Healthcare provider profile · identity verified

Caroline Korsten Messer, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · NEW YORK, NY · NPI 1386855047

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 Caroline Korsten Messer, MD received $2,821.17 in general payments during 2025 across 120 reported records.

Novo Nordisk Inc accounted for 13.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 35 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Afrezza, Farxiga, Jardiance, Mounjaro, Ozempic, Prolia, Synthroid, Xyosted.

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 ARMOUR THYROID as an associated drug or biological on 50 records involving 11 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Armour Thyroid by this doctor in 2024.

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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 196 claims for Synthroid by this doctor in 2024.

Amgen 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 PROLIA as an associated drug or biological on 20867 records involving 11744 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Prolia by this doctor in 2024.

Antares Pharma, 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 XYOSTED as an associated drug or biological on 18015 records involving 7619 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Xyosted by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Farxiga by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 125 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 335 claims for Mounjaro by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 33 claims for Trulicity by this doctor in 2024.

Mannkind Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported AFREZZA as an associated drug or biological on 10645 records involving 3625 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Afrezza by this doctor in 2024.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 174 claims for Ozempic by this doctor in 2024.

Novo Nordisk 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Rybelsus by this doctor in 2024.

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

Payment overview · 2025

General Payments

$2,821.17

120 reported records · 24 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $369.9613.1%182025
Lilly USA, LLC Unresolved — no canonical attribution shown $367.2013.0%182025
Mannkind Corporation Unresolved — no canonical attribution shown $308.9510.9%122025
Amgen Inc. Unresolved — no canonical attribution shown $244.458.7%122025
ABBVIE INC. Unresolved — no canonical attribution shown $186.986.6%102025
SANOFI-AVENTIS U.S. LLC Unresolved — no canonical attribution shown $179.436.4%72025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $172.926.1%72025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $142.835.1%72025
VERTEX PHARMACEUTICALS INCORPORATED Unresolved — no canonical attribution shown $130.644.6%12025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $128.074.5%42025
Radius Health, Inc. Unresolved — no canonical attribution shown $116.694.1%32025
Chiesi USA, Inc. Unresolved — no canonical attribution shown $72.882.6%32025
PFIZER INC. Unresolved — no canonical attribution shown $70.142.5%32025
Intra-Sana Laboratories Unresolved — no canonical attribution shown $61.882.2%32025
Verity Pharmaceuticals Inc. Unresolved — no canonical attribution shown $47.661.7%22025
Corcept Therapeutics Unresolved — no canonical attribution shown $44.441.6%22025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $28.621.0%12025
Ascensia Diabetes Care Us Inc. Unresolved — no canonical attribution shown $24.390.9%12025
Ascendis Pharma Endocrinology Inc Unresolved — no canonical attribution shown $23.000.8%12025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$22.990.8%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $20.870.7%12025
Insulet Corporation Unresolved — no canonical attribution shown $20.040.7%12025
TOLMAR, INC. Unresolved — no canonical attribution shown $18.470.7%12025
Currax Pharmaceuticals LLC Unresolved — no canonical attribution shown $17.670.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,821.17120

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
AFREZZA
Normalized: afrezza
Drug Mannkind Corporation $308.95 12 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $233.71 11 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $233.71 11 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $189.26 10 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $180.70 8 2025
Source payment records
TZIELD
Normalized: tzield
Biological SANOFI-AVENTIS U.S. LLC $179.43 7 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $172.92 7 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $143.15 7 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $142.83 7 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Lilly USA, LLC $133.49 7 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $128.07 4 2025
Source payment records
Tymlos
Normalized: tymlos
Drug Radius Health, Inc. $116.69 3 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $111.71 6 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $102.28 6 2025
Source payment records
MYCAPSSA
Normalized: mycapssa
Drug Chiesi USA, Inc. $72.88 3 2025
Source payment records
GENOTROPIN
Normalized: genotropin
Drug PFIZER INC. $70.14 3 2025
Source payment records
SOMAVERT
Normalized: somavert
Drug PFIZER INC. $70.14 3 2025
Source payment records
Binosto
Normalized: binosto
Drug Radius Health, Inc. $66.13 2 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $66.00 3 2025
Source payment records
GLYCATE
Normalized: glycate
Drug Intra-Sana Laboratories $61.88 3 2025
Source payment records
RELTONE 200 MG
Normalized: reltone 200 mg
Drug Intra-Sana Laboratories $61.88 3 2025
Source payment records
RELTONE 400 MG
Normalized: reltone 400 mg
Drug Intra-Sana Laboratories $61.88 3 2025
Source payment records
Trelstar
Normalized: trelstar
Drug Verity Pharmaceuticals Inc. $47.66 2 2025
Source payment records
Korlym
Normalized: korlym
Drug Corcept Therapeutics $44.44 2 2025
Source payment records
TEPEZZA
Normalized: tepezza
Biological Amgen Inc. $35.30 2 2025
Source payment records
SYNTHROID
Normalized: synthroid
Drug ABBVIE INC. $28.86 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $28.86 1 2025
Source payment records
STRENSIQ
Normalized: strensiq
Biological Alexion Pharmaceuticals, Inc. $28.62 1 2025
Source payment records
Yorvipath
Normalized: yorvipath
Drug Ascendis Pharma Endocrinology Inc $23.00 1 2025
Source payment records
MINIMED 780G
Normalized: minimed 780g
Device Medtronic, Inc. $22.99 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $20.87 1 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $20.04 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $19.49 1 2025
Source payment records
JATENZO
Normalized: jatenzo
Drug TOLMAR, INC. $18.47 1 2025
Source payment records
CONTRAVE
Normalized: contrave
Drug Currax Pharmaceuticals LLC $17.67 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
AFREZZA
afrezza
2025 Afrezza 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 125 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 335 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 174 exact normalized Medicare Part D
PROLIA
prolia
2025 Prolia 2024 12
Beneficiary count suppressed
exact normalized Medicare Part D
SYNTHROID
synthroid
2025 Synthroid 2024 196 exact normalized Medicare Part D
XYOSTED
xyosted
2025 Xyosted 2024 26
Beneficiary count suppressed
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 ARMOUR THYROID
open payments reported associated product
CMS Open Payments — General Payments
50 supporting records · 11 recipient NPIs · example record 1201517088
Armour Thyroid · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
196 41
Amgen Inc.
Exact reporting entity; no affiliate inference
2025 PROLIA
open payments reported associated product
CMS Open Payments — General Payments
20867 supporting records · 11744 recipient NPIs · example record 1226874448
Prolia · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
Antares Pharma, Inc.
Exact reporting entity; no affiliate inference
2025 XYOSTED
open payments reported associated product
CMS Open Payments — General Payments
18015 supporting records · 7619 recipient NPIs · example record 1235880452
Xyosted · 2024
Exact normalized brand match · 1 Part D row
26 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
125 21
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
335 45
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
33 suppressed by CMS
Mannkind Corporation
Exact reporting entity; no affiliate inference
2025 AFREZZA
open payments reported associated product
CMS Open Payments — General Payments
10645 supporting records · 3625 recipient NPIs · example record 1250869202
Afrezza · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
174 38
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
24 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
MounjaroTirzepatide33545
Metformin Hcl ErMetformin Hcl20763
SynthroidLevothyroxine Sodium19641
OzempicSemaglutide17438
Levothyroxine SodiumLevothyroxine Sodium16943
JardianceEmpagliflozin12521
Amlodipine BesylateAmlodipine Besylate8619
JanuviaSitagliptin Phosphate76suppressed
Alendronate SodiumAlendronate Sodium7024
Atorvastatin CalciumAtorvastatin Calcium6318
Rosuvastatin CalciumRosuvastatin Calcium5617
LisinoprilLisinopril5215
Tresiba Flextouch U-100Insulin Degludec4515
Pioglitazone HclPioglitazone Hcl38suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic3712
ChlorthalidoneChlorthalidone35suppressed
Liothyronine SodiumLiothyronine Sodium35suppressed
TrulicityDulaglutide33suppressed
Metoprolol SuccinateMetoprolol Succinate32suppressed
Metformin HclMetformin Hcl29suppressed
XyostedTestosterone Enanthate26suppressed
Bupropion XlBupropion Hcl25suppressed
Vitamin D2Ergocalciferol (Vitamin D2)25suppressed
MinoxidilMinoxidil24suppressed
RybelsusSemaglutide24suppressed
TradjentaLinagliptin24suppressed
Escitalopram OxalateEscitalopram Oxalate23suppressed
Risedronate Sodium DrRisedronate Sodium22suppressed
SimvastatinSimvastatin21suppressed
Losartan PotassiumLosartan Potassium19suppressed
Armour ThyroidThyroid,pork18suppressed
Novolog FlexpenInsulin Aspart18suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic17suppressed
Enalapril MaleateEnalapril Maleate16suppressed
FarxigaDapagliflozin Propanediol16suppressed
MethimazoleMethimazole16suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/716suppressed
Risedronate SodiumRisedronate Sodium16suppressed
HydrochlorothiazideHydrochlorothiazide15suppressed
SpironolactoneSpironolactone15suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog14suppressed
EzetimibeEzetimibe14suppressed
InvokanaCanagliflozin14suppressed
Evenity (2 Syringes)Romosozumab-Aqqg13suppressed
Ondansetron HclOndansetron Hcl13suppressed
Zolpidem TartrateZolpidem Tartrate13suppressed
Glipizide ErGlipizide12suppressed
ProliaDenosumab12suppressed
TestosteroneTestosterone12suppressed
AfrezzaInsulin Regular, Human11suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)11suppressed

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 $2,821.17 · 120 records Novo Nordisk Inc AFREZZA, Binosto, CONTRAVE, CREON, EVENITY, FARXIGA, GENOTROPIN, GLYCATE, JARDIANCE, JATENZO, Kerendia, Korlym, LINZESS, MINIMED 780G, MOUNJARO, MYCAPSSA, Omnipod, Ozempic, PROLIA, RELTONE 200 MG, RELTONE 400 MG, REPATHA, SOMAVERT, STRENSIQ, SYNTHROID, TEPEZZA, TZIELD, Trelstar, Tymlos, UBRELVY, Veozah, Wegovy, XYOSTED, Yorvipath, ZEPBOUND 11
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