Healthcare provider profile · identity verified

Catherine J Markin, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease · PORTLAND, OR · NPI 1285731059

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 Catherine J Markin, MD received $98.07 in general payments during 2025 across 3 reported records.

Actelion Pharmaceuticals US, Inc. accounted for 80.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Uptravi.

Actelion Pharmaceuticals 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 OPSUMIT as an associated drug or biological on 18955 records involving 8899 distinct recipient NPIs. Public Medicare Part D data also shows 137 claims for Opsumit by this doctor in 2024.

Actelion Pharmaceuticals 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 UPTRAVI as an associated drug or biological on 21562 records involving 9341 distinct recipient NPIs. Public Medicare Part D data also shows 112 claims for Uptravi by this doctor in 2024.

GlaxoSmithKline, 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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Trelegy Ellipta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$98.07

3 reported records · 2 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
Actelion Pharmaceuticals US, Inc. Unresolved — no canonical attribution shown $79.0080.5%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $19.0719.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$98.073

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
UPTRAVI
Normalized: uptravi
Drug Actelion Pharmaceuticals US, Inc. $65.25 1 2025
Source payment records
NUCALA
Normalized: nucala
Biological GlaxoSmithKline, LLC. $19.07 1 2025
Source payment records
OPSYNVI
Normalized: opsynvi
Drug Actelion Pharmaceuticals US, Inc. $13.75 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
UPTRAVI
uptravi
2025 Uptravi 2024 112
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
Actelion Pharmaceuticals US, Inc.
Exact reporting entity; no affiliate inference
2025 OPSUMIT
open payments reported associated product
CMS Open Payments — General Payments
18955 supporting records · 8899 recipient NPIs · example record 1174163978
Opsumit · 2024
Exact normalized brand match · 1 Part D row
137 14
Actelion Pharmaceuticals US, Inc.
Exact reporting entity; no affiliate inference
2025 UPTRAVI
open payments reported associated product
CMS Open Payments — General Payments
21562 supporting records · 9341 recipient NPIs · example record 1174163984
Uptravi · 2024
Exact normalized brand match · 1 Part D row
112 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
11 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
OpsumitMacitentan13714
UptraviSelexipag112suppressed
Potassium ChloridePotassium Chloride8419
FurosemideFurosemide8120
TadalafilTadalafil7312
VeletriEpoprostenol Sodium52suppressed
AmbrisentanAmbrisentan41suppressed
Sildenafil CitrateSildenafil Citrate35suppressed
Albuterol Sulfate HfaAlbuterol Sulfate31suppressed
XareltoRivaroxaban31suppressed
AdempasRiociguat29suppressed
WinrevairSotatercept-Csrk29suppressed
RemodulinTreprostinil Sodium18suppressed
PrednisonePrednisone17suppressed
FamotidineFamotidine16suppressed
LetairisAmbrisentan14suppressed
TorsemideTorsemide12suppressed
Folic AcidFolic Acid11suppressed
Imatinib MesylateImatinib Mesylate11suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter11suppressed

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 $98.07 · 3 records Actelion Pharmaceuticals US, Inc. NUCALA, OPSYNVI, UPTRAVI 3
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