Healthcare provider profile · identity verified

Marissa Mach

Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family · OWEGO, NY · NPI 1881397818

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 Marissa Mach received $135.00 in general payments during 2025 across 1 reported records.

Astellas Pharma US Inc accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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

Payment overview · 2025

General Payments

$135.00

1 reported records · 1 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
Astellas Pharma US Inc Unresolved — no canonical attribution shown $135.00100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$135.001

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
Cresemba
Normalized: cresemba
Drug Astellas Pharma US Inc $135.00 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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
Atorvastatin CalciumAtorvastatin Calcium17660
Levothyroxine SodiumLevothyroxine Sodium10335
Fluticasone PropionateFluticasone Propionate6933
Amlodipine BesylateAmlodipine Besylate6332
OmeprazoleOmeprazole5926
LisinoprilLisinopril5824
Metoprolol SuccinateMetoprolol Succinate5723
Albuterol Sulfate HfaAlbuterol Sulfate4830
Pantoprazole SodiumPantoprazole Sodium4421
Metformin HclMetformin Hcl4212
Fluoxetine HclFluoxetine Hcl35suppressed
Losartan PotassiumLosartan Potassium3516
PregabalinPregabalin34suppressed
Sertraline HclSertraline Hcl3317
Tamsulosin HclTamsulosin Hcl3216
EliquisApixaban3111
FamotidineFamotidine31suppressed
HydrochlorothiazideHydrochlorothiazide3113
Rosuvastatin CalciumRosuvastatin Calcium3111
ArexvyRsvpref3 Antigen/As01e/Pf2929
GabapentinGabapentin2915
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2925
Cyclobenzaprine HclCyclobenzaprine Hcl2718
PrednisonePrednisone2723
Bupropion XlBupropion Hcl2612
Trazodone HclTrazodone Hcl25suppressed
Pravastatin SodiumPravastatin Sodium24suppressed
SimvastatinSimvastatin24suppressed
Boostrix TdapDiphth,pertuss(Acell),tet Vac2323
OzempicSemaglutide23suppressed
ClopidogrelClopidogrel Bisulfate2111
Esomeprazole MagnesiumEsomeprazole Magnesium21suppressed
FarxigaDapagliflozin Propanediol21suppressed
Pioglitazone HclPioglitazone Hcl21suppressed
Doxycycline HyclateDoxycycline Hyclate1919
Trelegy ElliptaFluticasone/Umeclidin/Vilanter19suppressed
CarvedilolCarvedilol18suppressed
Tramadol HclTramadol Hcl18suppressed
XareltoRivaroxaban18suppressed
TrulicityDulaglutide17suppressed
Duloxetine HclDuloxetine Hcl16suppressed
FurosemideFurosemide16suppressed
Meclizine HclMeclizine Hcl1612
MeloxicamMeloxicam16suppressed
Oxybutynin Chloride ErOxybutynin Chloride16suppressed
RamiprilRamipril16suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1613
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1413
CephalexinCephalexin1411
Enalapril MaleateEnalapril Maleate14suppressed
Metformin Hcl ErMetformin Hcl14suppressed
Olmesartan MedoxomilOlmesartan Medoxomil14suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
Diclofenac SodiumDiclofenac Sodium13suppressed
SynthroidLevothyroxine Sodium13suppressed
HydrocortisoneHydrocortisone12suppressed
IbuprofenIbuprofen12suppressed
Montelukast SodiumMontelukast Sodium12suppressed
Alendronate SodiumAlendronate Sodium11suppressed
Buspirone HclBuspirone Hcl11suppressed
ClonazepamClonazepam11suppressed
FluconazoleFluconazole11suppressed
JardianceEmpagliflozin11suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide11suppressed

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 $135.00 · 1 records Astellas Pharma US Inc Cresemba
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