Payment overview · 2025
General Payments
$392.26
19 reported records · 11 companies
Healthcare provider profile · identity verified
David Hamaker, PA-C
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical · BURTON, MI · NPI 1427092147
Verified facts
What the public records show
CMS Open Payments records show David Hamaker, PA-C received $392.26 in general payments during 2025 across 19 reported records.
Otsuka America Pharmaceutical, Inc. accounted for 21.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 14 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Trelegy Ellipta.
GlaxoSmithKline, 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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 53 claims for Trelegy Ellipta 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 |
|---|---|---|---|---|---|
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $83.57 | 21.3% | 3 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $62.56 | 15.9% | 3 | 2025 |
| Vanda Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $39.02 | 9.9% | 2 | 2025 |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) | Unresolved — no canonical attribution shown | $38.01 | 9.7% | 2 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $33.95 | 8.7% | 2 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $30.75 | 7.8% | 2 | 2025 |
| Hologic Sales and Service, LLC | Unresolved — no canonical attribution shown | $24.71 | 6.3% | 1 | 2025 |
| Alkermes, Inc. | Unresolved — no canonical attribution shown | $24.00 | 6.1% | 1 | 2025 |
| Exact Sciences Corporation | Unresolved — no canonical attribution shown | $22.82 | 5.8% | 1 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $16.45 | 4.2% | 1 | 2025 |
| Lundbeck LLC | Unresolved — no canonical attribution shown | $16.42 | 4.2% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $392.26 | 19 |
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 |
|---|---|---|---|---|---|
| REXULTI Normalized: rexulti |
Drug | Lundbeck LLC, Otsuka America Pharmaceutical, Inc. | $99.99 | 4 | 2025 |
Source payment records
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| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $62.56 | 3 | 2025 |
Source payment records
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| Rybelsus Normalized: rybelsus |
Drug | Novo Nordisk Inc | $62.56 | 3 | 2025 |
Source payment records
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| FANAPT Normalized: fanapt |
Drug | Vanda Pharmaceuticals Inc. | $39.02 | 2 | 2025 |
Source payment records
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| CAPLYTA Normalized: caplyta |
Drug | ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) | $38.01 | 2 | 2025 |
Source payment records
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| OTEZLA Normalized: otezla |
Drug | Amgen Inc. | $33.95 | 2 | 2025 |
Source payment records
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| REPATHA Normalized: repatha |
Biological | Amgen Inc. | $33.95 | 2 | 2025 |
Source payment records
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| TRELEGY ELLIPTA Normalized: trelegy ellipta |
Drug | GlaxoSmithKline, LLC. | $30.75 | 2 | 2025 |
Source payment records
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| APTIMA Normalized: aptima |
Device | Hologic Sales and Service, LLC | $24.71 | 1 | 2025 |
Source payment records
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| THINPREP 2000 PROCESSOR Normalized: thinprep 2000 processor |
Device | Hologic Sales and Service, LLC | $24.71 | 1 | 2025 |
Source payment records
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| ARISTADA Normalized: aristada |
Drug | Alkermes, Inc. | $24.00 | 1 | 2025 |
Source payment records
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| LYBALVI Normalized: lybalvi |
Drug | Alkermes, Inc. | $24.00 | 1 | 2025 |
Source payment records
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| The Cologuard Plus Collection Kit Normalized: the cologuard plus collection kit |
Device | Exact Sciences Corporation | $22.82 | 1 | 2025 |
Source payment records
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| VRAYLAR Normalized: vraylar |
Drug | ABBVIE INC. | $16.45 | 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
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| TRELEGY ELLIPTA trelegy ellipta |
2025 | Trelegy Ellipta | 2024 | 53 | 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 |
|---|---|---|---|---|---|---|
| GlaxoSmithKline, LLC. Exact reporting entity; no affiliate inference |
2025 | TRELEGY ELLIPTA open payments reported associated product |
CMS Open Payments — General Payments 131532 supporting records · 37148 recipient NPIs · example record 1190332369 |
Trelegy Ellipta · 2024 Exact normalized brand match · 1 Part D row |
53 | 16 |
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 |
|---|---|---|---|
| Omeprazole | Omeprazole | 236 | 44 |
| Losartan Potassium | Losartan Potassium | 192 | 38 |
| Amlodipine Besylate | Amlodipine Besylate | 188 | 45 |
| Atorvastatin Calcium | Atorvastatin Calcium | 182 | 48 |
| Levothyroxine Sodium | Levothyroxine Sodium | 171 | 35 |
| Simvastatin | Simvastatin | 165 | 37 |
| Hydrochlorothiazide | Hydrochlorothiazide | 159 | 29 |
| Metformin Hcl | Metformin Hcl | 132 | 31 |
| Metoprolol Tartrate | Metoprolol Tartrate | 130 | 23 |
| Methylprednisolone | Methylprednisolone | 106 | 69 |
| Fenofibrate | Fenofibrate | 99 | 18 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 98 | 27 |
| Lisinopril | Lisinopril | 95 | 24 |
| Gabapentin | Gabapentin | 87 | 20 |
| Ibuprofen | Ibuprofen | 86 | 25 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 77 | 22 |
| Pioglitazone Hcl | Pioglitazone Hcl | 77 | 15 |
| Amitriptyline Hcl | Amitriptyline Hcl | 69 | 11 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 69 | 16 |
| Meloxicam | Meloxicam | 69 | 18 |
| Promethazine Hcl | Promethazine Hcl | 69 | 46 |
| Clopidogrel | Clopidogrel Bisulfate | 68 | 15 |
| Trulicity | Dulaglutide | 66 | 13 |
| Ventolin Hfa | Albuterol Sulfate | 65 | 14 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 62 | 35 |
| Furosemide | Furosemide | 62 | 15 |
| Trazodone Hcl | Trazodone Hcl | 55 | 12 |
| Glipizide | Glipizide | 54 | 13 |
| Sertraline Hcl | Sertraline Hcl | 54 | suppressed |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 53 | 16 |
| Pregabalin | Pregabalin | 52 | suppressed |
| Amoxicillin | Amoxicillin | 49 | 36 |
| Bupropion Xl | Bupropion Hcl | 49 | suppressed |
| Famotidine | Famotidine | 46 | 11 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 46 | suppressed |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 43 | 12 |
| Montelukast Sodium | Montelukast Sodium | 42 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 42 | 19 |
| Tamsulosin Hcl | Tamsulosin Hcl | 35 | 12 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 34 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 34 | suppressed |
| Lamotrigine | Lamotrigine | 31 | suppressed |
| Nystatin | Nystatin | 31 | suppressed |
| Pantoprazole Sodium | Pantoprazole Sodium | 31 | suppressed |
| Clonazepam | Clonazepam | 29 | suppressed |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 25 | suppressed |
| Estradiol | Estradiol | 24 | suppressed |
| Fluconazole | Fluconazole | 24 | 18 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 24 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 24 | suppressed |
| Spironolactone | Spironolactone | 24 | suppressed |
| Testosterone Cypionate | Testosterone Cypionate | 24 | suppressed |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 23 | suppressed |
| Januvia | Sitagliptin Phosphate | 23 | suppressed |
| Allopurinol | Allopurinol | 22 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 22 | 20 |
| Potassium Chloride | Potassium Chloride | 21 | suppressed |
| Atenolol | Atenolol | 20 | suppressed |
| Azithromycin | Azithromycin | 20 | 15 |
| Lovastatin | Lovastatin | 19 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 18 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 18 | suppressed |
| Prednisone | Prednisone | 18 | 13 |
| Varenicline Tartrate | Varenicline Tartrate | 18 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 17 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 17 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 17 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 17 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 17 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 17 | suppressed |
| Lantus | Insulin Glargine,hum.Rec.Anlog | 17 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 16 | suppressed |
| Carvedilol | Carvedilol | 16 | suppressed |
| Gemfibrozil | Gemfibrozil | 16 | suppressed |
| Lurasidone Hcl | Lurasidone Hcl | 16 | suppressed |
| Aripiprazole | Aripiprazole | 15 | suppressed |
| Eliquis | Apixaban | 15 | suppressed |
| Oxybutynin Chloride | Oxybutynin Chloride | 15 | suppressed |
| Dextroamphetamine-Amphet Er | Dextroamphetamine/Amphetamine | 14 | suppressed |
| Fluticasone Propionate | Fluticasone Propionate | 14 | suppressed |
| Levetiracetam | Levetiracetam | 14 | suppressed |
| Mirtazapine | Mirtazapine | 14 | suppressed |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 13 | suppressed |
| Atrovent Hfa | Ipratropium Bromide | 13 | suppressed |
| Auvelity | Dextromethorphan Hbr/Bupropion | 13 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 13 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 13 | suppressed |
| Lorazepam | Lorazepam | 13 | suppressed |
| Naproxen | Naproxen | 13 | suppressed |
| Progesterone | Progesterone, Micronized | 13 | suppressed |
| Spironolactone-Hctz | Spironolact/Hydrochlorothiazid | 13 | suppressed |
| Xarelto | Rivaroxaban | 13 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 12 | suppressed |
| Levofloxacin | Levofloxacin | 12 | suppressed |
| Metoprolol Succinate | Metoprolol Succinate | 12 | suppressed |
| Ondansetron Odt | Ondansetron | 12 | suppressed |
| Oxcarbazepine | Oxcarbazepine | 12 | suppressed |
| Briviact | Brivaracetam | 11 | suppressed |
| Clonidine Hcl | Clonidine Hcl | 11 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 11 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 11 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 11 | suppressed |
| Nifedipine Er | Nifedipine | 11 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 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 | $392.26 · 19 records | Otsuka America Pharmaceutical, Inc. | APTIMA, ARISTADA, CAPLYTA, FANAPT, LYBALVI, OTEZLA, Ozempic, REPATHA, REXULTI, Rybelsus, THINPREP 2000 PROCESSOR, TRELEGY ELLIPTA, The Cologuard Plus Collection Kit, VRAYLAR | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Trelegy Ellipta play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with GlaxoSmithKline, 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