Payment overview · 2025
General Payments
$56,399.48
252 reported records · 18 companies
Healthcare provider profile · identity verified
Kenneth E Stark, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Rheumatology · TAVARES, FL · NPI 1558346262
Verified facts
What the public records show
CMS Open Payments records show Kenneth E Stark, M.D. received $56,399.48 in general payments during 2025 across 252 reported records.
Janssen Biotech, Inc. accounted for 29.1% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 24 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Kevzara, Kineret.
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.
GENZYME CORPORATION reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported KEVZARA as an associated drug or biological on 5840 records involving 2002 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Kevzara by this doctor in 2024.
SOBI, 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 Kineret as an associated drug or biological on 1818 records involving 1208 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Kineret 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 |
|---|---|---|---|---|---|
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $16,385.26 | 29.1% | 37 | 2025 |
| GENZYME CORPORATION | Unresolved — no canonical attribution shown | $16,362.59 | 29.0% | 26 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $15,359.22 | 27.2% | 61 | 2025 |
| UCB, Inc. | Unresolved — no canonical attribution shown | $6,433.41 | 11.4% | 30 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $366.13 | 0.7% | 18 | 2025 |
| Radius Health, Inc. | Unresolved — no canonical attribution shown | $264.61 | 0.5% | 9 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $243.97 | 0.4% | 12 | 2025 |
| Mallinckrodt Hospital Products Inc. | Unresolved — no canonical attribution shown | $213.38 | 0.4% | 12 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $169.88 | 0.3% | 19 | 2025 |
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $169.43 | 0.3% | 8 | 2025 |
| E.R. Squibb & Sons, L.L.C. | Unresolved — no canonical attribution shown | $158.77 | 0.3% | 6 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $76.72 | 0.1% | 4 | 2025 |
| ANI Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $47.82 | 0.1% | 3 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $47.28 | 0.1% | 2 | 2025 |
| SOBI, INC | Unresolved — no canonical attribution shown | $42.45 | 0.1% | 2 | 2025 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $22.90 | 0.0% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $21.28 | 0.0% | 1 | 2025 |
| Sandoz Inc. | Unresolved — no canonical attribution shown | $14.38 | 0.0% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $44,770.00 | 22 |
| Food and Beverage | $5,114.36 | 201 |
| Consulting Fee | $3,680.00 | 2 |
| Travel and Lodging | $2,835.12 | 27 |
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 |
|---|---|---|---|---|---|
| TREMFYA Normalized: tremfya |
Drug | Janssen Biotech, Inc. | $16,385.26 | 37 | 2025 |
Source payment records
|
|||||
| KEVZARA Normalized: kevzara |
Biological | GENZYME CORPORATION | $16,362.59 | 26 | 2025 |
Source payment records
|
|||||
| SIMPONI ARIA Normalized: simponi aria |
Biological | Janssen Biotech, Inc. | $16,058.07 | 25 | 2025 |
Source payment records
|
|||||
| EVENITY Normalized: evenity |
Biological | Amgen Inc. | $14,644.13 | 35 | 2025 |
Source payment records
|
|||||
| Bimzelx Normalized: bimzelx |
Biological | UCB, Inc. | $6,433.41 | 30 | 2025 |
Source payment records
|
|||||
| KRYSTEXXA Normalized: krystexxa |
Biological | Amgen Inc. | $441.09 | 12 | 2025 |
Source payment records
|
|||||
| RINVOQ Normalized: rinvoq |
Biological | ABBVIE INC. | $263.66 | 13 | 2025 |
Source payment records
|
|||||
| COSENTYX Normalized: cosentyx |
Drug | Novartis Pharmaceuticals Corporation | $243.97 | 12 | 2025 |
Source payment records
|
|||||
| ACTHAR Normalized: acthar |
Biological | Mallinckrodt Hospital Products Inc. | $213.38 | 12 | 2025 |
Source payment records
|
|||||
| OTEZLA Normalized: otezla |
Drug | Amgen Inc. | $209.69 | 10 | 2025 |
Source payment records
|
|||||
| XELJANZ Normalized: xeljanz |
Drug | PFIZER INC. | $169.88 | 19 | 2025 |
Source payment records
|
|||||
| ORENCIA Normalized: orencia |
Biological | E.R. Squibb & Sons, L.L.C. | $158.77 | 6 | 2025 |
Source payment records
|
|||||
| ZEPBOUND Normalized: zepbound |
Drug | Lilly USA, LLC | $145.62 | 7 | 2025 |
Source payment records
|
|||||
| TALTZ Normalized: taltz |
Drug | Lilly USA, LLC | $145.03 | 7 | 2025 |
Source payment records
|
|||||
| SKYRIZI Normalized: skyrizi |
Biological | ABBVIE INC. | $102.47 | 5 | 2025 |
Source payment records
|
|||||
| PROLIA Normalized: prolia |
Biological | Amgen Inc. | $90.59 | 5 | 2025 |
Source payment records
|
|||||
| BENLYSTA Normalized: benlysta |
Biological | GlaxoSmithKline, LLC. | $76.72 | 4 | 2025 |
Source payment records
|
|||||
| Actemra Normalized: actemra |
Biological | Genentech USA, Inc. | $47.28 | 2 | 2025 |
Source payment records
|
|||||
| Kineret Normalized: kineret |
Drug | SOBI, INC | $42.45 | 2 | 2025 |
Source payment records
|
|||||
| SOVUNA Normalized: sovuna |
Drug | ANI Pharmaceuticals, Inc. | $29.21 | 2 | 2025 |
Source payment records
|
|||||
| OCTAGAM IMMUNE GLOBULIN (HUMAN) Normalized: octagam immune globulin human |
Drug | PFIZER INC. | $26.22 | 1 | 2025 |
Source payment records
|
|||||
| SAPHNELO Normalized: saphnelo |
Biological | AstraZeneca Pharmaceuticals LP | $21.28 | 1 | 2025 |
Source payment records
|
|||||
| PURIFIED CORTROPHIN GEL Normalized: purified cortrophin gel |
Drug | ANI Pharmaceuticals, Inc. | $18.61 | 1 | 2025 |
Source payment records
|
|||||
| HYRIMOZ Normalized: hyrimoz |
Biological | Sandoz Inc. | $14.38 | 1 | 2025 |
Source payment records
|
|||||
* 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 |
|---|---|---|---|---|---|---|
| KEVZARA kevzara |
2025 | Kevzara | 2024 | 16 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Kineret kineret |
2025 | Kineret | 2024 | 13 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 |
|---|---|---|---|---|---|---|
| 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 |
| GENZYME CORPORATION Exact reporting entity; no affiliate inference |
2025 | KEVZARA open payments reported associated product |
CMS Open Payments — General Payments 5840 supporting records · 2002 recipient NPIs · example record 1233195032 |
Kevzara · 2024 Exact normalized brand match · 1 Part D row |
16 | suppressed by CMS |
| SOBI, INC Exact reporting entity; no affiliate inference |
2025 | Kineret open payments reported associated product |
CMS Open Payments — General Payments 1818 supporting records · 1208 recipient NPIs · example record 1240223689 |
Kineret · 2024 Exact normalized brand match · 1 Part D row |
13 | 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 |
|---|---|---|---|
| Prednisone | Prednisone | 337 | 117 |
| Methotrexate | Methotrexate Sodium | 321 | 107 |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 284 | 97 |
| Duloxetine Hcl | Duloxetine Hcl | 73 | 31 |
| Folic Acid | Folic Acid | 65 | 21 |
| Meloxicam | Meloxicam | 64 | 23 |
| Humira(Cf) Pen | Adalimumab | 54 | suppressed |
| Allopurinol | Allopurinol | 47 | 16 |
| Gabapentin | Gabapentin | 44 | 13 |
| Methylprednisolone | Methylprednisolone | 44 | 27 |
| Alendronate Sodium | Alendronate Sodium | 39 | 15 |
| Leucovorin Calcium | Leucovorin Calcium | 37 | 13 |
| Enbrel Sureclick | Etanercept | 34 | suppressed |
| Celecoxib | Celecoxib | 32 | 13 |
| Mycophenolate Mofetil | Mycophenolate Mofetil | 29 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 28 | 11 |
| Baclofen | Baclofen | 24 | suppressed |
| Sulfasalazine Dr | Sulfasalazine | 24 | 13 |
| Lidocaine | Lidocaine | 19 | 11 |
| Sulfasalazine | Sulfasalazine | 19 | suppressed |
| Xeljanz Xr | Tofacitinib Citrate | 17 | suppressed |
| Kevzara | Sarilumab | 16 | suppressed |
| Methotrexate Sodium | Methotrexate Sodium/Pf | 15 | suppressed |
| Enbrel | Etanercept | 13 | suppressed |
| Ibuprofen | Ibuprofen | 13 | suppressed |
| Kineret | Anakinra | 13 | suppressed |
| Leflunomide | Leflunomide | 13 | suppressed |
| Humira(Cf) | Adalimumab | 12 | suppressed |
| Cimzia (2 Pack) | Certolizumab Pegol | 11 | suppressed |
| Venlafaxine Hcl | Venlafaxine 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 | $56,399.48 · 252 records | Janssen Biotech, Inc. | ACTHAR, Actemra, BENLYSTA, Bimzelx, COSENTYX, EVENITY, HYRIMOZ, KEVZARA, KRYSTEXXA, Kineret, OCTAGAM IMMUNE GLOBULIN (HUMAN), ORENCIA, OTEZLA, PROLIA, PURIFIED CORTROPHIN GEL, RINVOQ, SAPHNELO, SIMPONI ARIA, SKYRIZI, SOVUNA, TALTZ, TREMFYA, XELJANZ, ZEPBOUND | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Kevzara play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with Amgen 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