Healthcare provider profile · identity verified

Robert Callahan, MD

Allopathic & Osteopathic Physicians|Family Medicine · DES MOINES, IA · NPI 1174532865

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 Robert Callahan, MD received $122.76 in general payments during 2025 across 5 reported records.

Lilly USA, LLC accounted for 40.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 6 associated products.

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

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 35 claims for Linzess 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 18 claims for Synthroid 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 161 claims for Jardiance 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 SYNJARDY as an associated drug or biological on 33 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Synjardy 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 161 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 79 claims for Mounjaro 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 40 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 35 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

$122.76

5 reported records · 4 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 $49.7940.6%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $32.5426.5%22025
ABBVIE INC. Unresolved — no canonical attribution shown $20.4416.6%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $19.9916.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$122.765

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
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $69.78 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $20.44 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $20.44 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $18.12 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $18.12 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $14.42 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 161 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 40 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 35
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 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
35 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
18 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
161 27
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 SYNJARDY
open payments reported associated product
CMS Open Payments — General Payments
33 supporting records · 33 recipient NPIs · example record 1222725005
Synjardy · 2024
Exact normalized brand match · 1 Part D row
11 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
161 27
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
79 11
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
40 12
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
35 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
Atorvastatin CalciumAtorvastatin Calcium658160
Levothyroxine SodiumLevothyroxine Sodium39680
Amlodipine BesylateAmlodipine Besylate34896
LisinoprilLisinopril33585
OmeprazoleOmeprazole28072
Pantoprazole SodiumPantoprazole Sodium25257
Rosuvastatin CalciumRosuvastatin Calcium24669
Metformin Hcl ErMetformin Hcl22156
SimvastatinSimvastatin17845
Potassium ChloridePotassium Chloride16739
Sertraline HclSertraline Hcl16635
JardianceEmpagliflozin16127
Metoprolol SuccinateMetoprolol Succinate15337
GabapentinGabapentin15136
Tamsulosin HclTamsulosin Hcl15040
GlimepirideGlimepiride14628
HydrochlorothiazideHydrochlorothiazide13442
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen12737
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12627
Metoprolol TartrateMetoprolol Tartrate11226
Albuterol Sulfate HfaAlbuterol Sulfate11146
Trazodone HclTrazodone Hcl11125
Tramadol HclTramadol Hcl11024
Fluticasone PropionateFluticasone Propionate10826
Losartan PotassiumLosartan Potassium10834
LorazepamLorazepam10130
Duloxetine HclDuloxetine Hcl9719
Doxazosin MesylateDoxazosin Mesylate9115
AllopurinolAllopurinol9019
MounjaroTirzepatide7911
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril7817
Metformin HclMetformin Hcl7619
EzetimibeEzetimibe7419
FamotidineFamotidine7419
Fluoxetine HclFluoxetine Hcl7416
Escitalopram OxalateEscitalopram Oxalate7316
XareltoRivaroxaban73suppressed
Buspirone HclBuspirone Hcl6916
Zolpidem TartrateZolpidem Tartrate6616
EliquisApixaban6516
ClonazepamClonazepam64suppressed
FurosemideFurosemide6317
MeloxicamMeloxicam6218
Pravastatin SodiumPravastatin Sodium6120
AlprazolamAlprazolam5815
FinasterideFinasteride5612
NaproxenNaproxen4920
JanuviaSitagliptin Phosphate48suppressed
Venlafaxine Hcl ErVenlafaxine Hcl47suppressed
Tizanidine HclTizanidine Hcl4623
ClopidogrelClopidogrel Bisulfate45suppressed
Pioglitazone HclPioglitazone Hcl45suppressed
Oxybutynin Chloride ErOxybutynin Chloride44suppressed
Acetaminophen-CodeineAcetaminophen With Codeine42suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate42suppressed
Warfarin SodiumWarfarin Sodium41suppressed
FarxigaDapagliflozin Propanediol40suppressed
OzempicSemaglutide4012
AtenololAtenolol39suppressed
MirtazapineMirtazapine3811
DutasterideDutasteride37suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3711
TradjentaLinagliptin36suppressed
LinzessLinaclotide35suppressed
RybelsusSemaglutide35suppressed
AzithromycinAzithromycin3428
CarvedilolCarvedilol34suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride34suppressed
Montelukast SodiumMontelukast Sodium33suppressed
Bupropion XlBupropion Hcl31suppressed
Ondansetron HclOndansetron Hcl3111
Oxycodone HclOxycodone Hcl31suppressed
PrednisonePrednisone3124
Diclofenac SodiumDiclofenac Sodium3013
Paroxetine HclParoxetine Hcl30suppressed
PregabalinPregabalin28suppressed
NystatinNystatin27suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2720
CephalexinCephalexin2625
SpironolactoneSpironolactone26suppressed
Memantine Hcl ErMemantine Hcl25suppressed
Olmesartan MedoxomilOlmesartan Medoxomil25suppressed
Solifenacin SuccinateSolifenacin Succinate25suppressed
Benazepril HclBenazepril Hcl24suppressed
Morphine Sulfate ErMorphine Sulfate24suppressed
AripiprazoleAripiprazole23suppressed
Clonidine HclClonidine Hcl23suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid23suppressed
Citalopram HbrCitalopram Hydrobromide22suppressed
Doxycycline HyclateDoxycycline Hyclate2116
Donepezil HclDonepezil Hcl20suppressed
GlipizideGlipizide20suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2018
Trelegy ElliptaFluticasone/Umeclidin/Vilanter20suppressed
Breo ElliptaFluticasone/Vilanterol19suppressed
Enalapril MaleateEnalapril Maleate19suppressed
GlyxambiEmpagliflozin/Linagliptin19suppressed
Klor-Con M20Potassium Chloride19suppressed
SucralfateSucralfate19suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr18suppressed
BaclofenBaclofen18suppressed
DuleraMometasone/Formoterol18suppressed
IrbesartanIrbesartan18suppressed
Nebivolol HclNebivolol Hcl18suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen18suppressed
Propranolol HclPropranolol Hcl18suppressed
SynthroidLevothyroxine Sodium18suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog17suppressed
ValsartanValsartan17suppressed
Bupropion Hcl SrBupropion Hcl16suppressed
Hydroxyzine HclHydroxyzine Hcl16suppressed
Nifedipine ErNifedipine16suppressed
Tresiba Flextouch U-100Insulin Degludec16suppressed
Humalog Kwikpen U-100Insulin Lispro15suppressed
Ipratropium BromideIpratropium Bromide15suppressed
PaxlovidNirmatrelvir/Ritonavir1515
PrimidonePrimidone15suppressed
ValacyclovirValacyclovir Hcl15suppressed
AmoxicillinAmoxicillin1412
Breztri AerosphereBudesonide/Glycopyr/Formoterol14suppressed
Divalproex SodiumDivalproex Sodium14suppressed
LovastatinLovastatin14suppressed
NabumetoneNabumetone14suppressed
Sumatriptan SuccinateSumatriptan Succinate14suppressed
BumetanideBumetanide13suppressed
IbuprofenIbuprofen13suppressed
LamotrigineLamotrigine13suppressed
RivastigmineRivastigmine13suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone12suppressed
CefdinirCefdinir1212
DigoxinDigoxin12suppressed
Diovan HctValsartan/Hydrochlorothiazide12suppressed
LubiprostoneLubiprostone12suppressed
PremproEstrogen,con/M-Progest Acet12suppressed
Propranolol Hcl ErPropranolol Hcl12suppressed
TemazepamTemazepam12suppressed
TopiramateTopiramate12suppressed
Betamethasone DipropionateBetamethasone Dipropionate11suppressed
Glipizide ErGlipizide11suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate11suppressed
Novolog FlexpenInsulin Aspart11suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl11suppressed
Quetiapine FumarateQuetiapine Fumarate11suppressed
Qvar RedihalerBeclomethasone Dipropionate11suppressed
SynjardyEmpagliflozin/Metformin Hcl11suppressed
Ventolin HfaAlbuterol Sulfate11suppressed

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 $122.76 · 5 records Lilly USA, LLC JARDIANCE, Ozempic, QULIPTA, Rybelsus, UBRELVY, Wegovy 8
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