Healthcare provider profile · identity verified

Adrian Omar Chen, MD

Allopathic & Osteopathic Physicians|Pediatrics · RICHMOND, MO · NPI 1790952869

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 Adrian Omar Chen, MD received $1,528.79 in general payments during 2025 across 89 reported records.

AstraZeneca Pharmaceuticals LP accounted for 14.8% 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, Farxiga, Nurtec Odt, Ozempic, Paxlovid.

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 36 claims for Farxiga 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 SYMBICORT as an associated drug or biological on 71 records involving 51 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Symbicort 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 17 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 44 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 94 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 NURTEC ODT as an associated drug or biological on 217574 records involving 54025 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Nurtec Odt 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 15 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

$1,528.79

89 reported records · 22 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 $226.2714.8%132025
Lilly USA, LLC Unresolved — no canonical attribution shown $167.1310.9%92025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $164.3010.8%122025
Abbott Laboratories Unresolved — no canonical attribution shown $148.709.7%72025
ABBVIE INC. Unresolved — no canonical attribution shown $136.979.0%142025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $121.638.0%52025
Dexcom, Inc. Unresolved — no canonical attribution shown $98.306.4%42025
PFIZER INC. Unresolved — no canonical attribution shown $66.914.4%42025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $65.974.3%32025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $51.303.4%32025
Baxter Healthcare Unresolved — no canonical attribution shown $42.462.8%22025
VERTEX PHARMACEUTICALS INCORPORATED Unresolved — no canonical attribution shown $37.962.5%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $37.502.5%22025
Tactile Systems Technology Inc Unresolved — no canonical attribution shown $23.941.6%12025
Hologic Sales and Service, LLC Unresolved — no canonical attribution shown $23.361.5%12025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $22.031.4%12025
Amgen Inc. Unresolved — no canonical attribution shown $19.991.3%12025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $16.271.1%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $15.961.0%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $14.691.0%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.060.9%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $13.090.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,528.7989

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
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $164.30 12 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $148.70 7 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $123.44 11 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $121.63 5 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $117.81 6 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $98.30 4 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $96.88 5 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $96.79 5 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $84.40 5 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $65.97 3 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $55.65 3 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $51.30 3 2025
Source payment records
HETLIOZ
Normalized: hetlioz
Drug Vanda Pharmaceuticals Inc. $45.87 2 2025
Source payment records
Hillrom - Vest System Model 205 Acute Care
Normalized: hillrom vest system model 205 acute care
Device Baxter Healthcare $42.46 2 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $38.43 2 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $38.43 2 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $38.43 2 2025
Source payment records
JOURNAVX
Normalized: journavx
Drug VERTEX PHARMACEUTICALS INCORPORATED $37.96 2 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $37.50 2 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $32.75 2 2025
Source payment records
Flexitouch Plus
Normalized: flexitouch plus
Device Tactile Systems Technology Inc $23.94 1 2025
Source payment records
Nimbl
Normalized: nimbl
Device Tactile Systems Technology Inc $23.94 1 2025
Source payment records
APTIMA
Normalized: aptima
Device Hologic Sales and Service, LLC $23.36 1 2025
Source payment records
THINPREP 2000 PROCESSOR
Normalized: thinprep 2000 processor
Device Hologic Sales and Service, LLC $23.36 1 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $22.03 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $19.99 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $19.99 1 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $16.27 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $15.96 1 2025
Source payment records
  • 2025-08-04 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.96 · Open Payments source
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $14.97 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $14.69 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $14.69 1 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $13.53 3 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $13.53 3 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $13.51 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $13.51 1 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $13.09 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 94 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 36
Beneficiary count suppressed
exact normalized Medicare Part D
NURTEC ODT
nurtec odt
2025 Nurtec Odt 2024 14
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 44
Beneficiary count suppressed
exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 15 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
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
36 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 SYMBICORT
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 51 recipient NPIs · example record 1206132610
Symbicort · 2024
Exact normalized brand match · 1 Part D row
20 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
17 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
44 suppressed by CMS
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
94 18
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 NURTEC ODT
open payments reported associated product
CMS Open Payments — General Payments
217574 supporting records · 54025 recipient NPIs · example record 1228794063
Nurtec Odt · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
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
15 15

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 Calcium13356
Levothyroxine SodiumLevothyroxine Sodium11646
GabapentinGabapentin10929
Pantoprazole SodiumPantoprazole Sodium10534
Albuterol Sulfate HfaAlbuterol Sulfate10338
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen10229
EliquisApixaban9418
Losartan PotassiumLosartan Potassium9328
Amlodipine BesylateAmlodipine Besylate9133
LisinoprilLisinopril7935
Trazodone HclTrazodone Hcl7822
CarvedilolCarvedilol7720
MeloxicamMeloxicam7533
OmeprazoleOmeprazole7232
Tramadol HclTramadol Hcl7127
Metformin HclMetformin Hcl7027
FamotidineFamotidine6921
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen57suppressed
Fluticasone PropionateFluticasone Propionate5424
HydrochlorothiazideHydrochlorothiazide5321
Cyclobenzaprine HclCyclobenzaprine Hcl5221
FurosemideFurosemide5224
MethylprednisoloneMethylprednisolone4745
Tamsulosin HclTamsulosin Hcl4515
OzempicSemaglutide44suppressed
PrednisonePrednisone4434
AlprazolamAlprazolam4212
Metoprolol TartrateMetoprolol Tartrate4213
Duloxetine HclDuloxetine Hcl4114
PregabalinPregabalin41suppressed
ClopidogrelClopidogrel Bisulfate4013
Fluoxetine HclFluoxetine Hcl39suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog39suppressed
Sertraline HclSertraline Hcl3912
LorazepamLorazepam3812
Potassium ChloridePotassium Chloride3816
Quetiapine FumarateQuetiapine Fumarate38suppressed
FarxigaDapagliflozin Propanediol36suppressed
Metoprolol SuccinateMetoprolol Succinate3611
MirtazapineMirtazapine33suppressed
Tizanidine HclTizanidine Hcl3314
AzithromycinAzithromycin3229
Montelukast SodiumMontelukast Sodium3213
Warfarin SodiumWarfarin Sodium32suppressed
Rosuvastatin CalciumRosuvastatin Calcium3114
Alendronate SodiumAlendronate Sodium3013
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2825
Citalopram HbrCitalopram Hydrobromide26suppressed
Escitalopram OxalateEscitalopram Oxalate26suppressed
ClonazepamClonazepam24suppressed
Bupropion XlBupropion Hcl23suppressed
CelecoxibCelecoxib23suppressed
SpironolactoneSpironolactone23suppressed
Pravastatin SodiumPravastatin Sodium22suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl21suppressed
TemazepamTemazepam21suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2011
Novolog FlexpenInsulin Aspart20suppressed
SymbicortBudesonide/Formoterol Fumarate20suppressed
Zolpidem TartrateZolpidem Tartrate20suppressed
Diclofenac SodiumDiclofenac Sodium19suppressed
Donepezil HclDonepezil Hcl19suppressed
FenofibrateFenofibrate Nanocrystallized19suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride19suppressed
GlimepirideGlimepiride18suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide18suppressed
AmoxicillinAmoxicillin1715
Doxycycline HyclateDoxycycline Hyclate1715
EzetimibeEzetimibe17suppressed
Hydroxyzine HclHydroxyzine Hcl17suppressed
NystatinNystatin17suppressed
Paroxetine HclParoxetine Hcl17suppressed
TrulicityDulaglutide17suppressed
Venlafaxine Hcl ErVenlafaxine Hcl17suppressed
AllopurinolAllopurinol16suppressed
Combivent RespimatIpratropium/Albuterol Sulfate16suppressed
Humalog Kwikpen U-100Insulin Lispro16suppressed
JanuviaSitagliptin Phosphate16suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa15suppressed
Memantine HclMemantine Hcl15suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic15suppressed
PaxlovidNirmatrelvir/Ritonavir1515
SimvastatinSimvastatin15suppressed
XareltoRivaroxaban15suppressed
Glipizide ErGlipizide14suppressed
Nurtec OdtRimegepant Sulfate14suppressed
Buspirone HclBuspirone Hcl13suppressed
Ciprofloxacin HclCiprofloxacin Hcl13suppressed
OxcarbazepineOxcarbazepine13suppressed
Oxybutynin ChlorideOxybutynin Chloride13suppressed
Propranolol HclPropranolol Hcl13suppressed
Stiolto RespimatTiotropium Br/Olodaterol Hcl13suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl12suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium12suppressed
Methenamine HippurateMethenamine Hippurate12suppressed
Oxybutynin Chloride ErOxybutynin Chloride12suppressed
EstradiolEstradiol11suppressed

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 $1,528.79 · 89 records AstraZeneca Pharmaceuticals LP ABRYSVO, AIRSUPRA, APTIMA, AUSTEDO XR, BREZTRI, CAPLYTA, COMIRNATY, Dexcom G6 Transmitter, ELIQUIS, FANAPT, FARXIGA, FREESTYLE LIBRE 3, Flexitouch Plus, HETLIOZ, Hillrom - Vest System Model 205 Acute Care, INGREZZA, JARDIANCE, JOURNAVX, LEQVIO, MOUNJARO, NURTEC ODT, Nimbl, OTEZLA, Ozempic, PAXLOVID, PREVNAR 20, QULIPTA, REPATHA, REXULTI, Rybelsus, THINPREP 2000 PROCESSOR, UBRELVY, VOQUEZNA, VRAYLAR, Veozah, XIFAXAN, ZEPBOUND 7
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