Payment overview · 2025
General Payments
$1,219.30
18 reported records · 9 companies
Healthcare provider profile · identity verified
Alan Chang, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · EAST SETAUKET, NY · NPI 1649408675
Verified facts
What the public records show
CMS Open Payments records show Alan Chang, M.D. received $1,219.30 in general payments during 2025 across 18 reported records.
BETA BIONICS, INC. accounted for 30.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 11 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 |
|---|---|---|---|---|---|
| BETA BIONICS, INC. | Unresolved — no canonical attribution shown | $369.14 | 30.3% | 3 | 2025 |
| Medtronic, Inc. |
Medtronic, Inc. exact · evidence 2025-07-22 |
$225.73 | 18.5% | 3 | 2025 |
| Insulet Corporation | Unresolved — no canonical attribution shown | $225.37 | 18.5% | 3 | 2025 |
| Dexcom, Inc. | Unresolved — no canonical attribution shown | $172.08 | 14.1% | 4 | 2025 |
| Alexion Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $126.75 | 10.4% | 1 | 2025 |
| Tandem Diabetes Care, Inc. | Unresolved — no canonical attribution shown | $30.94 | 2.5% | 1 | 2025 |
| Ascendis Pharma Endocrinology Inc | Unresolved — no canonical attribution shown | $26.76 | 2.2% | 1 | 2025 |
| RECORDATI_RARE_DISEASES_INC. | Unresolved — no canonical attribution shown | $22.53 | 1.9% | 1 | 2025 |
| CeQur Corporation | Unresolved — no canonical attribution shown | $20.00 | 1.6% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $1,219.30 | 18 |
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 |
|---|---|---|---|---|---|
| iLet Bionic Pancreas Normalized: ilet bionic pancreas |
Device | BETA BIONICS, INC. | $369.14 | 3 | 2025 |
Source payment records
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| iLet Insulin Infusion Kit Contact Detach Normalized: ilet insulin infusion kit contact detach |
Device | BETA BIONICS, INC. | $369.14 | 3 | 2025 |
Source payment records
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| iLet Insulin Infusion Kit Inset Normalized: ilet insulin infusion kit inset |
Device | BETA BIONICS, INC. | $369.14 | 3 | 2025 |
Source payment records
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| MINIMED 780G Normalized: minimed 780g |
Device | Medtronic, Inc. | $225.73 | 3 | 2025 |
Source payment records
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| OMNIPOD Normalized: omnipod |
Device | Insulet Corporation | $225.37 | 3 | 2025 |
Source payment records
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| Dexcom G6 Transmitter Normalized: dexcom g6 transmitter |
Medical Supply | Dexcom, Inc. | $172.08 | 4 | 2025 |
Source payment records
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| STRENSIQ Normalized: strensiq |
Biological | Alexion Pharmaceuticals, Inc. | $126.75 | 1 | 2025 |
Source payment records
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| t:slim X2 Insulin Pump with Control-IQ Normalized: t slim x2 insulin pump with control iq |
Device | Tandem Diabetes Care, Inc. | $30.94 | 1 | 2025 |
Source payment records
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| Yorvipath Normalized: yorvipath |
Drug | Ascendis Pharma Endocrinology Inc | $26.76 | 1 | 2025 |
Source payment records
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| ISTURISA Normalized: isturisa |
Drug | RECORDATI_RARE_DISEASES_INC. | $22.53 | 1 | 2025 |
Source payment records
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| CeQur Simplicity Normalized: cequr simplicity |
Device | CeQur Corporation | $20.00 | 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 |
|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 345 | 90 |
| Ozempic | Semaglutide | 209 | 58 |
| Metformin Hcl Er | Metformin Hcl | 140 | 44 |
| Metformin Hcl | Metformin Hcl | 127 | 34 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 109 | 32 |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 98 | 44 |
| Mounjaro | Tirzepatide | 97 | 23 |
| Atorvastatin Calcium | Atorvastatin Calcium | 76 | 23 |
| Jardiance | Empagliflozin | 64 | 23 |
| Novolog Flexpen | Insulin Aspart | 42 | 20 |
| Farxiga | Dapagliflozin Propanediol | 41 | 13 |
| Glipizide | Glipizide | 36 | 18 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 34 | 13 |
| Tresiba Flextouch U-100 | Insulin Degludec | 33 | 11 |
| Tresiba Flextouch U-200 | Insulin Degludec | 32 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 31 | 14 |
| Humalog Kwikpen U-100 | Insulin Lispro | 29 | 11 |
| Synthroid | Levothyroxine Sodium | 28 | suppressed |
| Hydrocortisone | Hydrocortisone | 23 | suppressed |
| Glimepiride | Glimepiride | 22 | suppressed |
| Repaglinide | Repaglinide | 22 | suppressed |
| Testosterone Cypionate | Testosterone Cypionate | 22 | suppressed |
| Ultra-Fine Nano Pen Needle | Pen Needle, Diabetic | 20 | suppressed |
| Glipizide Er | Glipizide | 19 | suppressed |
| Liothyronine Sodium | Liothyronine Sodium | 19 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 17 | suppressed |
| Fenofibrate | Fenofibrate | 17 | suppressed |
| Omnipod 5 Dexg7g6 Pods (Gen 5) | Insulin Pump Cart,auto,bt,g6/7 | 16 | suppressed |
| Spironolactone | Spironolactone | 16 | suppressed |
| Humulin R U-500 Kwikpen | Insulin Regular, Human | 15 | suppressed |
| Alcohol Prep Pads | Alcohol Antiseptic Pads | 14 | suppressed |
| Amlodipine Besylate | Amlodipine Besylate | 14 | suppressed |
| Omnitrope | Somatropin | 14 | suppressed |
| Armour Thyroid | Thyroid,pork | 12 | suppressed |
| Fenofibrate | Fenofibrate Nanocrystallized | 12 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 12 | suppressed |
| Januvia | Sitagliptin Phosphate | 12 | suppressed |
| Testosterone | Testosterone | 12 | suppressed |
| Ultra-Fine Short Pen Needle | Pen Needle, Diabetic | 12 | suppressed |
| Fiasp Flextouch | Insulin Aspart (Niacinamide) | 11 | suppressed |
| Lisinopril | Lisinopril | 11 | suppressed |
| Lyumjev Kwikpen U-100 | Insulin Lispro-Aabc | 11 | suppressed |
| Methimazole | Methimazole | 11 | suppressed |
| Rybelsus | Semaglutide | 11 | suppressed |
| Toujeo Max Solostar | Insulin Glargine,hum.Rec.Anlog | 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 | $1,219.30 · 18 records | BETA BIONICS, INC. | CeQur Simplicity, Dexcom G6 Transmitter, ISTURISA, MINIMED 780G, OMNIPOD, STRENSIQ, Yorvipath, iLet Bionic Pancreas, iLet Insulin Infusion Kit Contact Detach, iLet Insulin Infusion Kit Inset, t:slim X2 Insulin Pump with Control-IQ | — | — |
| 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