Healthcare provider profile · identity verified

Bruce Barker, MD

Allopathic & Osteopathic Physicians|Internal Medicine · DELAWARE, OH · NPI 1972544013

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 Bruce Barker, MD received $56,941.64 in general payments during 2025 across 76 reported records.

Lilly USA, LLC accounted for 94.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

Eli Lilly and Company 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 15 records involving 11 distinct recipient NPIs. Public Medicare Part D data also shows 58 claims for Jardiance by this doctor in 2024.

Eli Lilly and Company 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 176 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 323 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 58 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 323 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 81 claims for Trulicity by this doctor in 2024.

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

Payment overview · 2025

General Payments

$56,941.64

76 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
Lilly USA, LLC Unresolved — no canonical attribution shown $53,525.5694.0%732025
Eli Lilly and Company Unresolved — no canonical attribution shown $3,416.086.0%32025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$46,725.0045
Consulting Fee$6,475.003
Travel and Lodging$2,560.4315
Food and Beverage$1,181.2113

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
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $49,038.61 70 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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
Eli Lilly and Company
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
15 supporting records · 11 recipient NPIs · example record 1186556234
Jardiance · 2024
Exact normalized brand match · 1 Part D row
58 11
Eli Lilly and Company
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
176 supporting records · 33 recipient NPIs · example record 1186466331
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
323 42
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
58 11
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
323 42
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
81 16

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
Metformin Hcl ErMetformin Hcl37077
TopiramateTopiramate35462
MounjaroTirzepatide32342
OzempicSemaglutide27548
Bupropion XlBupropion Hcl27145
Bupropion Hcl SrBupropion Hcl15539
Naltrexone HclNaltrexone Hcl13832
Levothyroxine SodiumLevothyroxine Sodium11917
Metformin HclMetformin Hcl10422
ZonisamideZonisamide10423
TrulicityDulaglutide8116
JardianceEmpagliflozin5811
AllopurinolAllopurinol54suppressed
LetrozoleLetrozole5412
WegovySemaglutide46suppressed
Ondansetron OdtOndansetron4015
LinzessLinaclotide25suppressed
Doxepin HclDoxepin Hcl21suppressed
FarxigaDapagliflozin Propanediol21suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl21suppressed
Promethazine HclPromethazine Hcl21suppressed
Fluoxetine HclFluoxetine Hcl19suppressed
VyvanseLisdexamfetamine Dimesylate19suppressed
Lisdexamfetamine DimesylateLisdexamfetamine Dimesylate17suppressed
JanuviaSitagliptin Phosphate16suppressed
LactuloseLactulose16suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic1513
Liothyronine SodiumLiothyronine Sodium12suppressed
Potassium ChloridePotassium Chloride12suppressed
SpironolactoneSpironolactone12suppressed
SynthroidLevothyroxine Sodium12suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine11suppressed
Folic AcidFolic Acid11suppressed

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 $56,941.64 · 76 records Lilly USA, LLC ZEPBOUND 5
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