Healthcare provider profile · identity verified

Olin P Callaghan, PA

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · DELMAR, NY · NPI 1902891930

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 Olin P Callaghan, PA received $2,689.67 in general payments during 2025 across 138 reported records.

AstraZeneca Pharmaceuticals LP accounted for 17.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 37 associated products.

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

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 13 claims for Synthroid by this doctor in 2024.

E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 47 claims for Eliquis by this doctor in 2024.

GlaxoSmithKline, 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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Trelegy Ellipta 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 16 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 22 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 58 claims for Ozempic by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 47 claims for Eliquis by this doctor in 2024.

PFIZER 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 PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Paxlovid by this doctor in 2024.

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

Payment overview · 2025

General Payments

$2,689.67

138 reported records · 23 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
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $480.8117.9%102025
ABBVIE INC. Unresolved — no canonical attribution shown $391.7614.6%222025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $308.9411.5%252025
PFIZER INC. Unresolved — no canonical attribution shown $233.188.7%222025
Novo Nordisk Inc Unresolved — no canonical attribution shown $233.048.7%122025
Lilly USA, LLC Unresolved — no canonical attribution shown $215.448.0%112025
Exact Sciences Corporation Unresolved — no canonical attribution shown $142.965.3%72025
SANOFI-AVENTIS U.S. LLC Unresolved — no canonical attribution shown $113.484.2%42025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $113.034.2%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $72.752.7%32025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $54.432.0%22025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $43.551.6%22025
ARS Pharmaceuticals Operations, Inc. Unresolved — no canonical attribution shown $38.081.4%22025
Abbott Laboratories Unresolved — no canonical attribution shown $37.821.4%22025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $37.671.4%22025
Verona Pharma, Inc. Unresolved — no canonical attribution shown $35.471.3%22025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $32.791.2%22025
Amgen Inc. Unresolved — no canonical attribution shown $31.601.2%22025
Lundbeck LLC Unresolved — no canonical attribution shown $20.600.8%12025
SANOFI PASTEUR INC. Unresolved — no canonical attribution shown $17.500.7%12025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $15.430.6%12025
Dexcom, Inc. Unresolved — no canonical attribution shown $14.810.6%12025
Organon LLC Unresolved — no canonical attribution shown $4.530.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,689.67138

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
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $329.95 7 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $258.81 3 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $240.06 14 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $240.06 14 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $233.18 22 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $164.39 11 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $152.39 15 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $145.83 7 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $145.83 7 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $144.59 10 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $144.55 14 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $141.69 2 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug E.R. Squibb & Sons, L.L.C., PFIZER INC. $135.22 9 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $129.90 7 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $124.78 6 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $124.01 6 2025
Source payment records
TZIELD
Normalized: tzield
Biological SANOFI-AVENTIS U.S. LLC $113.48 4 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $113.03 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $88.61 4 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $72.75 3 2025
Source payment records
  • 2025-10-07 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $22.91 · Open Payments source
  • 2025-10-28 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.88 · Open Payments source
  • 2025-12-21 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.96 · Open Payments source
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $54.35 3 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $43.55 2 2025
Source payment records
KISUNLA
Normalized: kisunla
Drug Lilly USA, LLC $39.11 2 2025
Source payment records
NEFFY
Normalized: neffy
Drug ARS Pharmaceuticals Operations, Inc. $38.08 2 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $37.82 2 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $37.67 2 2025
Source payment records
Ohtuvayre
Normalized: ohtuvayre
Drug Verona Pharma, Inc. $35.47 2 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $32.79 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $31.60 2 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Lilly USA, LLC $30.59 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $23.76 1 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $21.80 1 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $20.60 1 2025
Source payment records
FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE
Normalized: flublok quadrivalent northern hemisphere
Biological SANOFI PASTEUR INC. $17.50 1 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $14.81 1 2025
Source payment records
BEXSERO
Normalized: bexsero
Biological GlaxoSmithKline, LLC. $12.18 1 2025
Source payment records
NEXPLANON
Normalized: nexplanon
Drug Organon LLC $4.53 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
ELIQUIS
eliquis
2025 Eliquis 2024 47 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 58 exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 25
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 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
13 suppressed by CMS
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
47 14
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
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
16 suppressed by CMS
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
22 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
58 16
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
47 14
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
17 17

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
PrednisonePrednisone190124
OmeprazoleOmeprazole18156
Atorvastatin CalciumAtorvastatin Calcium16070
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav159100
AlprazolamAlprazolam15739
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen15519
Albuterol Sulfate HfaAlbuterol Sulfate11837
GabapentinGabapentin11235
LisinoprilLisinopril10839
Amlodipine BesylateAmlodipine Besylate10541
Levothyroxine SodiumLevothyroxine Sodium10542
Doxycycline HyclateDoxycycline Hyclate9973
Metformin HclMetformin Hcl7729
Tamsulosin HclTamsulosin Hcl7422
Fluticasone PropionateFluticasone Propionate7148
Metoprolol SuccinateMetoprolol Succinate6824
Losartan PotassiumLosartan Potassium6125
Ondansetron OdtOndansetron6127
Cyclobenzaprine HclCyclobenzaprine Hcl6022
OzempicSemaglutide5816
DiazepamDiazepam5711
Triamcinolone AcetonideTriamcinolone Acetonide5733
IbuprofenIbuprofen5616
FurosemideFurosemide5521
AzithromycinAzithromycin5343
Metformin Hcl ErMetformin Hcl5015
ClonazepamClonazepam4914
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst4926
EliquisApixaban4714
HydrochlorothiazideHydrochlorothiazide4719
FamotidineFamotidine4621
Pravastatin SodiumPravastatin Sodium4616
Fluoxetine HclFluoxetine Hcl45suppressed
Metoprolol TartrateMetoprolol Tartrate4416
Zolpidem TartrateZolpidem Tartrate41suppressed
Hydroxyzine HclHydroxyzine Hcl39suppressed
Oxycodone HclOxycodone Hcl3912
Rosuvastatin CalciumRosuvastatin Calcium3916
AllopurinolAllopurinol3611
Escitalopram OxalateEscitalopram Oxalate3617
Trazodone HclTrazodone Hcl3417
LoperamideLoperamide Hcl3322
PregabalinPregabalin33suppressed
Quetiapine FumarateQuetiapine Fumarate32suppressed
FluconazoleFluconazole3017
Sertraline HclSertraline Hcl2914
ValacyclovirValacyclovir Hcl2914
Lagevrio (Eua)Molnupiravir2827
Clonidine HclClonidine Hcl2711
Duloxetine HclDuloxetine Hcl2712
KetoconazoleKetoconazole2616
AmoxicillinAmoxicillin2515
Trelegy ElliptaFluticasone/Umeclidin/Vilanter25suppressed
LevetiracetamLevetiracetam24suppressed
SimvastatinSimvastatin24suppressed
Citalopram HbrCitalopram Hydrobromide23suppressed
IrbesartanIrbesartan23suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog23suppressed
Sumatriptan SuccinateSumatriptan Succinate22suppressed
TrulicityDulaglutide22suppressed
Montelukast SodiumMontelukast Sodium21suppressed
Pantoprazole SodiumPantoprazole Sodium21suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide19suppressed
Venlafaxine Hcl ErVenlafaxine Hcl19suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr17suppressed
PaxlovidNirmatrelvir/Ritonavir1717
Bupropion XlBupropion Hcl16suppressed
Diclofenac SodiumDiclofenac Sodium16suppressed
MounjaroTirzepatide16suppressed
Nifedipine ErNifedipine16suppressed
TopiramateTopiramate16suppressed
HydrocortisoneHydrocortisone15suppressed
InvokanaCanagliflozin15suppressed
Ondansetron HclOndansetron Hcl15suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim15suppressed
Tizanidine HclTizanidine Hcl15suppressed
Ergotamine-CaffeineErgotamine Tartrate/Caffeine14suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen14suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate13suppressed
CarvedilolCarvedilol13suppressed
Ciprofloxacin HclCiprofloxacin Hcl13suppressed
ColchicineColchicine13suppressed
SynthroidLevothyroxine Sodium13suppressed
Tramadol HclTramadol Hcl13suppressed
BumetanideBumetanide12suppressed
LamotrigineLamotrigine12suppressed
NaproxenNaproxen12suppressed
TadalafilTadalafil12suppressed
TrintellixVortioxetine Hydrobromide12suppressed
Buspirone HclBuspirone Hcl11suppressed
Bydureon BciseExenatide Microspheres11suppressed
NitrofurantoinNitrofurantoin Macrocrystal11suppressed
TestosteroneTestosterone11suppressed

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 $2,689.67 · 138 records AstraZeneca Pharmaceuticals LP AIRSUPRA, AREXVY, BEXSERO, BREZTRI, CAPLYTA, Cologuard Collection Kit, Dexcom G6 Transmitter, ELIQUIS, EVENITY, FARXIGA, FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE, FREESTYLE LIBRE 3, GEMTESA, JARDIANCE, KISUNLA, LINZESS, MOUNJARO, NEFFY, NEXPLANON, NURTEC ODT, Ohtuvayre, Ozempic, QULIPTA, REXULTI, Rybelsus, SHINGRIX, TRELEGY ELLIPTA, TZIELD, The Cologuard Plus Collection Kit, UBRELVY, VOQUEZNA, VRAYLAR, Veozah, Wegovy, XIFAXAN, ZAVZPRET, ZEPBOUND 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