Healthcare provider profile · identity verified

Ryan Robert Mertens, DO

Pulmonary Disease · WEST DES MOINES, IA · NPI 1487965372

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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
Trelegy ElliptaFluticasone/Umeclidin/Vilanter20952
Incruse ElliptaUmeclidinium Bromide12720
Albuterol Sulfate HfaAlbuterol Sulfate12047
Fluticasone-SalmeterolFluticasone Propion/Salmeterol12031
PrednisonePrednisone11981
Breo ElliptaFluticasone/Vilanterol11624
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr8620
Montelukast SodiumMontelukast Sodium7121
Advair HfaFluticasone Propion/Salmeterol7018
Stiolto RespimatTiotropium Br/Olodaterol Hcl6815
AzithromycinAzithromycin6720
Spiriva HandihalerTiotropium Bromide6617
SymbicortBudesonide/Formoterol Fumarate5814
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate5512
Ipratropium BromideIpratropium Bromide44suppressed
Pantoprazole SodiumPantoprazole Sodium35suppressed
Bevespi AerosphereGlycopyrrolate/Formoterol Fum32suppressed
Fluticasone PropionateFluticasone Propionate2712
OmeprazoleOmeprazole24suppressed
DuleraMometasone/Formoterol23suppressed
Ventolin HfaAlbuterol Sulfate2011
Arnuity ElliptaFluticasone Furoate19suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol19suppressed
Combivent RespimatIpratropium/Albuterol Sulfate17suppressed
Wixela InhubFluticasone Propion/Salmeterol17suppressed
LevofloxacinLevofloxacin1614
MethotrexateMethotrexate Sodium16suppressed
Spiriva RespimatTiotropium Bromide15suppressed
Folic AcidFolic Acid13suppressed
Trazodone HclTrazodone Hcl12suppressed
Advair DiskusFluticasone Propion/Salmeterol11suppressed
Asmanex HfaMometasone Furoate11suppressed
Tiotropium BromideTiotropium Bromide11suppressed

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
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