | 12 |
| Metoprolol Tartrate | Metoprolol Tartrate | 43 | 13 |
| Famotidine | Famotidine | 42 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 37 | suppressed |
| Levetiracetam | Levetiracetam | 37 | suppressed |
| Metformin Hcl | Metformin Hcl | 37 | suppressed |
| Albuterol Sulfate | Albuterol Sulfate | 35 | 29 |
| Buspirone Hcl | Buspirone Hcl | 35 | 11 |
| Jardiance | Empagliflozin | 33 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 33 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 32 | 12 |
| Diclofenac Sodium | Diclofenac Sodium | 31 | 14 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 31 | 14 |
| Prednisone | Prednisone | 31 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 31 | suppressed |
| Sertraline Hcl | Sertraline Hcl | 31 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 30 | suppressed |
| Autoshield Duo Pen Needle | Pen Needle,dual Safety,diabetc | 29 | suppressed |
| Baclofen | Baclofen | 28 | 11 |
| Ipratropium-Albuterol | Ipratropium/Albuterol Sulfate | 28 | suppressed |
| Cephalexin | Cephalexin | 27 | 12 |
| Hydrochlorothiazide | Hydrochlorothiazide | 27 | suppressed |
| Budesonide | Budesonide | 26 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 26 | 13 |
| Fluoxetine Hcl | Fluoxetine Hcl | 25 | suppressed |
| Bumetanide | Bumetanide | 24 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 24 | suppressed |
| Pentoxifylline | Pentoxifylline | 24 | suppressed |
| Lorazepam | Lorazepam | 22 | suppressed |
| Diltiazem 24hr Er | Diltiazem Hcl | 20 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 20 | suppressed |
| Meloxicam | Meloxicam | 20 | suppressed |
| Azithromycin | Azithromycin | 19 | suppressed |
| Enoxaparin Sodium | Enoxaparin Sodium | 19 | suppressed |
| Novofine Autocover | Pen Needle, Diabetic, Safety | 19 | suppressed |
| Divalproex Sodium Er | Divalproex Sodium | 18 | suppressed |
| Doxycycline Hyclate | Doxycycline Hyclate | 18 | suppressed |
| Glipizide | Glipizide | 18 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 18 | suppressed |
| Morphine Sulfate Er | Morphine Sulfate | 18 | suppressed |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 17 | suppressed |
| Lamotrigine | Lamotrigine | 17 | suppressed |
| Olanzapine | Olanzapine | 17 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 16 | suppressed |
| Arformoterol Tartrate | Arformoterol Tartrate | 15 | suppressed |
| Diltiazem 24hr Er (La) | Diltiazem Hcl | 15 | suppressed |
| Acetazolamide | Acetazolamide | 14 | suppressed |
| Finasteride | Finasteride | 14 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 13 | suppressed |
| Atenolol | Atenolol | 13 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 13 | suppressed |
| Cefuroxime | Cefuroxime Axetil | 13 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 13 | suppressed |
| Fenofibrate | Fenofibrate,micronized | 13 | suppressed |
| Potassium Citrate Er | Potassium Citrate | 13 | suppressed |
| Primidone | Primidone | 13 | suppressed |
| Spiriva Handihaler | Tiotropium Bromide | 13 | suppressed |
| Xarelto | Rivaroxaban | 13 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 12 | suppressed |
| Anoro Ellipta | Umeclidinium Brm/Vilanterol Tr | 12 | suppressed |
| Januvia | Sitagliptin Phosphate | 12 | suppressed |
| Memantine Hcl | Memantine Hcl | 12 | suppressed |
| Tresiba Flextouch U-100 | Insulin Degludec | 12 | suppressed |
| Venlafaxine Hcl | Venlafaxine Hcl | 12 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 11 | suppressed |
| Klor-Con 8 | Potassium Chloride | 11 | suppressed |
| Methimazole | Methimazole | 11 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 11 | suppressed |
| Novolin 70-30 Flexpen | Insulin Nph Hum/Reg Insulin Hm | 11 | suppressed |
| Vancomycin Hcl | Vancomycin/Water For Inj (Peg) | 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 | $111.08 · 6 records | Novo Nordisk Inc | EVENITY, OPSUMIT, UPTRAVI, Veozah, Wegovy | — | — |
| 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