Healthcare provider profile · identity verified

Patrick R Flynn, M.D.

Family Practice · PETALUMA, CA · NPI 1770567745

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium440148
Losartan PotassiumLosartan Potassium334111
LisinoprilLisinopril323108
Levothyroxine SodiumLevothyroxine Sodium308101
Amlodipine BesylateAmlodipine Besylate21775
HydrochlorothiazideHydrochlorothiazide19262
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen17738
Rosuvastatin CalciumRosuvastatin Calcium15052
GabapentinGabapentin14150
Pantoprazole SodiumPantoprazole Sodium13643
Metoprolol SuccinateMetoprolol Succinate12336
Tamsulosin HclTamsulosin Hcl12345
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide11938
LorazepamLorazepam11837
OmeprazoleOmeprazole11643
Albuterol Sulfate HfaAlbuterol Sulfate10651
Fluticasone PropionateFluticasone Propionate10338
AtenololAtenolol10032
Metformin Hcl ErMetformin Hcl9435
Trazodone HclTrazodone Hcl9233
Oxycodone HclOxycodone Hcl9121
AcyclovirAcyclovir9033
AllopurinolAllopurinol8227
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen7812
Tramadol HclTramadol Hcl7715
Alendronate SodiumAlendronate Sodium7629
Metoprolol TartrateMetoprolol Tartrate7123
FamotidineFamotidine6725
SimvastatinSimvastatin6721
PradaxaDabigatran Etexilate Mesylate6527
Sertraline HclSertraline Hcl6416
Wixela InhubFluticasone Propion/Salmeterol6318
BreynaBudesonide/Formoterol Fumarate6217
Spiriva RespimatTiotropium Bromide5917
Escitalopram OxalateEscitalopram Oxalate5418
PrednisonePrednisone5438
Pravastatin SodiumPravastatin Sodium4814
Terazosin HclTerazosin Hcl4815
IbuprofenIbuprofen4522
Doxycycline MonohydrateDoxycycline Monohydrate4225
Montelukast SodiumMontelukast Sodium4112
Acetaminophen-CodeineAcetaminophen With Codeine3920
AmoxicillinAmoxicillin3727
AlvescoCiclesonide3614
OzempicSemaglutide36suppressed
Citalopram HbrCitalopram Hydrobromide3512
Potassium ChloridePotassium Chloride35suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim3528
AzithromycinAzithromycin3332
FurosemideFurosemide33suppressed
Bupropion Hcl SrBupropion Hcl32suppressed
Ondansetron HclOndansetron Hcl3213
ChlorthalidoneChlorthalidone30suppressed
MupirocinMupirocin3018
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf2929
Hydroxyzine HclHydroxyzine Hcl29suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2826
Bisoprolol FumarateBisoprolol Fumarate2811
Diltiazem 24hr Er (Cd)Diltiazem Hcl28suppressed
Fluoxetine HclFluoxetine Hcl28suppressed
ColchicineColchicine2716
MirtazapineMirtazapine2711
Ropinirole HclRopinirole Hcl27suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl26suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide2612
ClopidogrelClopidogrel Bisulfate25suppressed
Metformin HclMetformin Hcl25suppressed
MethocarbamolMethocarbamol2512
Bupropion XlBupropion Hcl24suppressed
MeloxicamMeloxicam2412
Tizanidine HclTizanidine Hcl24suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2412
FinasterideFinasteride23suppressed
GlimepirideGlimepiride23suppressed
Venlafaxine Hcl ErVenlafaxine Hcl23suppressed
Zolpidem TartrateZolpidem Tartrate23suppressed
CarvedilolCarvedilol22suppressed
CefadroxilCefadroxil2220
ClonazepamClonazepam22suppressed
HydrocortisoneHydrocortisone2211
BaclofenBaclofen21suppressed
MetronidazoleMetronidazole2117
CephalexinCephalexin2020
Duloxetine HclDuloxetine Hcl20suppressed
Ipratropium BromideIpratropium Bromide20suppressed
NystatinNystatin1813
Propranolol HclPropranolol Hcl18suppressed
Sumatriptan SuccinateSumatriptan Succinate18suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
FluconazoleFluconazole1715
Buspirone HclBuspirone Hcl16suppressed
GlipizideGlipizide16suppressed
NaproxenNaproxen16suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1615
Terbinafine HclTerbinafine Hcl1611
NitroglycerinNitroglycerin1511
Verapamil ErVerapamil Hcl15suppressed
DigoxinDigoxin14suppressed
FluocinonideFluocinonide14suppressed
JardianceEmpagliflozin14suppressed
Donepezil HclDonepezil Hcl13suppressed
EpinephrineEpinephrine13suppressed
Liothyronine SodiumLiothyronine Sodium13suppressed
LovastatinLovastatin13suppressed
Ciprofloxacin HclCiprofloxacin Hcl12suppressed
Clobetasol PropionateClobetasol Propionate12suppressed
Labetalol HclLabetalol Hcl12suppressed
Trospium ChlorideTrospium Chloride12suppressed
DesonideDesonide11suppressed
EliquisApixaban11suppressed
SpironolactoneSpironolactone11suppressed
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml11suppressed

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
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