Payment overview · 2025
General Payments
$1,421.11
32 reported records · 18 companies
Healthcare provider profile · identity verified
Mark Chen, DO
Allopathic & Osteopathic Physicians|Family Medicine · LAS VEGAS, NV · NPI 1942838826
Verified facts
What the public records show
CMS Open Payments records show Mark Chen, DO received $1,421.11 in general payments during 2025 across 32 reported records.
Kerecis Limited accounted for 20.1% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 20 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga.
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 FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Farxiga 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 |
|---|---|---|---|---|---|
| Kerecis Limited | Unresolved — no canonical attribution shown | $285.24 | 20.1% | 3 | 2025 |
| Smith+Nephew, Inc. | Unresolved — no canonical attribution shown | $205.70 | 14.5% | 7 | 2025 |
| LifeNet Health | Unresolved — no canonical attribution shown | $177.08 | 12.5% | 1 | 2025 |
| MIMEDX Group, Inc. | Unresolved — no canonical attribution shown | $172.49 | 12.1% | 2 | 2025 |
| Gilead Sciences, Inc. | Unresolved — no canonical attribution shown | $119.30 | 8.4% | 4 | 2025 |
| Ascensia Diabetes Care Us Inc. | Unresolved — no canonical attribution shown | $74.64 | 5.2% | 1 | 2025 |
| Bayer Healthcare Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $65.92 | 4.6% | 1 | 2025 |
| Janssen Pharmaceuticals, Inc | Unresolved — no canonical attribution shown | $57.18 | 4.0% | 2 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $54.47 | 3.8% | 2 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $45.94 | 3.2% | 1 | 2025 |
| Radius Health, Inc. | Unresolved — no canonical attribution shown | $37.87 | 2.7% | 1 | 2025 |
| SANOFI-AVENTIS U.S. LLC | Unresolved — no canonical attribution shown | $30.76 | 2.2% | 1 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $24.92 | 1.8% | 1 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $17.56 | 1.2% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $16.12 | 1.1% | 1 | 2025 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $15.81 | 1.1% | 1 | 2025 |
| Azurity Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $13.92 | 1.0% | 1 | 2025 |
| MAYNE PHARMA COMMERCIAL LLC | Unresolved — no canonical attribution shown | $6.19 | 0.4% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $1,421.11 | 32 |
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 |
|---|---|---|---|---|---|
| Kerecis GraftGuide Normalized: kerecis graftguide |
Device | Kerecis Limited | $285.24 | 3 | 2025 |
Source payment records
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| Kerecis SurgiClose Normalized: kerecis surgiclose |
Device | Kerecis Limited | $285.24 | 3 | 2025 |
Source payment records
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| COLLAGENASE SANTYL Normalized: collagenase santyl |
Drug | Smith+Nephew, Inc. | $205.70 | 7 | 2025 |
Source payment records
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| TheraGenesis Wound Matrix Normalized: theragenesis wound matrix |
Device | LifeNet Health | $177.08 | 1 | 2025 |
Source payment records
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| Kerendia Normalized: kerendia |
Drug | Bayer Healthcare Pharmaceuticals Inc. | $65.92 | 1 | 2025 |
Source payment records
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| SPRAVATO Normalized: spravato |
Drug | Janssen Pharmaceuticals, Inc | $57.18 | 2 | 2025 |
Source payment records
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| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $45.94 | 1 | 2025 |
Source payment records
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $45.94 | 1 | 2025 |
Source payment records
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| Tymlos Normalized: tymlos |
Drug | Radius Health, Inc. | $37.87 | 1 | 2025 |
Source payment records
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| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $31.04 | 1 | 2025 |
Source payment records
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| Rybelsus Normalized: rybelsus |
Drug | Novo Nordisk Inc | $31.04 | 1 | 2025 |
Source payment records
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| TZIELD Normalized: tzield |
Biological | SANOFI-AVENTIS U.S. LLC | $30.76 | 1 | 2025 |
Source payment records
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| Repatha Normalized: repatha |
Biological | Amgen Inc. | $24.92 | 1 | 2025 |
Source payment records
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| Wegovy Normalized: wegovy |
Drug | Novo Nordisk Inc | $23.43 | 1 | 2025 |
Source payment records
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| MOUNJARO Normalized: mounjaro |
Drug | Lilly USA, LLC | $17.56 | 1 | 2025 |
Source payment records
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| ZEPBOUND Normalized: zepbound |
Drug | Lilly USA, LLC | $17.56 | 1 | 2025 |
Source payment records
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| FARXIGA Normalized: farxiga |
Drug | AstraZeneca Pharmaceuticals LP | $16.12 | 1 | 2025 |
Source payment records
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| JARDIANCE Normalized: jardiance |
Drug | Boehringer Ingelheim Pharmaceuticals, Inc. | $15.81 | 1 | 2025 |
Source payment records
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| REGRANEX Normalized: regranex |
Drug | Smith+Nephew, Inc. | $14.87 | 1 | 2025 |
Source payment records
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| EDARBYCLOR Normalized: edarbyclor |
Drug | Azurity Pharmaceuticals, Inc. | $13.92 | 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 |
|---|---|---|---|---|---|---|
| FARXIGA farxiga |
2025 | Farxiga | 2024 | 39 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
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 |
|---|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP Exact reporting entity; no affiliate inference |
2025 | FARXIGA open payments reported associated product |
CMS Open Payments — General Payments 106133 supporting records · 42906 recipient NPIs · example record 1206131362 |
Farxiga · 2024 Exact normalized brand match · 1 Part D row |
39 | 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 | 50 | 26 |
| Farxiga | Dapagliflozin Propanediol | 39 | suppressed |
| Amlodipine Besylate | Amlodipine Besylate | 30 | 15 |
| Metformin Hcl | Metformin Hcl | 27 | 12 |
| Santyl | Collagenase Clostridium Hist. | 22 | suppressed |
| Eliquis | Apixaban | 20 | suppressed |
| Losartan Potassium | Losartan Potassium | 20 | 11 |
| Fluticasone Propionate | Fluticasone Propionate | 19 | 12 |
| Levothyroxine Sodium | Levothyroxine Sodium | 18 | suppressed |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 17 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 15 | suppressed |
| Carvedilol | Carvedilol | 14 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 14 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 13 | 13 |
| Clopidogrel | Clopidogrel Bisulfate | 13 | suppressed |
| Famotidine | Famotidine | 13 | suppressed |
| Gentamicin Sulfate | Gentamicin Sulfate | 13 | suppressed |
| Hydrochlorothiazide | Hydrochlorothiazide | 13 | suppressed |
| Mupirocin | Mupirocin | 13 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 13 | suppressed |
| Lisinopril | Lisinopril | 12 | suppressed |
| Nifedipine Er | Nifedipine | 12 | suppressed |
| Furosemide | Furosemide | 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 | $1,421.11 · 32 records | Kerecis Limited | COLLAGENASE SANTYL, EDARBYCLOR, FARXIGA, JARDIANCE, Kerecis GraftGuide, Kerecis SurgiClose, Kerendia, MOUNJARO, Ozempic, QULIPTA, REGRANEX, Repatha, Rybelsus, SPRAVATO, TZIELD, TheraGenesis Wound Matrix, Tymlos, UBRELVY, Wegovy, ZEPBOUND | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Farxiga play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with AstraZeneca Pharmaceuticals LP?
- 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