Healthcare provider profile · identity verified

Marja J Sprock, M.D.

Allopathic & Osteopathic Physicians|Obstetrics & Gynecology · ROCKLEDGE, FL · NPI 1336216704

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 Marja J Sprock, M.D. received $3,395.89 in general payments during 2025 across 51 reported records.

Medtronic, Inc. accounted for 46.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 12 associated products.

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

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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Linzess by this doctor in 2024.

Astellas Pharma 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 Myrbetriq as an associated drug or biological on 16 records involving 16 distinct recipient NPIs. Public Medicare Part D data also shows 91 claims for Myrbetriq by this doctor in 2024.

Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 83 claims for Gemtesa by this doctor in 2024.

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

Payment overview · 2025

General Payments

$3,395.89

51 reported records · 13 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
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$1,573.5246.3%262025
Boston Scientific Corporation Unresolved — no canonical attribution shown $326.239.6%52025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $274.328.1%22025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $245.117.2%22025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $165.104.9%32025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $137.804.1%62025
Amgen Inc. Unresolved — no canonical attribution shown $125.003.7%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $125.003.7%12025
ABBVIE INC. Unresolved — no canonical attribution shown $124.463.7%12025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $124.463.7%12025
Syndax Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $123.693.6%12025
Valencia Technologies Corporation Unresolved — no canonical attribution shown $27.540.8%12025
MILLICENT US INC Unresolved — no canonical attribution shown $23.660.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,354.6742
Travel and Lodging$1,041.229

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
INTERSTIM
Normalized: interstim
Device Medtronic, Inc. $380.35 14 2025
Source payment records
Axonics
Normalized: axonics
Device Boston Scientific Corporation $326.23 5 2025
Source payment records
CARVYKTI
Normalized: carvykti
Drug Janssen Biotech, Inc. $274.32 2 2025
Source payment records
RYBREVANT
Normalized: rybrevant
Drug Janssen Biotech, Inc. $274.32 2 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $165.10 3 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $137.80 6 2025
Source payment records
BLINCYTO
Normalized: blincyto
Biological Amgen Inc. $125.00 1 2025
Source payment records
OPDIVO
Normalized: opdivo
Biological E.R. Squibb & Sons, L.L.C. $125.00 1 2025
Source payment records
ELAHERE
Normalized: elahere
Drug ABBVIE INC. $124.46 1 2025
Source payment records
Nubeqa
Normalized: nubeqa
Drug Bayer Healthcare Pharmaceuticals Inc. $124.46 1 2025
Source payment records
eCoin Device Kit
Normalized: ecoin device kit
Device Valencia Technologies Corporation $27.54 1 2025
Source payment records
INTRAROSA
Normalized: intrarosa
Drug MILLICENT US INC $23.66 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
GEMTESA
gemtesa
2025 Gemtesa 2024 83 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 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Myrbetriq
open payments reported associated product
CMS Open Payments — General Payments
16 supporting records · 16 recipient NPIs · example record 1238599014
Myrbetriq · 2024
Exact normalized brand match · 1 Part D row
91 39
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 GEMTESA
open payments reported associated product
CMS Open Payments — General Payments
61692 supporting records · 22152 recipient NPIs · example record 1176593503
Gemtesa · 2024
Exact normalized brand match · 1 Part D row
83 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
EstradiolEstradiol664375
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst147110
ProgesteroneProgesterone, Micronized11943
MyrbetriqMirabegron9139
Estradiol (Once Weekly)Estradiol9034
GemtesaVibegron8329
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip4934
EstringEstradiol4918
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4027
OsphenaOspemifene37suppressed
Fosfomycin TromethamineFosfomycin Tromethamine3322
Estradiol (Twice Weekly)Estradiol31suppressed
Ciprofloxacin HclCiprofloxacin Hcl2825
MeloxicamMeloxicam2825
Doxycycline HyclateDoxycycline Hyclate2724
LinzessLinaclotide25suppressed
Clobetasol PropionateClobetasol Propionate2419
FluconazoleFluconazole2114
ValacyclovirValacyclovir Hcl21suppressed
SsdSilver Sulfadiazine1915
CefaclorCefaclor1614
MisoprostolMisoprostol14suppressed
LevofloxacinLevofloxacin1311
MetronidazoleMetronidazole1311
Amitriptyline HclAmitriptyline Hcl12suppressed
CephalexinCephalexin1111
Triamcinolone AcetonideTriamcinolone Acetonide11suppressed

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 $3,395.89 · 51 records Medtronic, Inc. Axonics, BLINCYTO, CARVYKTI, ELAHERE, GEMTESA, INTERSTIM, INTRAROSA, Nubeqa, OPDIVO, RYBREVANT, Veozah, eCoin Device Kit 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