Payment overview · 2025
General Payments
19 reported records · 8 companies
Healthcare provider profile · identity verified
Allopathic & Osteopathic Physicians|Internal Medicine · SANTA PAULA, CA · NPI 1679568612
Verified facts
CMS Open Payments records show Jian A Chen, M.D. received $598.88 in general payments during 2025 across 19 reported records.
Enterra Medical, Inc. accounted for 30.8% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 15 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Mounjaro, Ozempic, Prolia, Rybelsus.
ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Linzess by this doctor in 2024.
ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Synthroid by this doctor in 2024.
Amgen Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ENBREL as an associated drug or biological on 9330 records involving 2094 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Enbrel by this doctor in 2024.
Amgen Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PROLIA as an associated drug or biological on 20867 records involving 11744 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Prolia 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 70 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 37 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 15 claims for Trulicity by this doctor in 2024.
Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 75 claims for Ozempic by this doctor in 2024.
Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 30 claims for Rybelsus by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
Payment overview · 2025
19 reported records · 8 companies
Separate record types
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?
| Reported company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| Enterra Medical, Inc. | Unresolved — no canonical attribution shown | $184.43 | 30.8% | 1 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $141.56 | 23.6% | 7 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $118.56 | 19.8% | 5 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $57.04 | 9.5% | 2 | 2025 |
| Supernus Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $27.06 | 4.5% | 1 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $26.32 | 4.4% | 1 | 2025 |
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $23.24 | 3.9% | 1 | 2025 |
| Bayer Healthcare Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $20.67 | 3.5% | 1 | 2025 |
What were the payments for?
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $598.88 | 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
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $104.59 | 4 | 2025 |
Source payment records
|
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| EVENITY Normalized: evenity |
Biological | Amgen Inc. | $59.27 | 5 | 2025 |
Source payment records
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| PROLIA Normalized: prolia |
Biological | Amgen Inc. | $59.27 | 5 | 2025 |
Source payment records
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| Rybelsus Normalized: rybelsus |
Drug | Novo Nordisk Inc | $54.77 | 2 | 2025 |
Source payment records
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| MOUNJARO Normalized: mounjaro |
Drug | Lilly USA, LLC | $29.50 | 1 | 2025 |
Source payment records
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| ZEPBOUND Normalized: zepbound |
Drug | Lilly USA, LLC | $29.50 | 1 | 2025 |
Source payment records
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| Qelbree Normalized: qelbree |
Drug | Supernus Pharmaceuticals, Inc. | $27.06 | 1 | 2025 |
Source payment records
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| VRAYLAR Normalized: vraylar |
Drug | ABBVIE INC. | $26.32 | 1 | 2025 |
Source payment records
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| CAPVAXIVE Normalized: capvaxive |
Biological | Merck Sharp & Dohme LLC | $23.24 | 1 | 2025 |
Source payment records
|
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| GARDASIL 9 Normalized: gardasil 9 |
Biological | Merck Sharp & Dohme LLC | $23.24 | 1 | 2025 |
Source payment records
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| VAXNEUVANCE Normalized: vaxneuvance |
Biological | Merck Sharp & Dohme LLC | $23.24 | 1 | 2025 |
Source payment records
|
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| Kerendia Normalized: kerendia |
Drug | Bayer Healthcare Pharmaceuticals Inc. | $20.67 | 1 | 2025 |
Source payment records
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| OTEZLA Normalized: otezla |
Drug | Amgen Inc. | $17.29 | 1 | 2025 |
Source payment records
|
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| REPATHA Normalized: repatha |
Biological | Amgen Inc. | $17.29 | 1 | 2025 |
Source payment records
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| Wegovy Normalized: wegovy |
Drug | Novo Nordisk Inc | $13.97 | 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.
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| MOUNJARO mounjaro |
2025 | Mounjaro | 2024 | 37 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Ozempic ozempic |
2025 | Ozempic | 2024 | 75 | exact normalized | Medicare Part D |
| PROLIA prolia |
2025 | Prolia | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Rybelsus rybelsus |
2025 | Rybelsus | 2024 | 30 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
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 |
|---|---|---|---|---|---|---|
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | LINZESS open payments reported associated product |
CMS Open Payments — General Payments 87954 supporting records · 21815 recipient NPIs · example record 1201352608 |
Linzess · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | SYNTHROID open payments reported associated product |
CMS Open Payments — General Payments 10655 supporting records · 4881 recipient NPIs · example record 1201352636 |
Synthroid · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
| Amgen Inc. Exact reporting entity; no affiliate inference |
2025 | ENBREL open payments reported associated product |
CMS Open Payments — General Payments 9330 supporting records · 2094 recipient NPIs · example record 1226877474 |
Enbrel · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| Amgen Inc. Exact reporting entity; no affiliate inference |
2025 | PROLIA open payments reported associated product |
CMS Open Payments — General Payments 20867 supporting records · 11744 recipient NPIs · example record 1226874448 |
Prolia · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| 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 |
70 | 19 |
| 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 |
37 | 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 |
15 | suppressed by CMS |
| Novo Nordisk Inc Exact reporting entity; no affiliate inference |
2025 | Ozempic open payments reported associated product |
CMS Open Payments — General Payments 261625 supporting records · 77793 recipient NPIs · example record 1188130076 |
Ozempic · 2024 Exact normalized brand match · 1 Part D row |
75 | 11 |
| Novo Nordisk Inc Exact reporting entity; no affiliate inference |
2025 | Rybelsus open payments reported associated product |
CMS Open Payments — General Payments 161257 supporting records · 55409 recipient NPIs · example record 1188130076 |
Rybelsus · 2024 Exact normalized brand match · 1 Part D row |
30 | 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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 518 | 140 |
| Levothyroxine Sodium | Levothyroxine Sodium | 453 | 112 |
| Amlodipine Besylate | Amlodipine Besylate | 284 | 82 |
| Metformin Hcl | Metformin Hcl | 185 | 55 |
| Omeprazole | Omeprazole | 163 | 58 |
| Gabapentin | Gabapentin | 157 | 48 |
| Losartan Potassium | Losartan Potassium | 156 | 47 |
| Furosemide | Furosemide | 143 | 36 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 139 | 18 |
| Trazodone Hcl | Trazodone Hcl | 138 | 35 |
| Meloxicam | Meloxicam | 137 | 33 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 131 | 40 |
| Metoprolol Succinate | Metoprolol Succinate | 114 | 32 |
| Lisinopril | Lisinopril | 106 | 33 |
| Simvastatin | Simvastatin | 103 | 22 |
| Sertraline Hcl | Sertraline Hcl | 100 | 29 |
| Pantoprazole Sodium | Pantoprazole Sodium | 95 | 27 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 88 | 35 |
| Alprazolam | Alprazolam | 83 | 22 |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 78 | 17 |
| Alendronate Sodium | Alendronate Sodium | 76 | 21 |
| Ozempic | Semaglutide | 75 | 11 |
| Jardiance | Empagliflozin | 70 | 19 |
| Mirtazapine | Mirtazapine | 70 | 17 |
| Atenolol | Atenolol | 69 | 16 |
| Lorazepam | Lorazepam | 69 | 18 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 65 | 17 |
| Metoprolol Tartrate | Metoprolol Tartrate | 65 | 17 |
| Allopurinol | Allopurinol | 60 | 12 |
| Hydrochlorothiazide | Hydrochlorothiazide | 58 | 16 |
| Tamsulosin Hcl | Tamsulosin Hcl | 58 | 13 |
| Eliquis | Apixaban | 57 | 14 |
| Spironolactone | Spironolactone | 55 | 16 |
| Escitalopram Oxalate | Escitalopram Oxalate | 54 | 13 |
| Zolpidem Tartrate | Zolpidem Tartrate | 54 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 53 | suppressed |
| Metformin Hcl Er | Metformin Hcl | 53 | 15 |
| Hydralazine Hcl | Hydralazine Hcl | 52 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 51 | 13 |
| Breo Ellipta | Fluticasone/Vilanterol | 49 | 11 |
| Estradiol | Estradiol | 46 | 16 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 46 | suppressed |
| Azithromycin | Azithromycin | 45 | 41 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 43 | suppressed |
| Clonazepam | Clonazepam | 42 | suppressed |
| Fenofibrate | Fenofibrate Nanocrystallized | 40 | 13 |
| Carvedilol | Carvedilol | 39 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 39 | suppressed |
| Glimepiride | Glimepiride | 37 | suppressed |
| Mounjaro | Tirzepatide | 37 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 37 | 14 |
| Amlodipine-Valsartan | Amlodipine Besylate/Valsartan | 35 | 11 |
| Memantine Hcl | Memantine Hcl | 35 | suppressed |
| Celecoxib | Celecoxib | 34 | suppressed |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 33 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 33 | 25 |
| Fluticasone Propionate | Fluticasone Propionate | 31 | 16 |
| Quetiapine Fumarate | Quetiapine Fumarate | 31 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 30 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 30 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 30 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 30 | suppressed |
| Rybelsus | Semaglutide | 30 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 30 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 30 | 11 |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 30 | 11 |
| Finasteride | Finasteride | 29 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 29 | suppressed |
| Valsartan | Valsartan | 29 | suppressed |
| Famotidine | Famotidine | 28 | 11 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 28 | suppressed |
| Potassium Chloride | Potassium Chloride | 27 | 11 |
| Sumatriptan Succinate | Sumatriptan Succinate | 27 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 26 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 26 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 26 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 25 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 25 | suppressed |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 25 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 25 | suppressed |
| Ibuprofen | Ibuprofen | 24 | suppressed |
| Tramadol Hcl Er | Tramadol Hcl | 24 | suppressed |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 23 | 12 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 23 | suppressed |
| Pregabalin | Pregabalin | 23 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 22 | suppressed |
| Diazepam | Diazepam | 21 | suppressed |
| Lamotrigine | Lamotrigine | 21 | suppressed |
| Temazepam | Temazepam | 21 | suppressed |
| Ipratropium Bromide | Ipratropium Bromide | 19 | suppressed |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 19 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 19 | suppressed |
| Prednisone | Prednisone | 19 | suppressed |
| Doxycycline Hyclate | Doxycycline Hyclate | 18 | 17 |
| Incruse Ellipta | Umeclidinium Bromide | 18 | suppressed |
| Nifedipine Er | Nifedipine | 18 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 18 | suppressed |
| Synthroid | Levothyroxine Sodium | 18 | suppressed |
| Azelastine Hcl | Azelastine Hcl | 17 | suppressed |
| Bupropion Xl | Bupropion Hcl | 17 | suppressed |
| Progesterone | Progesterone, Micronized | 17 | suppressed |
| Benazepril-Hydrochlorothiazide | Benazepril/Hydrochlorothiazide | 16 | suppressed |
| Cephalexin | Cephalexin | 16 | 15 |
| Doxazosin Mesylate | Doxazosin Mesylate | 16 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 16 | suppressed |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 16 | 11 |
| Ondansetron Hcl | Ondansetron Hcl | 16 | suppressed |
| Paxlovid | Nirmatrelvir/Ritonavir | 16 | 16 |
| Terazosin Hcl | Terazosin Hcl | 16 | suppressed |
| Tolterodine Tartrate Er | Tolterodine Tartrate | 16 | suppressed |
| Acyclovir | Acyclovir | 15 | suppressed |
| Amoxicillin | Amoxicillin | 15 | 11 |
| Ezetimibe | Ezetimibe | 15 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 15 | suppressed |
| Tresiba Flextouch U-200 | Insulin Degludec | 15 | suppressed |
| Trulicity | Dulaglutide | 15 | suppressed |
| Amlodipine-Olmesartan | Amlodipine Bes/Olmesartan Med | 14 | suppressed |
| Digoxin | Digoxin | 14 | suppressed |
| Silver Sulfadiazine | Silver Sulfadiazine | 14 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 13 | 12 |
| Enbrel | Etanercept | 13 | suppressed |
| Entresto | Sacubitril/Valsartan | 13 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 13 | suppressed |
| Linzess | Linaclotide | 13 | suppressed |
| Prolia | Denosumab | 13 | suppressed |
| Tresiba Flextouch U-100 | Insulin Degludec | 13 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 12 | suppressed |
| Carbamazepine | Carbamazepine | 12 | suppressed |
| Diltiazem 24hr Er | Diltiazem Hcl | 12 | suppressed |
| Eszopiclone | Eszopiclone | 12 | suppressed |
| Oxycontin | Oxycodone Hcl | 12 | suppressed |
| Phenytoin Sodium Extended | Phenytoin Sodium Extended | 12 | suppressed |
| Primidone | Primidone | 12 | suppressed |
| Topiramate | Topiramate | 12 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 11 | suppressed |
| Cilostazol | Cilostazol | 11 | suppressed |
| Hydrocortisone | Hydrocortisone | 11 | suppressed |
| Janumet Xr | Sitagliptin Phos/Metformin Hcl | 11 | suppressed |
| Polymyxin B Sul-Trimethoprim | Polymyxin B Sulf/Trimethoprim | 11 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 11 | suppressed |
| Spiriva Handihaler | Tiotropium Bromide | 11 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 11 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 11 | suppressed |
Timeline
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 | $598.88 · 19 records | Enterra Medical, Inc. | CAPVAXIVE, EVENITY, GARDASIL 9, Kerendia, MOUNJARO, OTEZLA, Ozempic, PROLIA, Qelbree, REPATHA, Rybelsus, VAXNEUVANCE, VRAYLAR, Wegovy, ZEPBOUND | 9 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
| 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