Payment overview · 2025
General Payments
$526.47
6 reported records · 5 companies
Healthcare provider profile · identity verified
Edward C Chang, MD
Allopathic & Osteopathic Physicians|Internal Medicine · MILWAUKEE, WI · NPI 1669461141
Verified facts
What the public records show
CMS Open Payments records show Edward C Chang, MD received $526.47 in general payments during 2025 across 6 reported records.
AstraZeneca Pharmaceuticals LP accounted for 44.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 6 associated products.
Astellas Pharma US 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 Myrbetriq as an associated drug or biological on 16 records involving 16 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Myrbetriq by this doctor in 2024.
AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYMBICORT as an associated drug or biological on 71 records involving 51 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Symbicort 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 |
|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $231.86 | 44.0% | 2 | 2025 |
| Aimmune Therapeutics, Inc. | Unresolved — no canonical attribution shown | $124.97 | 23.7% | 1 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $124.95 | 23.7% | 1 | 2025 |
| Dynavax Technologies Corporation | Unresolved — no canonical attribution shown | $27.16 | 5.2% | 1 | 2025 |
| Astellas Pharma US Inc | Unresolved — no canonical attribution shown | $17.53 | 3.3% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $526.47 | 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 |
|---|---|---|---|---|---|
| ZENPEP Normalized: zenpep |
Drug | Aimmune Therapeutics, Inc. | $124.97 | 1 | 2025 |
Source payment records
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| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $124.95 | 1 | 2025 |
Source payment records
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| AIRSUPRA Normalized: airsupra |
Drug | AstraZeneca Pharmaceuticals LP | $121.83 | 1 | 2025 |
Source payment records
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| BREZTRI Normalized: breztri |
Drug | AstraZeneca Pharmaceuticals LP | $110.03 | 1 | 2025 |
Source payment records
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| Heplisav-B Normalized: heplisav b |
Drug | Dynavax Technologies Corporation | $27.16 | 1 | 2025 |
Source payment records
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| Vyloy Normalized: vyloy |
Drug | Astellas Pharma US Inc | $17.53 | 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.
| Paying company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| Astellas Pharma US Inc Exact reporting entity; no affiliate inference |
2025 | Myrbetriq open payments reported associated product |
CMS Open Payments — General Payments 16 supporting records · 16 recipient NPIs · example record 1238599014 |
Myrbetriq · 2024 Exact normalized brand match · 1 Part D row |
14 | suppressed by CMS |
| AstraZeneca Pharmaceuticals LP Exact reporting entity; no affiliate inference |
2025 | SYMBICORT open payments reported associated product |
CMS Open Payments — General Payments 71 supporting records · 51 recipient NPIs · example record 1206132610 |
Symbicort · 2024 Exact normalized brand match · 1 Part D row |
16 | 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 |
|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 404 | 99 |
| Losartan Potassium | Losartan Potassium | 190 | 55 |
| Levothyroxine Sodium | Levothyroxine Sodium | 172 | 44 |
| Amlodipine Besylate | Amlodipine Besylate | 168 | 43 |
| Metoprolol Succinate | Metoprolol Succinate | 167 | 45 |
| Omeprazole | Omeprazole | 150 | 39 |
| Lisinopril | Lisinopril | 126 | 35 |
| Pravastatin Sodium | Pravastatin Sodium | 123 | 33 |
| Metformin Hcl | Metformin Hcl | 115 | 29 |
| Carvedilol | Carvedilol | 109 | 22 |
| Tamsulosin Hcl | Tamsulosin Hcl | 104 | 28 |
| Pantoprazole Sodium | Pantoprazole Sodium | 102 | 33 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 93 | 25 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 87 | 26 |
| Gabapentin | Gabapentin | 84 | 21 |
| Clopidogrel | Clopidogrel Bisulfate | 77 | 18 |
| Furosemide | Furosemide | 73 | 25 |
| Zolpidem Tartrate | Zolpidem Tartrate | 73 | 24 |
| Eliquis | Apixaban | 69 | 15 |
| Metformin Hcl Er | Metformin Hcl | 67 | 24 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 57 | 16 |
| Hydrochlorothiazide | Hydrochlorothiazide | 52 | 16 |
| Donepezil Hcl | Donepezil Hcl | 49 | suppressed |
| Finasteride | Finasteride | 46 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 45 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 40 | 11 |
| Metoprolol Tartrate | Metoprolol Tartrate | 38 | 12 |
| Spironolactone | Spironolactone | 38 | 12 |
| Trazodone Hcl | Trazodone Hcl | 37 | suppressed |
| Allopurinol | Allopurinol | 36 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 34 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 33 | 14 |
| Tradjenta | Linagliptin | 33 | suppressed |
| Glipizide | Glipizide | 31 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 31 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 30 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 30 | 12 |
| Lidocaine | Lidocaine | 30 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 30 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 29 | suppressed |
| Januvia | Sitagliptin Phosphate | 26 | suppressed |
| Ezetimibe | Ezetimibe | 25 | suppressed |
| Prednisone | Prednisone | 25 | 11 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 25 | 15 |
| Valsartan | Valsartan | 24 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 23 | suppressed |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 23 | suppressed |
| Simvastatin | Simvastatin | 23 | suppressed |
| Combivent Respimat | Ipratropium/Albuterol Sulfate | 22 | suppressed |
| Fluticasone Propionate | Fluticasone Propionate | 22 | suppressed |
| Memantine Hcl | Memantine Hcl | 22 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 22 | suppressed |
| Potassium Chloride | Potassium Chloride | 21 | suppressed |
| Alprazolam | Alprazolam | 20 | suppressed |
| Calcitonin-Salmon | Calcitonin,salmon,synthetic | 20 | suppressed |
| Atenolol | Atenolol | 19 | suppressed |
| Baclofen | Baclofen | 19 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 19 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 19 | suppressed |
| Linzess | Linaclotide | 19 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 19 | suppressed |
| Breztri Aerosphere | Budesonide/Glycopyr/Formoterol | 18 | suppressed |
| Ibuprofen | Ibuprofen | 18 | 14 |
| Lovastatin | Lovastatin | 18 | suppressed |
| Nystatin | Nystatin | 18 | 11 |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 18 | suppressed |
| Jardiance | Empagliflozin | 17 | suppressed |
| Xarelto | Rivaroxaban | 17 | suppressed |
| Pregabalin | Pregabalin | 16 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 16 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 16 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 15 | suppressed |
| Meloxicam | Meloxicam | 15 | suppressed |
| Ventolin Hfa | Albuterol Sulfate | 15 | suppressed |
| Alcohol Pads | Alcohol Antiseptic Pads | 14 | suppressed |
| Aripiprazole | Aripiprazole | 14 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 14 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 14 | 12 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 14 | suppressed |
| Myrbetriq | Mirabegron | 14 | suppressed |
| Olmesartan-Hydrochlorothiazide | Olmesartan/Hydrochlorothiazide | 14 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 14 | suppressed |
| Shingrix | Varicella-Zoster Ge/As01b/Pf | 14 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 14 | suppressed |
| Estradiol | Estradiol | 13 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 13 | suppressed |
| Gemfibrozil | Gemfibrozil | 13 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 13 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 13 | suppressed |
| Methimazole | Methimazole | 13 | suppressed |
| Solifenacin Succinate | Solifenacin Succinate | 13 | suppressed |
| Terazosin Hcl | Terazosin Hcl | 13 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 12 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 12 | 11 |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 12 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 12 | suppressed |
| Advair Diskus | Fluticasone Propion/Salmeterol | 11 | suppressed |
| Amoxicillin | Amoxicillin | 11 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 11 | suppressed |
| Glimepiride | Glimepiride | 11 | suppressed |
| Lubiprostone | Lubiprostone | 11 | suppressed |
| Mirtazapine | Mirtazapine | 11 | suppressed |
| Nebivolol Hcl | Nebivolol Hcl | 11 | suppressed |
| Omega-3 Acid Ethyl Esters | Omega-3 Acid Ethyl Esters | 11 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 11 | suppressed |
| Potassium Citrate Er | Potassium Citrate | 11 | suppressed |
| Synjardy | Empagliflozin/Metformin Hcl | 11 | suppressed |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 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 | $526.47 · 6 records | AstraZeneca Pharmaceuticals LP | AIRSUPRA, BREZTRI, Heplisav-B, Ozempic, Vyloy, ZENPEP | 2 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- How do you evaluate evidence when you have a financial relationship with Astellas Pharma US Inc?
- 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