Healthcare provider profile · identity verified

Dan D Hopner, MD

Allopathic & Osteopathic Physicians|Family Medicine · SAN JOSE, CA · NPI 1104836402

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 Dan D Hopner, MD received $21.47 in general payments during 2025 across 1 reported records.

PFIZER INC. accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

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

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 73 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 19 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

$21.47

1 reported records · 1 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 $21.47100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$21.471

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
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $21.47 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $21.47 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
PAXLOVID
paxlovid
2025 Paxlovid 2024 19 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
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
73 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
19 19

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 Calcium438118
Levothyroxine SodiumLevothyroxine Sodium23962
Amlodipine BesylateAmlodipine Besylate22862
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen22129
Metformin HclMetformin Hcl17641
Tamsulosin HclTamsulosin Hcl14329
LorazepamLorazepam12924
Losartan PotassiumLosartan Potassium12629
GabapentinGabapentin11827
LisinoprilLisinopril11537
Zolpidem TartrateZolpidem Tartrate11323
SimvastatinSimvastatin10324
Pantoprazole SodiumPantoprazole Sodium9926
Metoprolol SuccinateMetoprolol Succinate9224
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid8723
DiazepamDiazepam8511
AlprazolamAlprazolam8212
OmeprazoleOmeprazole7618
AllopurinolAllopurinol7323
EliquisApixaban7314
HydrochlorothiazideHydrochlorothiazide7118
AtenololAtenolol6917
Sertraline HclSertraline Hcl6814
Potassium ChloridePotassium Chloride6015
FurosemideFurosemide5719
Morphine Sulfate ErMorphine Sulfate52suppressed
Metoprolol TartrateMetoprolol Tartrate4913
Oxycodone HclOxycodone Hcl49suppressed
Bupropion XlBupropion Hcl48suppressed
EszopicloneEszopiclone4813
Trazodone HclTrazodone Hcl4811
EzetimibeEzetimibe47suppressed
Albuterol Sulfate HfaAlbuterol Sulfate4614
MeloxicamMeloxicam4511
Rosuvastatin CalciumRosuvastatin Calcium4012
GlipizideGlipizide3812
Breo ElliptaFluticasone/Vilanterol36suppressed
BaclofenBaclofen35suppressed
LevofloxacinLevofloxacin3524
XareltoRivaroxaban35suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl34suppressed
JanuviaSitagliptin Phosphate34suppressed
MethylprednisoloneMethylprednisolone3324
Montelukast SodiumMontelukast Sodium33suppressed
AzithromycinAzithromycin3223
Venlafaxine Hcl ErVenlafaxine Hcl32suppressed
Duloxetine HclDuloxetine Hcl31suppressed
Escitalopram OxalateEscitalopram Oxalate31suppressed
ClopidogrelClopidogrel Bisulfate30suppressed
Metformin Hcl ErMetformin Hcl30suppressed
Bupropion Hcl SrBupropion Hcl29suppressed
CelecoxibCelecoxib28suppressed
Quetiapine FumarateQuetiapine Fumarate28suppressed
TrulicityDulaglutide28suppressed
ValsartanValsartan28suppressed
GlyburideGlyburide27suppressed
Citalopram HbrCitalopram Hydrobromide25suppressed
ClonazepamClonazepam25suppressed
Glipizide ErGlipizide25suppressed
IbuprofenIbuprofen25suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen25suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav24suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide24suppressed
OzempicSemaglutide24suppressed
Pravastatin SodiumPravastatin Sodium23suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine21suppressed
SpironolactoneSpironolactone21suppressed
TestosteroneTestosterone21suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine20suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
MirtazapineMirtazapine20suppressed
PregabalinPregabalin20suppressed
Ibandronate SodiumIbandronate Sodium19suppressed
PaxlovidNirmatrelvir/Ritonavir1919
CarisoprodolCarisoprodol18suppressed
CarvedilolCarvedilol18suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl18suppressed
FinasterideFinasteride18suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride18suppressed
AcyclovirAcyclovir17suppressed
Amiodarone HclAmiodarone Hcl17suppressed
FamotidineFamotidine17suppressed
Ropinirole HclRopinirole Hcl17suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter17suppressed
ClarithromycinClarithromycin1614
Diclofenac SodiumDiclofenac Sodium16suppressed
FenofibrateFenofibrate Nanocrystallized16suppressed
LatanoprostLatanoprost16suppressed
Sumatriptan SuccinateSumatriptan Succinate16suppressed
TopiramateTopiramate16suppressed
Alendronate SodiumAlendronate Sodium15suppressed
Donepezil HclDonepezil Hcl15suppressed
Doxazosin MesylateDoxazosin Mesylate15suppressed
TemazepamTemazepam15suppressed
AmoxicillinAmoxicillin1412
CefuroximeCefuroxime Axetil14suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium14suppressed
Fluoxetine HclFluoxetine Hcl14suppressed
Incruse ElliptaUmeclidinium Bromide14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
Acetaminophen-CodeineAcetaminophen With Codeine13suppressed
FentanylFentanyl13suppressed
Propranolol HclPropranolol Hcl13suppressed
RisperidoneRisperidone13suppressed
LubiprostoneLubiprostone12suppressed
NucyntaTapentadol Hcl12suppressed
Tizanidine HclTizanidine Hcl12suppressed
TrintellixVortioxetine Hydrobromide12suppressed
AnastrozoleAnastrozole11suppressed
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl11suppressed
Doxycycline HyclateDoxycycline Hyclate11suppressed
Enoxaparin SodiumEnoxaparin Sodium11suppressed
Morphine SulfateMorphine Sulfate11suppressed
MupirocinMupirocin11suppressed
Oxybutynin ChlorideOxybutynin Chloride11suppressed
OxycontinOxycodone Hcl11suppressed
SumatriptanSumatriptan11suppressed
Warfarin SodiumWarfarin Sodium11suppressed

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 $21.47 · 1 records PFIZER INC. NURTEC ODT, PAXLOVID 2
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