Payment overview · 2025
General Payments
$1,079.05
44 reported records · 19 companies
Healthcare provider profile · identity verified
Brian Vikstrom, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · VACAVILLE, CA · NPI 1285730820
Verified facts
What the public records show
CMS Open Payments records show Brian Vikstrom, M.D. received $1,079.05 in general payments during 2025 across 44 reported records.
Merck Sharp & Dohme LLC accounted for 13.7% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 34 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Imbruvica, Xtandi.
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 IMBRUVICA as an associated drug or biological on 15599 records involving 6881 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Imbruvica by this doctor in 2024.
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 VENCLEXTA as an associated drug or biological on 10417 records involving 4944 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Venclexta by this doctor in 2024.
ARRAY BIOPHARMA 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 IBRANCE as an associated drug or biological on 54 records involving 52 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Ibrance by this doctor in 2024.
ARRAY BIOPHARMA 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 XTANDI as an associated drug or biological on 98 records involving 88 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Xtandi 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 LYNPARZA as an associated drug or biological on 9531 records involving 5030 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Lynparza by this doctor in 2024.
Celgene 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 ELIQUIS as an associated drug or biological on 25 records involving 24 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Eliquis by this doctor in 2024.
E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Eliquis by this doctor in 2024.
Merck Sharp & Dohme LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LYNPARZA as an associated drug or biological on 10903 records involving 6595 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Lynparza by this doctor in 2024.
PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Eliquis by this doctor in 2024.
PFIZER 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 IBRANCE as an associated drug or biological on 11505 records involving 4934 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Ibrance by this doctor in 2024.
PFIZER 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 XTANDI as an associated drug or biological on 19368 records involving 7657 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Xtandi 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 |
|---|---|---|---|---|---|
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $147.45 | 13.7% | 5 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $104.29 | 9.7% | 5 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $96.05 | 8.9% | 5 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $95.66 | 8.9% | 5 | 2025 |
| Celgene Corporation | Unresolved — no canonical attribution shown | $92.10 | 8.5% | 3 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $65.05 | 6.0% | 3 | 2025 |
| BeOne Medicines USA, Inc. | Unresolved — no canonical attribution shown | $62.18 | 5.8% | 2 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $57.97 | 5.4% | 2 | 2025 |
| Daiichi Sankyo Inc. | Unresolved — no canonical attribution shown | $53.12 | 4.9% | 2 | 2025 |
| ARRAY BIOPHARMA INC | Unresolved — no canonical attribution shown | $52.15 | 4.8% | 2 | 2025 |
| Eisai Inc. | Unresolved — no canonical attribution shown | $46.49 | 4.3% | 2 | 2025 |
| Deciphera Pharmaceuticals Inc. | Unresolved — no canonical attribution shown | $35.48 | 3.3% | 1 | 2025 |
| BeiGene USA, Inc. | Unresolved — no canonical attribution shown | $29.88 | 2.8% | 1 | 2025 |
| E.R. Squibb & Sons, L.L.C. | Unresolved — no canonical attribution shown | $26.16 | 2.4% | 1 | 2025 |
| Incyte Corporation | Unresolved — no canonical attribution shown | $25.47 | 2.4% | 1 | 2025 |
| Ipsen Biopharmaceuticals, Inc | Unresolved — no canonical attribution shown | $24.18 | 2.2% | 1 | 2025 |
| SERVIER PHARMACEUTICALS LLC | Unresolved — no canonical attribution shown | $23.74 | 2.2% | 1 | 2025 |
| Gilead Sciences, Inc. | Unresolved — no canonical attribution shown | $22.79 | 2.1% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $18.84 | 1.8% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $1,079.05 | 44 |
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 |
|---|---|---|---|---|---|
| KEYTRUDA Normalized: keytruda |
Biological | Merck Sharp & Dohme LLC | $147.45 | 5 | 2025 |
Source payment records
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| REBLOZYL Normalized: reblozyl |
Biological | Celgene Corporation | $92.10 | 3 | 2025 |
Source payment records
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| TEVIMBRA Normalized: tevimbra |
Drug | BeOne Medicines USA, Inc., BeiGene USA, Inc. | $92.06 | 3 | 2025 |
Source payment records
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| EPKINLY Normalized: epkinly |
Drug | ABBVIE INC. | $65.05 | 3 | 2025 |
Source payment records
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| IMBRUVICA Normalized: imbruvica |
Drug | ABBVIE INC. | $65.05 | 3 | 2025 |
Source payment records
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| ICLUSIG Normalized: iclusig |
Drug | Takeda Pharmaceuticals U.S.A., Inc. | $60.64 | 3 | 2025 |
Source payment records
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| ELREXFIO Normalized: elrexfio |
Drug | PFIZER INC. | $58.51 | 3 | 2025 |
Source payment records
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| OJJAARA Normalized: ojjaara |
Drug | GlaxoSmithKline, LLC. | $57.97 | 2 | 2025 |
Source payment records
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| BRAFTOVI Normalized: braftovi |
Drug | ARRAY BIOPHARMA INC | $52.15 | 2 | 2025 |
Source payment records
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| MEKTOVI Normalized: mektovi |
Drug | ARRAY BIOPHARMA INC | $52.15 | 2 | 2025 |
Source payment records
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| Lenvima Normalized: lenvima |
Drug | Eisai Inc. | $46.49 | 2 | 2025 |
Source payment records
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| SCEMBLIX Normalized: scemblix |
Drug | Novartis Pharmaceuticals Corporation | $44.29 | 2 | 2025 |
Source payment records
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| ADCETRIS Normalized: adcetris |
Biological | PFIZER INC. | $36.88 | 2 | 2025 |
Source payment records
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| PADCEV Normalized: padcev |
Biological | PFIZER INC. | $36.05 | 1 | 2025 |
Source payment records
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| KISQALI Normalized: kisqali |
Drug | Novartis Pharmaceuticals Corporation | $35.88 | 2 | 2025 |
Source payment records
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| QINLOCK Normalized: qinlock |
Drug | Deciphera Pharmaceuticals Inc. | $35.48 | 1 | 2025 |
Source payment records
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| ROMVIMZA Normalized: romvimza |
Drug | Deciphera Pharmaceuticals Inc. | $35.48 | 1 | 2025 |
Source payment records
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| KEYTRUDA QLEX Normalized: keytruda qlex |
Biological | Merck Sharp & Dohme LLC | $29.04 | 1 | 2025 |
Source payment records
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| BLENREP Normalized: blenrep |
Biological | GlaxoSmithKline, LLC. | $28.44 | 1 | 2025 |
Source payment records
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| TUKYSA Normalized: tukysa |
Drug | ARRAY BIOPHARMA INC | $27.45 | 1 | 2025 |
Source payment records
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| Enhertu Normalized: enhertu |
Drug | Daiichi Sankyo Inc. | $26.67 | 1 | 2025 |
Source payment records
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| DATROWAY Normalized: datroway |
Drug | Daiichi Sankyo Inc. | $26.45 | 1 | 2025 |
Source payment records
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| OPDIVO Normalized: opdivo |
Biological | E.R. Squibb & Sons, L.L.C. | $26.16 | 1 | 2025 |
Source payment records
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| JAKAFI Normalized: jakafi |
Drug | Incyte Corporation | $25.47 | 1 | 2025 |
Source payment records
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| WELIREG Normalized: welireg |
Drug | Merck Sharp & Dohme LLC | $25.00 | 1 | 2025 |
Source payment records
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| FRUZAQLA Normalized: fruzaqla |
Drug | Takeda Pharmaceuticals U.S.A., Inc. | $24.92 | 1 | 2025 |
Source payment records
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| LORBRENA Normalized: lorbrena |
Drug | ARRAY BIOPHARMA INC | $24.70 | 1 | 2025 |
Source payment records
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| Onivyde Normalized: onivyde |
Drug | Ipsen Biopharmaceuticals, Inc | $24.18 | 1 | 2025 |
Source payment records
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| Voranigo Normalized: voranigo |
Drug | SERVIER PHARMACEUTICALS LLC | $23.74 | 1 | 2025 |
Source payment records
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| Trodelvy Normalized: trodelvy |
Drug | Gilead Sciences, Inc. | $22.79 | 1 | 2025 |
Source payment records
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| IMFINZI Normalized: imfinzi |
Biological | AstraZeneca Pharmaceuticals LP | $18.84 | 1 | 2025 |
Source payment records
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| NINLARO Normalized: ninlaro |
Drug | Takeda Pharmaceuticals U.S.A., Inc. | $18.73 | 1 | 2025 |
Source payment records
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| Fabhalta Normalized: fabhalta |
Drug | Novartis Pharmaceuticals Corporation | $15.88 | 1 | 2025 |
Source payment records
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| XTANDI Normalized: xtandi |
Drug | PFIZER INC. | $1.10 | 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 |
|---|---|---|---|---|---|---|
| IMBRUVICA imbruvica |
2025 | Imbruvica | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| XTANDI xtandi |
2025 | Xtandi | 2024 | 22 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 | IMBRUVICA open payments reported associated product |
CMS Open Payments — General Payments 15599 supporting records · 6881 recipient NPIs · example record 1201352838 |
Imbruvica · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | VENCLEXTA open payments reported associated product |
CMS Open Payments — General Payments 10417 supporting records · 4944 recipient NPIs · example record 1201353144 |
Venclexta · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| ARRAY BIOPHARMA INC Exact reporting entity; no affiliate inference |
2025 | IBRANCE open payments reported associated product |
CMS Open Payments — General Payments 54 supporting records · 52 recipient NPIs · example record 1228804288 |
Ibrance · 2024 Exact normalized brand match · 1 Part D row |
25 | suppressed by CMS |
| ARRAY BIOPHARMA INC Exact reporting entity; no affiliate inference |
2025 | XTANDI open payments reported associated product |
CMS Open Payments — General Payments 98 supporting records · 88 recipient NPIs · example record 1228800820 |
Xtandi · 2024 Exact normalized brand match · 1 Part D row |
22 | suppressed by CMS |
| AstraZeneca Pharmaceuticals LP Exact reporting entity; no affiliate inference |
2025 | LYNPARZA open payments reported associated product |
CMS Open Payments — General Payments 9531 supporting records · 5030 recipient NPIs · example record 1206131376 |
Lynparza · 2024 Exact normalized brand match · 1 Part D row |
14 | suppressed by CMS |
| Celgene Corporation Exact reporting entity; no affiliate inference |
2025 | ELIQUIS open payments reported associated product |
CMS Open Payments — General Payments 25 supporting records · 24 recipient NPIs · example record 1184385048 |
Eliquis · 2024 Exact normalized brand match · 1 Part D row |
27 | suppressed by CMS |
| E.R. Squibb & Sons, L.L.C. Exact reporting entity; no affiliate inference |
2025 | ELIQUIS open payments reported associated product |
CMS Open Payments — General Payments 27956 supporting records · 14870 recipient NPIs · example record 1184377713 |
Eliquis · 2024 Exact normalized brand match · 1 Part D row |
27 | suppressed by CMS |
| Merck Sharp & Dohme LLC Exact reporting entity; no affiliate inference |
2025 | LYNPARZA open payments reported associated product |
CMS Open Payments — General Payments 10903 supporting records · 6595 recipient NPIs · example record 1237992238 |
Lynparza · 2024 Exact normalized brand match · 1 Part D row |
14 | suppressed by CMS |
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | ELIQUIS open payments reported associated product |
CMS Open Payments — General Payments 87112 supporting records · 36032 recipient NPIs · example record 1228794063 |
Eliquis · 2024 Exact normalized brand match · 1 Part D row |
27 | suppressed by CMS |
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | IBRANCE open payments reported associated product |
CMS Open Payments — General Payments 11505 supporting records · 4934 recipient NPIs · example record 1228794164 |
Ibrance · 2024 Exact normalized brand match · 1 Part D row |
25 | suppressed by CMS |
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | XTANDI open payments reported associated product |
CMS Open Payments — General Payments 19368 supporting records · 7657 recipient NPIs · example record 1228794230 |
Xtandi · 2024 Exact normalized brand match · 1 Part D row |
22 | 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 |
|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 69 | 19 |
| Letrozole | Letrozole | 48 | 11 |
| Dexamethasone | Dexamethasone | 45 | 21 |
| Xarelto | Rivaroxaban | 43 | 11 |
| Olanzapine | Olanzapine | 39 | 19 |
| Hydromorphone Hcl | Hydromorphone Hcl | 36 | suppressed |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 33 | 24 |
| Revlimid | Lenalidomide | 32 | suppressed |
| Ondansetron Odt | Ondansetron | 28 | 14 |
| Eliquis | Apixaban | 27 | suppressed |
| Ibrance | Palbociclib | 25 | suppressed |
| Xtandi | Enzalutamide | 22 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 21 | 13 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 21 | suppressed |
| Pantoprazole Sodium | Pantoprazole Sodium | 21 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 19 | suppressed |
| Prednisone | Prednisone | 19 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 19 | suppressed |
| Tamoxifen Citrate | Tamoxifen Citrate | 18 | suppressed |
| Gabapentin | Gabapentin | 17 | suppressed |
| Potassium Chloride | Potassium Chloride | 17 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 16 | suppressed |
| Abiraterone Acetate | Abiraterone Acetate | 15 | suppressed |
| Amlodipine Besylate | Amlodipine Besylate | 15 | suppressed |
| Furosemide | Furosemide | 15 | suppressed |
| Hydroxyurea | Hydroxyurea | 15 | suppressed |
| Levothyroxine Sodium | Levothyroxine Sodium | 15 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 15 | suppressed |
| Alecensa | Alectinib Hcl | 14 | suppressed |
| Lidocaine-Prilocaine | Lidocaine/Prilocaine | 14 | 12 |
| Lorazepam | Lorazepam | 14 | suppressed |
| Lynparza | Olaparib | 14 | suppressed |
| Omeprazole | Omeprazole | 14 | suppressed |
| Imbruvica | Ibrutinib | 13 | suppressed |
| Tamsulosin Hcl | Tamsulosin Hcl | 13 | suppressed |
| Venclexta | Venetoclax | 13 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 12 | suppressed |
| Famotidine | Famotidine | 12 | suppressed |
| Morphine Sulfate | Morphine Sulfate | 12 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 12 | suppressed |
| Oxycontin | Oxycodone Hcl | 12 | suppressed |
| Sertraline Hcl | Sertraline 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 | $1,079.05 · 44 records | Merck Sharp & Dohme LLC | ADCETRIS, BLENREP, BRAFTOVI, DATROWAY, ELREXFIO, EPKINLY, Enhertu, FRUZAQLA, Fabhalta, ICLUSIG, IMBRUVICA, IMFINZI, JAKAFI, KEYTRUDA, KEYTRUDA QLEX, KISQALI, LORBRENA, Lenvima, MEKTOVI, NINLARO, OJJAARA, OPDIVO, Onivyde, PADCEV, QINLOCK, REBLOZYL, ROMVIMZA, SCEMBLIX, TEVIMBRA, TUKYSA, Trodelvy, Voranigo, WELIREG, XTANDI | 11 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Imbruvica 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