Healthcare provider profile · identity verified

David Adam Mack, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · HENDERSON, NC · NPI 1396966818

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 David Adam Mack, M.D. received $2,682.64 in general payments during 2025 across 68 reported records.

Takeda Pharmaceuticals U.S.A., Inc. accounted for 48.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 38 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Brukinsa, Eliquis, Ibrance, Xtandi.

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 21 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 15 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 15 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 CALQUENCE as an associated drug or biological on 8404 records involving 3935 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Calquence by this doctor in 2024.

BeOne Medicines USA, 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 BRUKINSA as an associated drug or biological on 10251 records involving 4941 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Brukinsa by this doctor in 2024.

BeiGene USA, 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 BRUKINSA as an associated drug or biological on 2084 records involving 1673 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Brukinsa 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 70 claims for Eliquis 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 POMALYST as an associated drug or biological on 282 records involving 237 distinct recipient NPIs. Public Medicare Part D data also shows 42 claims for Pomalyst 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 70 claims for Eliquis by this doctor in 2024.

Genentech USA, 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 2896 records involving 2018 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Venclexta by this doctor in 2024.

Incyte 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 JAKAFI as an associated drug or biological on 14854 records involving 6477 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Jakafi 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 23 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 70 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 21 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 15 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

$2,682.64

68 reported records · 21 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
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $1,312.5048.9%12025
PFIZER INC. Unresolved — no canonical attribution shown $158.565.9%82025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $137.225.1%82025
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $135.275.0%52025
Celgene Corporation Unresolved — no canonical attribution shown $122.444.6%62025
Genentech USA, Inc. Unresolved — no canonical attribution shown $106.114.0%52025
ARRAY BIOPHARMA INC Unresolved — no canonical attribution shown $99.563.7%52025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $84.483.1%42025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $78.372.9%42025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $69.802.6%42025
Genmab U.S., Inc. Unresolved — no canonical attribution shown $62.872.3%32025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $59.322.2%22025
BeOne Medicines USA, Inc. Unresolved — no canonical attribution shown $40.551.5%22025
SOBI, INC Unresolved — no canonical attribution shown $38.831.4%22025
Incyte Corporation Unresolved — no canonical attribution shown $34.851.3%22025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $31.921.2%22025
Eisai Inc. Unresolved — no canonical attribution shown $27.561.0%12025
BeiGene USA, Inc. Unresolved — no canonical attribution shown $26.911.0%12025
Menarini Silicon Biosystems, Inc. Unresolved — no canonical attribution shown $23.880.9%12025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $16.590.6%12025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $15.050.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,370.1467
Consulting Fee$1,312.501

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
NINLARO
Normalized: ninlaro
Drug Takeda Pharmaceuticals U.S.A., Inc. $1,312.50 1 2025
Source payment records
Trodelvy
Normalized: trodelvy
Drug Gilead Sciences, Inc. $137.22 8 2025
Source payment records
ENHERTU
Normalized: enhertu
Biological, Drug AstraZeneca Pharmaceuticals LP, Daiichi Sankyo Inc. $125.20 5 2025
Source payment records
IBRANCE
Normalized: ibrance
Drug ARRAY BIOPHARMA INC, PFIZER INC. $106.77 5 2025
Source payment records
TUKYSA
Normalized: tukysa
Drug ARRAY BIOPHARMA INC, PFIZER INC. $97.03 5 2025
Source payment records
REBLOZYL
Normalized: reblozyl
Biological Celgene Corporation $85.92 4 2025
Source payment records
BRAFTOVI
Normalized: braftovi
Drug ARRAY BIOPHARMA INC $77.26 4 2025
Source payment records
BRUKINSA
Normalized: brukinsa
Drug BeOne Medicines USA, Inc., BeiGene USA, Inc. $67.46 3 2025
Source payment records
LORBRENA
Normalized: lorbrena
Drug ARRAY BIOPHARMA INC $65.88 3 2025
Source payment records
Epkinly
Normalized: epkinly
Drug Genmab U.S., Inc. $62.87 3 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $59.32 2 2025
Source payment records
JEMPERLI
Normalized: jemperli
Biological GlaxoSmithKline, LLC. $57.72 3 2025
Source payment records
ZEJULA
Normalized: zejula
Drug GlaxoSmithKline, LLC. $57.72 3 2025
Source payment records
MEKTOVI
Normalized: mektovi
Drug ARRAY BIOPHARMA INC $55.86 3 2025
Source payment records
DATROWAY
Normalized: datroway
Drug Daiichi Sankyo Inc. $55.64 2 2025
Source payment records
Polivy
Normalized: polivy
Biological Genentech USA, Inc. $41.82 2 2025
Source payment records
Phesgo
Normalized: phesgo
Biological Genentech USA, Inc. $41.10 2 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $40.18 2 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $40.18 2 2025
Source payment records
XTANDI
Normalized: xtandi
Drug PFIZER INC. $40.18 2 2025
Source payment records
TAGRISSO
Normalized: tagrisso
Drug AstraZeneca Pharmaceuticals LP $38.91 2 2025
Source payment records
Vonjo
Normalized: vonjo
Drug SOBI, INC $38.83 2 2025
Source payment records
OPDIVO
Normalized: opdivo
Biological Celgene Corporation $36.52 2 2025
Source payment records
MONJUVI
Normalized: monjuvi
Drug Incyte Corporation $34.85 2 2025
Source payment records
Vyloy
Normalized: vyloy
Drug Astellas Pharma US Inc $31.92 2 2025
Source payment records
Lenvima
Normalized: lenvima
Drug Eisai Inc. $27.56 1 2025
Source payment records
TEVIMBRA
Normalized: tevimbra
Drug BeiGene USA, Inc. $26.91 1 2025
Source payment records
Cellsearch
Normalized: cellsearch
Device Menarini Silicon Biosystems, Inc. $23.88 1 2025
Source payment records
Itovebi
Normalized: itovebi
Biological Genentech USA, Inc. $23.19 1 2025
Source payment records
BLENREP
Normalized: blenrep
Biological GlaxoSmithKline, LLC. $20.65 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $17.76 1 2025
Source payment records
RYBREVANT
Normalized: rybrevant
Drug Janssen Biotech, Inc. $16.59 1 2025
Source payment records
ADCETRIS
Normalized: adcetris
Biological PFIZER INC. $15.56 1 2025
Source payment records
BOSULIF
Normalized: bosulif
Drug PFIZER INC. $15.56 1 2025
Source payment records
ELREXFIO
Normalized: elrexfio
Drug PFIZER INC. $15.56 1 2025
Source payment records
OJJAARA
Normalized: ojjaara
Drug GlaxoSmithKline, LLC. $15.50 1 2025
Source payment records
DANZITEN
Normalized: danziten
Drug Azurity Pharmaceuticals, Inc. $15.05 1 2025
Source payment records
VIVIMUSTA
Normalized: vivimusta
Drug Azurity Pharmaceuticals, Inc. $15.05 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
BRUKINSA
brukinsa
2025 Brukinsa 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
ELIQUIS
eliquis
2025 Eliquis 2024 70 exact normalized Medicare Part D
IBRANCE
ibrance
2025 Ibrance 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
XTANDI
xtandi
2025 Xtandi 2024 15
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
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
21 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
15 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
15 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 CALQUENCE
open payments reported associated product
CMS Open Payments — General Payments
8404 supporting records · 3935 recipient NPIs · example record 1206131382
Calquence · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
BeOne Medicines USA, Inc.
Exact reporting entity; no affiliate inference
2025 BRUKINSA
open payments reported associated product
CMS Open Payments — General Payments
10251 supporting records · 4941 recipient NPIs · example record 1202883638
Brukinsa · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
BeiGene USA, Inc.
Exact reporting entity; no affiliate inference
2025 BRUKINSA
open payments reported associated product
CMS Open Payments — General Payments
2084 supporting records · 1673 recipient NPIs · example record 1202877750
Brukinsa · 2024
Exact normalized brand match · 1 Part D row
16 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
70 16
Celgene Corporation
Exact reporting entity; no affiliate inference
2025 POMALYST
open payments reported associated product
CMS Open Payments — General Payments
282 supporting records · 237 recipient NPIs · example record 1184378437
Pomalyst · 2024
Exact normalized brand match · 1 Part D row
42 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
70 16
Genentech USA, Inc.
Exact reporting entity; no affiliate inference
2025 Venclexta
open payments reported associated product
CMS Open Payments — General Payments
2896 supporting records · 2018 recipient NPIs · example record 1211488584
Venclexta · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
Incyte Corporation
Exact reporting entity; no affiliate inference
2025 JAKAFI
open payments reported associated product
CMS Open Payments — General Payments
14854 supporting records · 6477 recipient NPIs · example record 1225959940
Jakafi · 2024
Exact normalized brand match · 1 Part D row
24 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
23 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
70 16
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
21 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
15 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
LetrozoleLetrozole13038
PrednisonePrednisone8622
Abiraterone AcetateAbiraterone Acetate7614
EliquisApixaban7016
DexamethasoneDexamethasone6428
AcyclovirAcyclovir5513
PomalystPomalidomide42suppressed
HydroxyureaHydroxyurea4012
Potassium ChloridePotassium Chloride34suppressed
LenalidomideLenalidomide31suppressed
RevlimidLenalidomide26suppressed
Ibandronate SodiumIbandronate Sodium24suppressed
JakafiRuxolitinib Phosphate24suppressed
XareltoRivaroxaban23suppressed
GabapentinGabapentin22suppressed
Prochlorperazine MaleateProchlorperazine Maleate2214
IbrancePalbociclib21suppressed
ExemestaneExemestane20suppressed
OlanzapineOlanzapine1914
VenclextaVenetoclax18suppressed
AnastrozoleAnastrozole17suppressed
BrukinsaZanubrutinib16suppressed
CalquenceAcalabrutinib Maleate16suppressed
Alendronate SodiumAlendronate Sodium15suppressed
Tamoxifen CitrateTamoxifen Citrate15suppressed
XtandiEnzalutamide15suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine14suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen14suppressed
Oxycodone HclOxycodone Hcl14suppressed
Trazodone HclTrazodone Hcl13suppressed
Metformin HclMetformin Hcl12suppressed
Montelukast SodiumMontelukast Sodium1211
PregabalinPregabalin12suppressed
Gamunex-CImmune Globul G/Gly/Iga Avg 4611suppressed
HydrocortisoneHydrocortisone11suppressed
Triamcinolone AcetonideTriamcinolone Acetonide11suppressed

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 $2,682.64 · 68 records Takeda Pharmaceuticals U.S.A., Inc. ADCETRIS, BLENREP, BOSULIF, BRAFTOVI, BRUKINSA, Cellsearch, DANZITEN, DATROWAY, ELIQUIS, ELREXFIO, ENHERTU, Epkinly, IBRANCE, Itovebi, JEMPERLI, KEYTRUDA, LORBRENA, Lenvima, MEKTOVI, MONJUVI, NINLARO, OJJAARA, OPDIVO, ORGOVYX, Phesgo, Polivy, REBLOZYL, RYBREVANT, TAGRISSO, TALZENNA, TEVIMBRA, TUKYSA, Trodelvy, VIVIMUSTA, Vonjo, Vyloy, XTANDI, ZEJULA 15
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