Healthcare provider profile · identity verified

Cassandra Markham

Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family · EAST MEADOW, NY · NPI 1417659228

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 Cassandra Markham received $1,559.17 in general payments during 2025 across 86 reported records.

ABBVIE INC. accounted for 37.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 16 associated products.

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

ABBVIE 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 BOTOX as an associated drug or biological on 140321 records involving 30103 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Botox by this doctor in 2024.

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 NURTEC ODT as an associated drug or biological on 217574 records involving 54025 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Nurtec Odt by this doctor in 2024.

SK Life Science, 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 XCOPRI as an associated drug or biological on 1992 records involving 782 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Xcopri by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,559.17

86 reported records · 15 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
ABBVIE INC. Unresolved — no canonical attribution shown $586.6837.6%342025
SK Life Science, Inc. SK Life Science, Inc.
exact · evidence 2025-04-03
$206.3113.2%162025
Neurelis, Inc. Neurelis, Inc.
exact · evidence 2025-02-20
$160.6410.3%102025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $138.778.9%42025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $100.526.5%52025
Eisai Inc. Unresolved — no canonical attribution shown $78.275.0%42025
PFIZER INC. Unresolved — no canonical attribution shown $75.924.9%42025
Grifols USA, LLC Unresolved — no canonical attribution shown $39.132.5%12025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $35.252.3%22025
Alnylam Pharmaceuticals Inc. Unresolved — no canonical attribution shown $33.112.1%12025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $21.981.4%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $21.831.4%12025
Lundbeck LLC Unresolved — no canonical attribution shown $21.061.4%12025
MDD US Operations, LLC Unresolved — no canonical attribution shown $20.681.3%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $19.021.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,559.1786

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
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $360.26 21 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $332.21 19 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $166.69 10 2025
Source payment records
VALTOCO
Normalized: valtoco
Drug Neurelis, Inc. $160.64 10 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $138.77 4 2025
Source payment records
KESIMPTA
Normalized: kesimpta
Drug Novartis Pharmaceuticals Corporation $100.52 5 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $78.27 4 2025
Source payment records
PANZYGA
Normalized: panzyga
Biological PFIZER INC. $75.92 4 2025
Source payment records
OCTAGAM IMMUNE GLOBULIN (HUMAN)
Normalized: octagam immune globulin human
Drug PFIZER INC. $53.38 3 2025
Source payment records
Gamunex-C
Normalized: gamunex c
Biological Grifols USA, LLC $39.13 1 2025
Source payment records
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $35.25 2 2025
Source payment records
AMVUTTRA
Normalized: amvuttra
Drug Alnylam Pharmaceuticals Inc. $33.11 1 2025
Source payment records
ZEPOSIA
Normalized: zeposia
Drug E.R. Squibb & Sons, L.L.C. $21.83 1 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $21.06 1 2025
Source payment records
Gocovri
Normalized: gocovri
Drug MDD US Operations, LLC $20.68 1 2025
Source payment records
WAINUA
Normalized: wainua
Drug AstraZeneca Pharmaceuticals LP $19.02 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
BOTOX
botox
2025 Botox 2024 27 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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 BOTOX
open payments reported associated product
CMS Open Payments — General Payments
140321 supporting records · 30103 recipient NPIs · example record 1201352642
Botox · 2024
Exact normalized brand match · 1 Part D row
27 12
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 NURTEC ODT
open payments reported associated product
CMS Open Payments — General Payments
217574 supporting records · 54025 recipient NPIs · example record 1228794063
Nurtec Odt · 2024
Exact normalized brand match · 1 Part D row
20 suppressed by CMS
SK Life Science, Inc.
Exact reporting entity; no affiliate inference
2025 XCOPRI
open payments reported associated product
CMS Open Payments — General Payments
1992 supporting records · 782 recipient NPIs · example record 1252276115
Xcopri · 2024
Exact normalized brand match · 1 Part D row
20 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
Donepezil HclDonepezil Hcl265112
GabapentinGabapentin264101
Memantine HclMemantine Hcl18278
Duloxetine HclDuloxetine Hcl17556
Carbidopa-LevodopaCarbidopa/Levodopa11242
ClonazepamClonazepam8727
Escitalopram OxalateEscitalopram Oxalate8737
LevetiracetamLevetiracetam7724
PregabalinPregabalin6317
OxcarbazepineOxcarbazepine5519
Quetiapine FumarateQuetiapine Fumarate4118
BaclofenBaclofen4015
PrimidonePrimidone3614
Trazodone HclTrazodone Hcl3416
MeloxicamMeloxicam3222
PhenobarbitalPhenobarbital31suppressed
Ropinirole HclRopinirole Hcl31suppressed
BotoxOnabotulinumtoxina2712
RizatriptanRizatriptan Benzoate25suppressed
Sumatriptan SuccinateSumatriptan Succinate24suppressed
RivastigmineRivastigmine Tartrate2211
Oxtellar XrOxcarbazepine21suppressed
Nurtec OdtRimegepant Sulfate20suppressed
XcopriCenobamate20suppressed
AlprazolamAlprazolam19suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine19suppressed
Naratriptan HclNaratriptan Hcl19suppressed
PrednisonePrednisone19suppressed
TeriflunomideTeriflunomide18suppressed
Nortriptyline HclNortriptyline Hcl17suppressed
Tizanidine HclTizanidine Hcl1711
DiazepamDiazepam1511
LamotrigineLamotrigine15suppressed
MethocarbamolMethocarbamol15suppressed
Memantine Hcl ErMemantine Hcl14suppressed
Paroxetine HclParoxetine Hcl14suppressed
Propranolol Hcl ErPropranolol Hcl14suppressed
Divalproex SodiumDivalproex Sodium13suppressed
RytaryCarbidopa/Levodopa13suppressed
Valproic AcidValproic Acid (As Sodium Salt)13suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa12suppressed
Citalopram HbrCitalopram Hydrobromide12suppressed
Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov5012suppressed
RivastigmineRivastigmine11suppressed
Selegiline HclSelegiline Hcl11suppressed

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 $1,559.17 · 86 records ABBVIE INC. AMVUTTRA, BOTOX, Gamunex-C, Gocovri, INGREZZA, KESIMPTA, Leqembi, OCTAGAM IMMUNE GLOBULIN (HUMAN), PANZYGA, QULIPTA, REXULTI, UBRELVY, ULTOMIRIS, VALTOCO, WAINUA, ZEPOSIA 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