Healthcare provider profile · identity verified

Michael Gary Martin, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · MEMPHIS, TN · NPI 1588671085

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 Michael Gary Martin, MD received $229.31 in general payments during 2025 across 11 reported records.

E.R. Squibb & Sons, L.L.C. accounted for 22.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 14 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Erleada, Keytruda, Xtandi.

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 87 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 SPRYCEL as an associated drug or biological on 32 records involving 32 distinct recipient NPIs. Public Medicare Part D data also shows 42 claims for Sprycel 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 ERLEADA as an associated drug or biological on 32382 records involving 10919 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Erleada 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 32 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 45 claims for Xarelto 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 KEYTRUDA as an associated drug or biological on 46588 records involving 15767 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Keytruda 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 87 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 18 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 17 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

$229.31

11 reported records · 7 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
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $50.9322.2%32025
Lilly USA, LLC Unresolved — no canonical attribution shown $47.8220.9%22025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $39.2617.1%22025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $28.5012.4%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $24.8610.8%12025
PFIZER INC. Unresolved — no canonical attribution shown $23.5410.3%12025
Syndax Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.406.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$229.3111

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
OPDIVO
Normalized: opdivo
Biological E.R. Squibb & Sons, L.L.C. $50.93 3 2025
Source payment records
JAYPIRCA
Normalized: jaypirca
Drug Lilly USA, LLC $47.82 2 2025
Source payment records
VERZENIO
Normalized: verzenio
Drug Lilly USA, LLC $47.82 2 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $28.50 1 2025
Source payment records
JEMPERLI
Normalized: jemperli
Biological GlaxoSmithKline, LLC. $24.86 1 2025
Source payment records
ZEJULA
Normalized: zejula
Drug GlaxoSmithKline, LLC. $24.86 1 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $23.54 1 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $23.54 1 2025
Source payment records
XTANDI
Normalized: xtandi
Drug PFIZER INC. $23.54 1 2025
Source payment records
AKEEGA
Normalized: akeega
Drug Janssen Biotech, Inc. $21.91 1 2025
Source payment records
BALVERSA
Normalized: balversa
Drug Janssen Biotech, Inc. $21.91 1 2025
Source payment records
ERLEADA
Normalized: erleada
Drug Janssen Biotech, Inc. $21.91 1 2025
Source payment records
DARZALEX
Normalized: darzalex
Biological Janssen Biotech, Inc. $17.35 1 2025
Source payment records
TECVAYLI
Normalized: tecvayli
Biological Janssen Biotech, Inc. $17.35 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
ERLEADA
erleada
2025 Erleada 2024 17
Beneficiary count suppressed
exact normalized Medicare Part D
KEYTRUDA
keytruda
2025 Keytruda 2024 22
Beneficiary count suppressed
exact normalized Medicare Part D
XTANDI
xtandi
2025 Xtandi 2024 17
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
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
87 18
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 SPRYCEL
open payments reported associated product
CMS Open Payments — General Payments
32 supporting records · 32 recipient NPIs · example record 1184390211
Sprycel · 2024
Exact normalized brand match · 1 Part D row
42 suppressed by CMS
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 ERLEADA
open payments reported associated product
CMS Open Payments — General Payments
32382 supporting records · 10919 recipient NPIs · example record 1174257499
Erleada · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
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
32 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
45 12
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 KEYTRUDA
open payments reported associated product
CMS Open Payments — General Payments
46588 supporting records · 15767 recipient NPIs · example record 1237992210
Keytruda · 2024
Exact normalized brand match · 1 Part D row
22 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
87 18
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
18 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
17 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
EliquisApixaban8718
PrednisonePrednisone6917
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen6418
AcyclovirAcyclovir5812
XareltoRivaroxaban4512
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4316
AnastrozoleAnastrozole4215
SprycelDasatinib42suppressed
LetrozoleLetrozole4111
BrukinsaZanubrutinib40suppressed
Prochlorperazine MaleateProchlorperazine Maleate3924
AzithromycinAzithromycin37suppressed
DexamethasoneDexamethasone3612
ImbruvicaIbrutinib32suppressed
Pantoprazole SodiumPantoprazole Sodium29suppressed
ExemestaneExemestane28suppressed
GabapentinGabapentin26suppressed
Oxycodone HclOxycodone Hcl26suppressed
EntecavirEntecavir25suppressed
RevlimidLenalidomide25suppressed
Potassium ChloridePotassium Chloride24suppressed
Tramadol HclTramadol Hcl2312
KeytrudaPembrolizumab22suppressed
Tamsulosin HclTamsulosin Hcl22suppressed
HydroxyureaHydroxyurea21suppressed
Duloxetine HclDuloxetine Hcl20suppressed
IbrancePalbociclib18suppressed
ErleadaApalutamide17suppressed
XtandiEnzalutamide17suppressed
BaclofenBaclofen16suppressed
Ondansetron OdtOndansetron16suppressed
AllopurinolAllopurinol15suppressed
AlprazolamAlprazolam15suppressed
EligardLeuprolide Acetate15suppressed
LorazepamLorazepam14suppressed
MvasiBevacizumab-Awwb14suppressed
TruximaRituximab-Abbs14suppressed
HydrochlorothiazideHydrochlorothiazide13suppressed
JakafiRuxolitinib Phosphate13suppressed
Levothyroxine SodiumLevothyroxine Sodium13suppressed
Tamoxifen CitrateTamoxifen Citrate13suppressed
Zolpidem TartrateZolpidem Tartrate13suppressed
Abiraterone AcetateAbiraterone Acetate12suppressed
Amlodipine BesylateAmlodipine Besylate12suppressed
BicalutamideBicalutamide12suppressed
Lupron DepotLeuprolide Acetate12suppressed
Sumatriptan SuccinateSumatriptan Succinate12suppressed
CabometyxCabozantinib S-Malate11suppressed
MeloxicamMeloxicam11suppressed
OmeprazoleOmeprazole11suppressed
UrsodiolUrsodiol11suppressed

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 $229.31 · 11 records E.R. Squibb & Sons, L.L.C. AKEEGA, BALVERSA, DARZALEX, ERLEADA, JAYPIRCA, JEMPERLI, KEYTRUDA, OPDIVO, ORGOVYX, TALZENNA, TECVAYLI, VERZENIO, XTANDI, ZEJULA 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