Healthcare provider profile · identity verified

Patrick Chen, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · SALINAS, CA · NPI 1598749616

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 Patrick Chen, M.D. received $199.98 in general payments during 2025 across 9 reported records.

PFIZER INC. accounted for 31.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 10 associated products.

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

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 12 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 67 claims for Synthroid 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 38 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 12 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 12 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

$199.98

9 reported records · 6 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
PFIZER INC. Unresolved — no canonical attribution shown $61.9631.0%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $34.7217.4%12025
ViiV Healthcare Company Unresolved — no canonical attribution shown $34.5917.3%22025
Amgen Inc. Unresolved — no canonical attribution shown $29.9415.0%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $20.9110.5%12025
ABBVIE INC. Unresolved — no canonical attribution shown $17.868.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$199.989

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
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $61.96 2 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $34.72 1 2025
Source payment records
APRETUDE
Normalized: apretude
Drug ViiV Healthcare Company $34.59 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $29.94 2 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $29.94 2 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $25.48 1 2025
Source payment records
PENBRAYA
Normalized: penbraya
Biological PFIZER INC. $25.48 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $20.91 1 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $17.86 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $17.86 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
Ozempic
ozempic
2025 Ozempic 2024 38
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
12 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
67 17
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
38 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
12 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
12 12

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 Calcium526154
LisinoprilLisinopril309104
Amlodipine BesylateAmlodipine Besylate30584
Levothyroxine SodiumLevothyroxine Sodium29586
Metformin HclMetformin Hcl21167
Metoprolol SuccinateMetoprolol Succinate19152
SimvastatinSimvastatin18456
Rosuvastatin CalciumRosuvastatin Calcium16955
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide14133
OmeprazoleOmeprazole13643
Losartan PotassiumLosartan Potassium12840
Pantoprazole SodiumPantoprazole Sodium12735
GabapentinGabapentin11830
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide11132
Fluticasone PropionateFluticasone Propionate10839
Zolpidem TartrateZolpidem Tartrate10421
Tamsulosin HclTamsulosin Hcl9137
AlprazolamAlprazolam7929
HydrochlorothiazideHydrochlorothiazide7925
Trazodone HclTrazodone Hcl7314
SynthroidLevothyroxine Sodium6717
GlimepirideGlimepiride5818
Escitalopram OxalateEscitalopram Oxalate5519
Albuterol Sulfate HfaAlbuterol Sulfate5313
AllopurinolAllopurinol4814
Tramadol HclTramadol Hcl46suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide4415
FinasterideFinasteride4012
Montelukast SodiumMontelukast Sodium3913
Azelastine HclAzelastine Hcl38suppressed
CarvedilolCarvedilol3813
OzempicSemaglutide38suppressed
Duloxetine HclDuloxetine Hcl37suppressed
AtenololAtenolol3611
Olmesartan MedoxomilOlmesartan Medoxomil34suppressed
Nebivolol HclNebivolol Hcl33suppressed
Clonidine HclClonidine Hcl30suppressed
FurosemideFurosemide30suppressed
MounjaroTirzepatide30suppressed
CelecoxibCelecoxib29suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid29suppressed
AzithromycinAzithromycin2827
Metformin Hcl ErMetformin Hcl28suppressed
SpironolactoneSpironolactone28suppressed
ClopidogrelClopidogrel Bisulfate27suppressed
NaproxenNaproxen27suppressed
Pravastatin SodiumPravastatin Sodium27suppressed
JardianceEmpagliflozin2611
Metoprolol TartrateMetoprolol Tartrate26suppressed
Diclofenac SodiumDiclofenac Sodium25suppressed
MeloxicamMeloxicam2512
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2520
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril24suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen2411
Sertraline HclSertraline Hcl24suppressed
ValsartanValsartan24suppressed
JanuviaSitagliptin Phosphate23suppressed
Buspirone HclBuspirone Hcl20suppressed
Citalopram HbrCitalopram Hydrobromide20suppressed
DiazepamDiazepam20suppressed
TrulicityDulaglutide20suppressed
Fluoxetine HclFluoxetine Hcl19suppressed
FluconazoleFluconazole18suppressed
SymbicortBudesonide/Formoterol Fumarate18suppressed
Benazepril HclBenazepril Hcl17suppressed
TemazepamTemazepam17suppressed
Tizanidine HclTizanidine Hcl17suppressed
ValacyclovirValacyclovir Hcl17suppressed
Acetaminophen-CodeineAcetaminophen With Codeine16suppressed
Breo ElliptaFluticasone/Vilanterol16suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl1611
EzetimibeEzetimibe16suppressed
LorazepamLorazepam16suppressed
Oxybutynin ChlorideOxybutynin Chloride16suppressed
Amitriptyline HclAmitriptyline Hcl15suppressed
AmoxicillinAmoxicillin1515
Ventolin HfaAlbuterol Sulfate15suppressed
ChlorthalidoneChlorthalidone14suppressed
Paroxetine HclParoxetine Hcl14suppressed
Bupropion Hcl SrBupropion Hcl13suppressed
Incruse ElliptaUmeclidinium Bromide13suppressed
Pioglitazone HclPioglitazone Hcl13suppressed
VeltassaPatiromer Calcium Sorbitex13suppressed
AmantadineAmantadine Hcl12suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl12suppressed
EliquisApixaban12suppressed
Hydralazine HclHydralazine Hcl12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
LinzessLinaclotide12suppressed
MethimazoleMethimazole12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
Potassium ChloridePotassium Chloride12suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa11suppressed
Ciprofloxacin HclCiprofloxacin Hcl11suppressed
IrbesartanIrbesartan11suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide11suppressed
Serevent DiskusSalmeterol Xinafoate11suppressed

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 $199.98 · 9 records PFIZER INC. ABRYSVO, APRETUDE, EVENITY, Kerendia, Ozempic, PENBRAYA, PREVNAR 20, PROLIA, QULIPTA, UBRELVY 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