Payment overview · 2025
General Payments
$79.83
4 reported records · 3 companies
Healthcare provider profile · identity verified
Peter Zigfrid Zadvinskis, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Rheumatology · GRAND RAPIDS, MI · NPI 1043381353
Verified facts
What the public records show
CMS Open Payments records show Peter Zigfrid Zadvinskis, M.D. received $79.83 in general payments during 2025 across 4 reported records.
ABBVIE INC. accounted for 53.5% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 5 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Enbrel, Otezla, Rinvoq.
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 RINVOQ as an associated drug or biological on 279238 records involving 34343 distinct recipient NPIs. Public Medicare Part D data also shows 42 claims for Rinvoq 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 65 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 OTEZLA as an associated drug or biological on 177267 records involving 48600 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Otezla 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 |
|---|---|---|---|---|---|
| ABBVIE INC. | Unresolved — no canonical attribution shown | $42.67 | 53.5% | 2 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $22.09 | 27.7% | 1 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $15.07 | 18.9% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $79.83 | 4 |
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 |
|---|---|---|---|---|---|
| RINVOQ Normalized: rinvoq |
Biological | ABBVIE INC. | $42.67 | 2 | 2025 |
Source payment records
|
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| SKYRIZI Normalized: skyrizi |
Biological | ABBVIE INC. | $22.69 | 1 | 2025 |
Source payment records
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| COSENTYX Normalized: cosentyx |
Drug | Novartis Pharmaceuticals Corporation | $22.09 | 1 | 2025 |
Source payment records
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| ENBREL Normalized: enbrel |
Biological | Amgen Inc. | $15.07 | 1 | 2025 |
Source payment records
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| OTEZLA Normalized: otezla |
Drug | Amgen Inc. | $15.07 | 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 |
|---|---|---|---|---|---|---|
| ENBREL enbrel |
2025 | Enbrel | 2024 | 65 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| OTEZLA otezla |
2025 | Otezla | 2024 | 21 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| RINVOQ rinvoq |
2025 | Rinvoq | 2024 | 42 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 |
|---|---|---|---|---|---|---|
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | RINVOQ open payments reported associated product |
CMS Open Payments — General Payments 279238 supporting records · 34343 recipient NPIs · example record 1201352600 |
Rinvoq · 2024 Exact normalized brand match · 1 Part D row |
42 | 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 |
65 | suppressed by CMS |
| Amgen Inc. Exact reporting entity; no affiliate inference |
2025 | OTEZLA open payments reported associated product |
CMS Open Payments — General Payments 177267 supporting records · 48600 recipient NPIs · example record 1226871616 |
Otezla · 2024 Exact normalized brand match · 1 Part D row |
21 | 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 | 921 | 268 |
| Methotrexate | Methotrexate Sodium | 771 | 205 |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 703 | 195 |
| Tramadol Hcl | Tramadol Hcl | 148 | 25 |
| Meloxicam | Meloxicam | 140 | 41 |
| Leflunomide | Leflunomide | 133 | 37 |
| Sulfasalazine | Sulfasalazine | 113 | 24 |
| Enbrel Sureclick | Etanercept | 107 | 13 |
| Folic Acid | Folic Acid | 93 | 33 |
| Humira(Cf) Pen | Adalimumab | 92 | 12 |
| Gabapentin | Gabapentin | 91 | 24 |
| Celecoxib | Celecoxib | 87 | 27 |
| Duloxetine Hcl | Duloxetine Hcl | 80 | 18 |
| Enbrel | Etanercept | 65 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 55 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 54 | 15 |
| Orencia Clickject | Abatacept | 45 | suppressed |
| Rinvoq | Upadacitinib | 42 | suppressed |
| Methylprednisolone | Methylprednisolone | 40 | 22 |
| Diclofenac Sodium | Diclofenac Sodium | 36 | 16 |
| Ibuprofen | Ibuprofen | 36 | suppressed |
| Humira Pen | Adalimumab | 35 | suppressed |
| Nabumetone | Nabumetone | 35 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 35 | 13 |
| Leucovorin Calcium | Leucovorin Calcium | 34 | 11 |
| Humira(Cf) | Adalimumab | 33 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 24 | suppressed |
| Xeljanz Xr | Tofacitinib Citrate | 24 | suppressed |
| Otezla | Apremilast | 21 | suppressed |
| Allopurinol | Allopurinol | 19 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 17 | suppressed |
| Etodolac | Etodolac | 16 | suppressed |
| Tramadol Hcl-Acetaminophen | Tramadol Hcl/Acetaminophen | 15 | suppressed |
| Insulin Syringe | Syringe And Needle,insulin,1ml | 14 | suppressed |
| Orencia | Abatacept | 14 | suppressed |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 13 | suppressed |
| Dexamethasone Sodium Phosphate | Dexamethasone Sodium Phosphate | 13 | suppressed |
| Gammagard Liquid | Immun Glob G(Igg)/Gly/Iga Ov50 | 13 | suppressed |
| Mycophenolate Mofetil | Mycophenolate Mofetil | 13 | suppressed |
| Omeprazole | Omeprazole | 13 | suppressed |
| Pilocarpine Hcl | Pilocarpine Hcl | 13 | suppressed |
| Azathioprine | Azathioprine | 12 | suppressed |
| Savella | Milnacipran Hcl | 12 | suppressed |
| Amlodipine Besylate | Amlodipine Besylate | 11 | suppressed |
| Colchicine | Colchicine | 11 | suppressed |
| Naproxen | Naproxen | 11 | suppressed |
| Rasuvo | Methotrexate/Pf | 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 | $79.83 · 4 records | ABBVIE INC. | COSENTYX, ENBREL, OTEZLA, RINVOQ, SKYRIZI | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Enbrel play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with ABBVIE 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