Healthcare provider profile · identity verified

Derek Rainwater, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · BOSSIER CITY, LA · NPI 1548767437

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 Derek Rainwater, MD received $1,211.81 in general payments during 2025 across 56 reported records.

Novo Nordisk Inc accounted for 19.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 27 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Jardiance, Kerendia, Mounjaro, Ozempic.

Bayer Healthcare Pharmaceuticals 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 Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 38 claims for Kerendia by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 47 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 47 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 126 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 18 claims for Trulicity 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 80 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,211.81

56 reported records · 19 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 $233.1319.2%92025
Corcept Therapeutics Unresolved — no canonical attribution shown $147.3312.2%72025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $146.2812.1%72025
Lilly USA, LLC Unresolved — no canonical attribution shown $105.998.8%52025
Amgen Inc. Unresolved — no canonical attribution shown $103.448.5%52025
Tandem Diabetes Care, Inc. Unresolved — no canonical attribution shown $77.906.4%42025
BETA BIONICS, INC. Unresolved — no canonical attribution shown $53.084.4%32025
Insulet Corporation Unresolved — no canonical attribution shown $46.173.8%22025
SANOFI-AVENTIS U.S. LLC Unresolved — no canonical attribution shown $45.183.7%22025
Sequel Med Tech, LLC Unresolved — no canonical attribution shown $45.173.7%22025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$38.963.2%12025
Dexcom, Inc. Unresolved — no canonical attribution shown $35.522.9%22025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $23.541.9%12025
RECORDATI_RARE_DISEASES_INC. Unresolved — no canonical attribution shown $22.381.9%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $18.551.5%12025
PFIZER INC. Unresolved — no canonical attribution shown $17.971.5%12025
CeQur Corporation Unresolved — no canonical attribution shown $17.921.5%12025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $17.501.4%12025
Esperion Therapeutics, Inc. Unresolved — no canonical attribution shown $15.801.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,211.8156

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
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $197.87 7 2025
Source payment records
Korlym
Normalized: korlym
Drug Corcept Therapeutics $147.33 7 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $146.28 7 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $105.99 5 2025
Source payment records
t:slim X2 Insulin Pump with Control-IQ
Normalized: t slim x2 insulin pump with control iq
Device Tandem Diabetes Care, Inc. $77.90 4 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $54.18 3 2025
Source payment records
iLet Bionic Pancreas
Normalized: ilet bionic pancreas
Device BETA BIONICS, INC. $53.08 3 2025
Source payment records
iLet Insulin Infusion Kit Contact Detach
Normalized: ilet insulin infusion kit contact detach
Device BETA BIONICS, INC. $53.08 3 2025
Source payment records
iLet Insulin Infusion Kit Inset
Normalized: ilet insulin infusion kit inset
Device BETA BIONICS, INC. $53.08 3 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $46.17 2 2025
Source payment records
TZIELD
Normalized: tzield
Biological SANOFI-AVENTIS U.S. LLC $45.18 2 2025
Source payment records
TWIIST
Normalized: twiist
Device Sequel Med Tech, LLC $45.17 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $43.03 2 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $41.58 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $39.25 2 2025
Source payment records
MINIMED 780G
Normalized: minimed 780g
Device Medtronic, Inc. $38.96 1 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $35.52 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $35.26 2 2025
Source payment records
CRENESSITY
Normalized: crenessity
Drug Neurocrine BioSciences, Inc. $23.54 1 2025
Source payment records
TEPEZZA
Normalized: tepezza
Biological Amgen Inc. $22.61 1 2025
Source payment records
ISTURISA
Normalized: isturisa
Drug RECORDATI_RARE_DISEASES_INC. $22.38 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $18.93 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $18.55 1 2025
Source payment records
SOMAVERT
Normalized: somavert
Drug PFIZER INC. $17.97 1 2025
Source payment records
CeQur Simplicity
Normalized: cequr simplicity
Device CeQur Corporation $17.92 1 2025
Source payment records
GVOKE HYPOPEN
Normalized: gvoke hypopen
Drug Xeris Pharmaceuticals, Inc. $17.50 1 2025
Source payment records
NEXLETOL
Normalized: nexletol
Drug Esperion Therapeutics, Inc. $15.80 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
JARDIANCE
jardiance
2025 Jardiance 2024 47 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 38
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 126 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 80 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
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 2024
Exact normalized brand match · 1 Part D row
38 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
47 15
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
47 15
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
126 22
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
18 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
80 26

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
MounjaroTirzepatide12622
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog11425
OzempicSemaglutide8026
Synjardy XrEmpagliflozin/Metformin Hcl7926
Levothyroxine SodiumLevothyroxine Sodium7625
Tresiba Flextouch U-200Insulin Degludec6215
Trijardy XrEmpaglifloz/Linaglip/Metformin5420
JardianceEmpagliflozin4715
KerendiaFinerenone38suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)3511
Metformin Hcl ErMetformin Hcl3516
Xigduo XrDapaglifloz Propaned/Metformin32suppressed
Novolog FlexpenInsulin Aspart31suppressed
GlyxambiEmpagliflozin/Linagliptin2912
Gvoke Hypopen 2-PackGlucagon2824
Tresiba Flextouch U-100Insulin Degludec21suppressed
Cinacalcet HclCinacalcet Hcl20suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic20suppressed
SynthroidLevothyroxine Sodium19suppressed
TrulicityDulaglutide18suppressed
Losartan PotassiumLosartan Potassium17suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
Droplet Pen NeedlePen Needle, Diabetic15suppressed
Glipizide ErGlipizide13suppressed
MethimazoleMethimazole13suppressed
SpironolactoneSpironolactone12suppressed
Atorvastatin CalciumAtorvastatin Calcium11suppressed
DexamethasoneDexamethasone11suppressed
GabapentinGabapentin11suppressed
Humalog Kwikpen U-200Insulin Lispro11suppressed

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 $1,211.81 · 56 records Novo Nordisk Inc CRENESSITY, CeQur Simplicity, Dexcom G6 Transmitter, EVENITY, GVOKE HYPOPEN, ISTURISA, JARDIANCE, Kerendia, Korlym, MINIMED 780G, MOUNJARO, NEXLETOL, Omnipod, Ozempic, PROLIA, REPATHA, Rybelsus, SOMAVERT, TEPEZZA, TWIIST, TZIELD, Wegovy, ZEPBOUND, iLet Bionic Pancreas, iLet Insulin Infusion Kit Contact Detach, iLet Insulin Infusion Kit Inset, t:slim X2 Insulin Pump with Control-IQ 6
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