Healthcare provider profile · identity verified

Marcus K. Weldon, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · MACON, GA · NPI 1942689286

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Marcus K. Weldon, MD received $2,216.15 in general payments during 2025 across 90 reported records.

PFIZER INC. accounted for 7.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 67 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 28 claims for Imbruvica 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 39 claims for Xtandi by this doctor in 2024.

Astellas Pharma US 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 11345 records involving 5418 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Xtandi 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 57 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 57 claims for Eliquis by this doctor in 2024.

Janssen Biotech, 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 47 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Imbruvica by this doctor in 2024.

Janssen Biotech, 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 XARELTO as an associated drug or biological on 24 records involving 23 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Xarelto 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 57 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 XTANDI as an associated drug or biological on 19368 records involving 7657 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Xtandi by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$2,216.15

90 reported records · 40 companies

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 companyCanonical companyAmountShareRecordsYear
PFIZER INC. Unresolved — no canonical attribution shown $164.877.4%92025
Exelixis Inc. Unresolved — no canonical attribution shown $149.306.7%42025
BeOne Medicines USA, Inc. Unresolved — no canonical attribution shown $134.266.1%62025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $112.285.1%52025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $105.754.8%42025
GENZYME CORPORATION Unresolved — no canonical attribution shown $102.384.6%32025
SEAGEN INC. Unresolved — no canonical attribution shown $99.004.5%12025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $94.424.3%32025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $84.063.8%32025
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $81.243.7%32025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $75.153.4%32025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $68.433.1%22025
Stemline Therapeutics Inc. Unresolved — no canonical attribution shown $67.163.0%32025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $63.282.9%22025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $62.062.8%32025
PharmaEssentia USA Corporation Unresolved — no canonical attribution shown $59.852.7%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $54.692.5%32025
ABBVIE INC. Unresolved — no canonical attribution shown $50.222.3%22025
Genentech USA, Inc. Unresolved — no canonical attribution shown $48.312.2%22025
Syndax Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $44.892.0%22025
Rigel Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $44.502.0%22025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $41.071.9%22025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $40.771.8%22025
ARRAY BIOPHARMA INC Unresolved — no canonical attribution shown $33.181.5%32025
TOLMAR, INC. Unresolved — no canonical attribution shown $29.411.3%12025
pharmaand GmbH Unresolved — no canonical attribution shown $29.411.3%12025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$25.771.2%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $25.081.1%12025
Incyte Corporation Unresolved — no canonical attribution shown $24.711.1%12025
Aveo Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $23.251.1%12025
Geron Corporation Unresolved — no canonical attribution shown $22.081.0%12025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $20.330.9%12025
SpringWorks Therapeutics, Inc. Unresolved — no canonical attribution shown $20.220.9%12025
Celgene Corporation Unresolved — no canonical attribution shown $18.300.8%12025
SOBI, INC Unresolved — no canonical attribution shown $18.020.8%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $17.210.8%12025
PUMA BIOTECHNOLOGY, INC. Unresolved — no canonical attribution shown $17.120.8%12025
TerSera Therapeutics LLC Unresolved — no canonical attribution shown $15.450.7%12025
Eisai Inc. Unresolved — no canonical attribution shown $14.360.7%12025
Deciphera Pharmaceuticals Inc. Unresolved — no canonical attribution shown $14.310.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,030.1287
Education$186.033

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 productTypeReported companyRelated amount*RecordsYear
Nubeqa
Normalized: nubeqa
Drug Bayer Healthcare Pharmaceuticals Inc. $105.75 4 2025
Source payment records
LIBTAYO
Normalized: libtayo
Biological Regeneron Healthcare Solutions, Inc. $94.42 3 2025
Source payment records
BRUKINSA
Normalized: brukinsa
Drug BeOne Medicines USA, Inc. $90.62 4 2025
Source payment records
Xofigo
Normalized: xofigo
Drug Bayer Healthcare Pharmaceuticals Inc. $84.83 3 2025
Source payment records
CABOMETYX
Normalized: cabometyx
Drug Exelixis Inc. $75.31 3 2025
Source payment records
Trodelvy
Normalized: trodelvy
Drug Gilead Sciences, Inc. $75.15 3 2025
Source payment records
ZEPZELCA
Normalized: zepzelca
Drug JAZZ PHARMACEUTICALS INC. $68.43 2 2025
Source payment records
SARCLISA
Normalized: sarclisa
Biological GENZYME CORPORATION $65.56 2 2025
Source payment records
PADCEV
Normalized: padcev
Biological, Drug Astellas Pharma US Inc, PFIZER INC. $63.80 3 2025
Source payment records
KISQALI
Normalized: kisqali
Drug Novartis Pharmaceuticals Corporation $63.28 2 2025
Source payment records
XTANDI
Normalized: xtandi
Drug Astellas Pharma US Inc, PFIZER INC. $62.93 3 2025
Source payment records
DARZALEX
Normalized: darzalex
Biological Janssen Biotech, Inc. $62.06 3 2025
Source payment records
BESREMI
Normalized: besremi
Drug PharmaEssentia USA Corporation $59.85 2 2025
Source payment records
RUBRACA
Normalized: rubraca
Drug TOLMAR, INC., pharmaand GmbH $58.82 2 2025
Source payment records
Enhertu
Normalized: enhertu
Drug Daiichi Sankyo Inc. $53.54 2 2025
Source payment records
TIVDAK
Normalized: tivdak
Biological PFIZER INC. $53.28 3 2025
Source payment records
BRAFTOVI
Normalized: braftovi
Drug ARRAY BIOPHARMA INC, PFIZER INC. $46.22 4 2025
Source payment records
Gavreto
Normalized: gavreto
Drug Rigel Pharmaceuticals, Inc. $44.50 2 2025
Source payment records
Rezlidhia
Normalized: rezlidhia
Drug Rigel Pharmaceuticals, Inc. $44.50 2 2025
Source payment records
TAVALISSE
Normalized: tavalisse
Drug Rigel Pharmaceuticals, Inc. $44.50 2 2025
Source payment records
ELZONRIS
Normalized: elzonris
Drug Stemline Therapeutics Inc. $43.70 2 2025
Source payment records
TEVIMBRA
Normalized: tevimbra
Drug BeOne Medicines USA, Inc. $43.64 2 2025
Source payment records
IBRANCE
Normalized: ibrance
Drug PFIZER INC. $41.84 2 2025
Source payment records
TUKYSA
Normalized: tukysa
Drug PFIZER INC. $41.84 2 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $41.07 2 2025
Source payment records
OJJAARA
Normalized: ojjaara
Drug GlaxoSmithKline, LLC. $41.07 2 2025
Source payment records
Onivyde
Normalized: onivyde
Drug Ipsen Biopharmaceuticals, Inc $40.77 2 2025
Source payment records
AYVAKIT
Normalized: ayvakit
Biological GENZYME CORPORATION $36.82 1 2025
Source payment records
REBLOZYL
Normalized: reblozyl
Biological Celgene Corporation, Merck Sharp & Dohme LLC $36.63 2 2025
Source payment records
ALUNBRIG
Normalized: alunbrig
Drug Takeda Pharmaceuticals U.S.A., Inc. $32.55 1 2025
Source payment records
NINLARO
Normalized: ninlaro
Drug Takeda Pharmaceuticals U.S.A., Inc. $32.15 1 2025
Source payment records
IMBRUVICA
Normalized: imbruvica
Drug ABBVIE INC. $30.78 1 2025
Source payment records
ELIGARD
Normalized: eligard
Drug TOLMAR, INC. $29.41 1 2025
Source payment records
DATROWAY
Normalized: datroway
Drug Daiichi Sankyo Inc. $27.70 1 2025
Source payment records
Venclexta
Normalized: venclexta
Biological Genentech USA, Inc. $27.39 1 2025
Source payment records
MEKTOVI
Normalized: mektovi
Drug ARRAY BIOPHARMA INC, PFIZER INC. $27.14 2 2025
Source payment records
OSTEOCOOL RF ABLATION SYSTEM
Normalized: osteocool rf ablation system
Device Medtronic, Inc. $25.77 1 2025
Source payment records
JAYPIRCA
Normalized: jaypirca
Drug Lilly USA, LLC $25.08 1 2025
Source payment records
VERZENIO
Normalized: verzenio
Drug Lilly USA, LLC $25.08 1 2025
Source payment records
JAKAFI
Normalized: jakafi
Drug Incyte Corporation $24.71 1 2025
Source payment records
NIKTIMVO
Normalized: niktimvo
Drug Incyte Corporation $24.71 1 2025
Source payment records
Orserdu
Normalized: orserdu
Drug Stemline Therapeutics Inc. $23.46 1 2025
Source payment records
FOTIVDA
Normalized: fotivda
Drug Aveo Pharmaceuticals, Inc. $23.25 1 2025
Source payment records
TECVAYLI
Normalized: tecvayli
Biological Janssen Biotech, Inc. $22.43 1 2025
Source payment records
RYTELO
Normalized: rytelo
Drug Geron Corporation $22.08 1 2025
Source payment records
Polivy
Normalized: polivy
Biological Genentech USA, Inc. $20.92 1 2025
Source payment records
Stivarga
Normalized: stivarga
Drug Bayer Healthcare Pharmaceuticals Inc. $20.92 1 2025
Source payment records
Vitrakvi
Normalized: vitrakvi
Drug Bayer Healthcare Pharmaceuticals Inc. $20.92 1 2025
Source payment records
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $20.33 1 2025
Source payment records
OGSIVEO
Normalized: ogsiveo
Drug SpringWorks Therapeutics, Inc. $20.22 1 2025
Source payment records
Vyloy
Normalized: vyloy
Drug Astellas Pharma US Inc $20.07 1 2025
Source payment records
LUPRON DEPOT
Normalized: lupron depot
Drug ABBVIE INC. $19.44 1 2025
Source payment records
FRUZAQLA
Normalized: fruzaqla
Drug Takeda Pharmaceuticals U.S.A., Inc. $19.36 1 2025
Source payment records
WELIREG
Normalized: welireg
Drug Merck Sharp & Dohme LLC $18.33 1 2025
Source payment records
Doptelet
Normalized: doptelet
Drug SOBI, INC $18.02 1 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $17.70 1 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $17.70 1 2025
Source payment records
OPDUALAG
Normalized: opdualag
Drug E.R. Squibb & Sons, L.L.C. $17.21 1 2025
Source payment records
NERLYNX
Normalized: nerlynx
Drug PUMA BIOTECHNOLOGY, INC. $17.12 1 2025
Source payment records
INLYTA
Normalized: inlyta
Drug PFIZER INC. $16.82 1 2025
Source payment records
Zoladex
Normalized: zoladex
Drug TerSera Therapeutics LLC $15.45 1 2025
Source payment records
Lenvima
Normalized: lenvima
Drug Eisai Inc. $14.36 1 2025
Source payment records
QINLOCK
Normalized: qinlock
Drug Deciphera Pharmaceuticals Inc. $14.31 1 2025
Source payment records
TGCT
Normalized: tgct
Drug Deciphera Pharmaceuticals Inc. $14.31 1 2025
Source payment records
LORBRENA
Normalized: lorbrena
Drug ARRAY BIOPHARMA INC $14.10 1 2025
Source payment records
JEMPERLI
Normalized: jemperli
Biological GlaxoSmithKline, LLC. $13.62 1 2025
Source payment records
ZEJULA
Normalized: zejula
Drug GlaxoSmithKline, LLC. $13.62 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 productPayment yearPart D brandPart D yearClaimsMatch methodSource
IMBRUVICA
imbruvica
2025 Imbruvica 2024 28
Beneficiary count suppressed
exact normalized Medicare Part D
XTANDI
xtandi
2025 Xtandi 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 companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
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
28 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
39 suppressed by CMS
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Xtandi
open payments reported associated product
CMS Open Payments — General Payments
11345 supporting records · 5418 recipient NPIs · example record 1238560686
Xtandi · 2024
Exact normalized brand match · 1 Part D row
39 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
57 14
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
57 14
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 IMBRUVICA
open payments reported associated product
CMS Open Payments — General Payments
47 supporting records · 33 recipient NPIs · example record 1174328453
Imbruvica · 2024
Exact normalized brand match · 1 Part D row
28 suppressed by CMS
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 XARELTO
open payments reported associated product
CMS Open Payments — General Payments
24 supporting records · 23 recipient NPIs · example record 1174259978
Xarelto · 2024
Exact normalized brand match · 1 Part D row
13 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
57 14
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
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

BrandGenericClaimsBeneficiaries
AnastrozoleAnastrozole16264
Oxycodone HclOxycodone Hcl13563
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen10759
Morphine Sulfate ErMorphine Sulfate7132
EliquisApixaban5714
LetrozoleLetrozole5516
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen4523
GabapentinGabapentin4413
HydroxyureaHydroxyurea4011
XtandiEnzalutamide39suppressed
AcyclovirAcyclovir34suppressed
Megestrol AcetateMegestrol Acetate2919
DexamethasoneDexamethasone2813
ImbruvicaIbrutinib28suppressed
Lidocaine-PrilocaineLidocaine/Prilocaine2317
OlanzapineOlanzapine23suppressed
Ondansetron HclOndansetron Hcl2213
PrednisonePrednisone22suppressed
TagrissoOsimertinib Mesylate22suppressed
Imatinib MesylateImatinib Mesylate21suppressed
Tamoxifen CitrateTamoxifen Citrate21suppressed
Granisetron HclGranisetron Hcl17suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim17suppressed
Tramadol HclTramadol Hcl1714
Abiraterone AcetateAbiraterone Acetate16suppressed
Ondansetron OdtOndansetron1511
Enoxaparin SodiumEnoxaparin Sodium14suppressed
ExemestaneExemestane14suppressed
XareltoRivaroxaban13suppressed
FluconazoleFluconazole12suppressed
Pantoprazole SodiumPantoprazole Sodium12suppressed
Tamsulosin HclTamsulosin Hcl12suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $2,216.15 · 90 records PFIZER INC. ALUNBRIG, AYVAKIT, BESREMI, BRAFTOVI, BRUKINSA, CABOMETYX, DARZALEX, DATROWAY, Doptelet, ELIGARD, ELZONRIS, Enhertu, FOTIVDA, FRUZAQLA, Gavreto, IBRANCE, IMBRUVICA, INLYTA, JAKAFI, JAYPIRCA, JEMPERLI, KEYTRUDA, KISQALI, LIBTAYO, LORBRENA, LUPRON DEPOT, Lenvima, MEKTOVI, NERLYNX, NIKTIMVO, NINLARO, Nubeqa, OGSIVEO, OJJAARA, OPDUALAG, ORGOVYX, OSTEOCOOL RF ABLATION SYSTEM, Onivyde, Orserdu, PADCEV, Polivy, QINLOCK, REBLOZYL, RUBRACA, RYTELO, Rezlidhia, SARCLISA, Stivarga, TALZENNA, TAVALISSE, TECVAYLI, TEVIMBRA, TGCT, TIVDAK, TUKYSA, Trodelvy, ULTOMIRIS, VERZENIO, Venclexta, Vitrakvi, Vyloy, WELIREG, XTANDI, Xofigo, ZEJULA, ZEPZELCA, Zoladex 9
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error