Healthcare provider profile · identity verified

Kristen Ritter

Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner · BUFFALO, NY · NPI 1194100677

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 Kristen Ritter received $169.01 in general payments during 2025 across 4 reported records.

ACADIA Pharmaceuticals Inc accounted for 84.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 4 associated products.

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

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 161 claims for Eliquis by this doctor in 2024.

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

Payment overview · 2025

General Payments

$169.01

4 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
ACADIA Pharmaceuticals Inc Unresolved — no canonical attribution shown $143.4884.9%32025
PFIZER INC. Unresolved — no canonical attribution shown $25.5315.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$169.014

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
NUPLAZID
Normalized: nuplazid
Drug ACADIA Pharmaceuticals Inc $143.48 3 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $25.53 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $25.53 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $25.53 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
ELIQUIS
eliquis
2025 Eliquis 2024 161 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
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
161 29

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
EliquisApixaban16129
Atorvastatin CalciumAtorvastatin Calcium15742
GabapentinGabapentin14435
Hydralazine HclHydralazine Hcl11829
LisinoprilLisinopril9024
Pantoprazole SodiumPantoprazole Sodium8928
Amlodipine BesylateAmlodipine Besylate8430
Potassium ChloridePotassium Chloride8422
FurosemideFurosemide7620
Metoprolol SuccinateMetoprolol Succinate7627
BaclofenBaclofen5811
LevetiracetamLevetiracetam5716
OmeprazoleOmeprazole5212
Trazodone HclTrazodone Hcl5212
Metoprolol TartrateMetoprolol Tartrate5115
Rosuvastatin CalciumRosuvastatin Calcium5015
Levothyroxine SodiumLevothyroxine Sodium4816
BumetanideBumetanide4515
Tamsulosin HclTamsulosin Hcl4516
NystatinNystatin4416
MirtazapineMirtazapine4214
ClopidogrelClopidogrel Bisulfate4112
LantusInsulin Glargine,hum.Rec.Anlog4115
Escitalopram OxalateEscitalopram Oxalate3911
Sertraline HclSertraline Hcl39suppressed
Losartan PotassiumLosartan Potassium36suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2916
CarvedilolCarvedilol27suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate26suppressed
LactuloseLactulose24suppressed
Metformin HclMetformin Hcl24suppressed
TrulicityDulaglutide24suppressed
Buspirone HclBuspirone Hcl22suppressed
Clonidine HclClonidine Hcl21suppressed
SpironolactoneSpironolactone20suppressed
Duloxetine HclDuloxetine Hcl18suppressed
EntrestoSacubitril/Valsartan18suppressed
HydrochlorothiazideHydrochlorothiazide18suppressed
Labetalol HclLabetalol Hcl18suppressed
PrednisonePrednisone1811
Metformin Hcl ErMetformin Hcl17suppressed
RisperidoneRisperidone17suppressed
Insulin LisproInsulin Lispro16suppressed
SsdSilver Sulfadiazine16suppressed
Doxycycline HyclateDoxycycline Hyclate1511
MethimazoleMethimazole15suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
JanuviaSitagliptin Phosphate14suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate13suppressed
Carbamazepine ErCarbamazepine12suppressed
FamotidineFamotidine12suppressed
JardianceEmpagliflozin12suppressed
Midodrine HclMidodrine Hcl12suppressed
NuedextaDextromethorphan Hbr/Quinidine12suppressed
SimbrinzaBrinzolamide/Brimonidine Tart12suppressed
SotalolSotalol Hcl12suppressed
Alendronate SodiumAlendronate Sodium11suppressed
Chlorhexidine GluconateChlorhexidine Gluconate11suppressed
Incruse ElliptaUmeclidinium Bromide11suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog11suppressed
Montelukast SodiumMontelukast Sodium11suppressed
OxcarbazepineOxcarbazepine11suppressed
PhenytoinPhenytoin11suppressed
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 $169.01 · 4 records ACADIA Pharmaceuticals Inc ELIQUIS, NUPLAZID, NURTEC ODT, PAXLOVID 1
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