Healthcare provider profile · identity verified

Jacob T Ark, M.D.

Allopathic & Osteopathic Physicians|Urology · SAINT LOUIS, MO · NPI 1891053716

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 Jacob T Ark, M.D. received $1,666.26 in general payments during 2025 across 70 reported records.

Dendreon Pharmaceuticals LLC accounted for 16.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 23 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Gemtesa, Nubeqa, Orgovyx, Xtandi.

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 Myrbetriq as an associated drug or biological on 16 records involving 16 distinct recipient NPIs. Public Medicare Part D data also shows 46 claims for Myrbetriq 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 229 claims for Xtandi by this doctor in 2024.

Bayer Healthcare Pharmaceuticals 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 Nubeqa as an associated drug or biological on 24369 records involving 9557 distinct recipient NPIs. Public Medicare Part D data also shows 52 claims for Nubeqa 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 30 claims for Erleada by this doctor in 2024.

Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 63 claims for Gemtesa by this doctor in 2024.

Sumitomo Pharma America, 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 ORGOVYX as an associated drug or biological on 17129 records involving 6223 distinct recipient NPIs. Public Medicare Part D data also shows 68 claims for Orgovyx by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,666.26

70 reported records · 20 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
Dendreon Pharmaceuticals LLC Unresolved — no canonical attribution shown $282.2416.9%142025
UROGEN PHARMA, INC. Unresolved — no canonical attribution shown $235.1514.1%52025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $214.8812.9%112025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $145.548.7%82025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $135.658.1%12025
ACCORD HEALTHCARE, INC. Unresolved — no canonical attribution shown $92.865.6%62025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $80.884.8%42025
Boston Scientific Corporation Unresolved — no canonical attribution shown $67.204.0%22025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $63.833.8%32025
Cook Medical LLC Unresolved — no canonical attribution shown $56.293.4%22025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $55.943.4%32025
Ferring Pharmaceuticals Inc. Unresolved — no canonical attribution shown $37.112.2%12025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $36.992.2%22025
Procept Biorobotics Corporation Unresolved — no canonical attribution shown $33.082.0%12025
Myriad Genetic Laboratories, Inc. Unresolved — no canonical attribution shown $31.751.9%22025
Calyxo, Inc. Unresolved — no canonical attribution shown $30.061.8%12025
ABBVIE INC. Unresolved — no canonical attribution shown $23.671.4%12025
Blue Earth Diagnostics Unresolved — no canonical attribution shown $21.091.3%12025
Telix Pharmaceuticals Unresolved — no canonical attribution shown $14.220.8%12025
pharmaand GmbH Unresolved — no canonical attribution shown $7.830.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,638.3568
Education$27.912

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
PROVENGE
Normalized: provenge
Drug Dendreon Pharmaceuticals LLC $282.24 14 2025
Source payment records
Nubeqa
Normalized: nubeqa
Drug Bayer Healthcare Pharmaceuticals Inc. $145.54 8 2025
Source payment records
CARVYKTI
Normalized: carvykti
Drug Janssen Biotech, Inc. $135.65 1 2025
Source payment records
RYBREVANT
Normalized: rybrevant
Drug Janssen Biotech, Inc. $135.65 1 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug Sumitomo Pharma America, Inc. $130.91 6 2025
Source payment records
ZUSDURI
Normalized: zusduri
Drug UROGEN PHARMA, INC. $121.40 1 2025
Source payment records
Camcevi
Normalized: camcevi
Drug ACCORD HEALTHCARE, INC. $92.86 6 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $83.97 5 2025
Source payment records
PLUVICTO
Normalized: pluvicto
Drug Novartis Pharmaceuticals Corporation $80.88 4 2025
Source payment records
LYNPARZA
Normalized: lynparza
Biological, Drug AstraZeneca Pharmaceuticals LP, Merck Sharp & Dohme LLC $76.41 4 2025
Source payment records
COOK
Normalized: cook
Device Cook Medical LLC $56.29 2 2025
Source payment records
Lumenis Pulse 120H
Normalized: lumenis pulse 120h
Device Boston Scientific Corporation $49.01 1 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $43.36 2 2025
Source payment records
ADSTILADRIN
Normalized: adstiladrin
Biological Ferring Pharmaceuticals Inc. $37.11 1 2025
Source payment records
Xtandi
Normalized: xtandi
Drug Astellas Pharma US Inc $36.99 2 2025
Source payment records
AQUABEAM ROBOTIC SYSTEM
Normalized: aquabeam robotic system
Device Procept Biorobotics Corporation $33.08 1 2025
Source payment records
PROLARIS
Normalized: prolaris
Device Myriad Genetic Laboratories, Inc. $31.75 2 2025
Source payment records
CVAC ASPIRATION SYSTEM
Normalized: cvac aspiration system
Device Calyxo, Inc. $30.06 1 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $23.67 1 2025
Source payment records
POSLUMA
Normalized: posluma
Drug Blue Earth Diagnostics $21.09 1 2025
Source payment records
SpaceOAR VUE System - 10mL
Normalized: spaceoar vue system 10ml
Device Boston Scientific Corporation $18.19 1 2025
Source payment records
ILLUCCIX
Normalized: illuccix
Drug Telix Pharmaceuticals $14.22 1 2025
Source payment records
Rubraca
Normalized: rubraca
Drug pharmaand GmbH $7.83 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
GEMTESA
gemtesa
2025 Gemtesa 2024 63 exact normalized Medicare Part D
Nubeqa
nubeqa
2025 Nubeqa 2024 52
Beneficiary count suppressed
exact normalized Medicare Part D
ORGOVYX
orgovyx
2025 Orgovyx 2024 68 exact normalized Medicare Part D
Xtandi
xtandi
2025 Xtandi 2024 229 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
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Myrbetriq
open payments reported associated product
CMS Open Payments — General Payments
16 supporting records · 16 recipient NPIs · example record 1238599014
Myrbetriq · 2024
Exact normalized brand match · 1 Part D row
46 12
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
229 34
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Nubeqa
open payments reported associated product
CMS Open Payments — General Payments
24369 supporting records · 9557 recipient NPIs · example record 1225434669
Nubeqa · 2024
Exact normalized brand match · 1 Part D row
52 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
30 suppressed by CMS
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 GEMTESA
open payments reported associated product
CMS Open Payments — General Payments
61692 supporting records · 22152 recipient NPIs · example record 1176593503
Gemtesa · 2024
Exact normalized brand match · 1 Part D row
63 19
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 ORGOVYX
open payments reported associated product
CMS Open Payments — General Payments
17129 supporting records · 6223 recipient NPIs · example record 1176593507
Orgovyx · 2024
Exact normalized brand match · 1 Part D row
68 17

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
XtandiEnzalutamide22934
FinasterideFinasteride21956
Tamsulosin HclTamsulosin Hcl17962
OrgovyxRelugolix6817
GemtesaVibegron6319
NubeqaDarolutamide52suppressed
MyrbetriqMirabegron4612
Oxycodone HclOxycodone Hcl4441
ErleadaApalutamide30suppressed
Oxybutynin Chloride ErOxybutynin Chloride28suppressed
Abiraterone AcetateAbiraterone Acetate24suppressed
PrednisonePrednisone23suppressed
TadalafilTadalafil20suppressed
Alfuzosin Hcl ErAlfuzosin Hcl16suppressed
NitrofurantoinNitrofurantoin Macrocrystal16suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1616
Trospium ChlorideTrospium Chloride16suppressed

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 $1,666.26 · 70 records Dendreon Pharmaceuticals LLC ADSTILADRIN, AQUABEAM ROBOTIC SYSTEM, BOTOX, CARVYKTI, COOK, CVAC ASPIRATION SYSTEM, Camcevi, GEMTESA, ILLUCCIX, KEYTRUDA, LYNPARZA, Lumenis Pulse 120H, Nubeqa, ORGOVYX, PLUVICTO, POSLUMA, PROLARIS, PROVENGE, RYBREVANT, Rubraca, SpaceOAR VUE System - 10mL, Xtandi, ZUSDURI 6
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