Healthcare provider profile · identity verified

Gary John Coomber, MD

Family Practice · SANTA ROSA, CA · NPI 1275558967

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
Levothyroxine SodiumLevothyroxine Sodium21563
GabapentinGabapentin17133
LisinoprilLisinopril16747
Atorvastatin CalciumAtorvastatin Calcium16251
Losartan PotassiumLosartan Potassium15542
Amlodipine BesylateAmlodipine Besylate11734
SimvastatinSimvastatin11431
HydrochlorothiazideHydrochlorothiazide11137
Metformin Hcl ErMetformin Hcl10631
Oxycodone HclOxycodone Hcl10315
Albuterol Sulfate HfaAlbuterol Sulfate10031
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen10017
Tamsulosin HclTamsulosin Hcl9833
OmeprazoleOmeprazole7924
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen68suppressed
Pantoprazole SodiumPantoprazole Sodium6718
Metoprolol SuccinateMetoprolol Succinate6523
FinasterideFinasteride6016
CarvedilolCarvedilol5912
FurosemideFurosemide5926
Trazodone HclTrazodone Hcl5915
Tramadol HclTramadol Hcl5512
Rosuvastatin CalciumRosuvastatin Calcium4817
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4614
Potassium ChloridePotassium Chloride4413
Hydroxyzine HclHydroxyzine Hcl4315
LovastatinLovastatin4314
Montelukast SodiumMontelukast Sodium4313
AllopurinolAllopurinol4214
Fluticasone PropionateFluticasone Propionate4213
GlimepirideGlimepiride41suppressed
Sertraline HclSertraline Hcl4113
IbuprofenIbuprofen3912
AtenololAtenolol3811
Metformin HclMetformin Hcl3814
Triamcinolone AcetonideTriamcinolone Acetonide3716
AlprazolamAlprazolam36suppressed
Quetiapine FumarateQuetiapine Fumarate36suppressed
Venlafaxine Hcl ErVenlafaxine Hcl36suppressed
Metoprolol TartrateMetoprolol Tartrate3413
XareltoRivaroxaban34suppressed
Duloxetine HclDuloxetine Hcl3311
MirtazapineMirtazapine30suppressed
Warfarin SodiumWarfarin Sodium30suppressed
FamotidineFamotidine2911
Buspirone HclBuspirone Hcl28suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog27suppressed
BaclofenBaclofen26suppressed
Diclofenac SodiumDiclofenac Sodium26suppressed
Donepezil HclDonepezil Hcl26suppressed
EliquisApixaban26suppressed
Pioglitazone HclPioglitazone Hcl26suppressed
Terazosin HclTerazosin Hcl26suppressed
Zolpidem TartrateZolpidem Tartrate26suppressed
Doxazosin MesylateDoxazosin Mesylate24suppressed
Meclizine HclMeclizine Hcl24suppressed
ClopidogrelClopidogrel Bisulfate23suppressed
Insulin Aspart FlexpenInsulin Aspart23suppressed
NystatinNystatin23suppressed
Olmesartan MedoxomilOlmesartan Medoxomil23suppressed
OzempicSemaglutide23suppressed
BumetanideBumetanide22suppressed
Sumatriptan SuccinateSumatriptan Succinate22suppressed
Alendronate SodiumAlendronate Sodium21suppressed
Hydroxyzine PamoateHydroxyzine Pamoate21suppressed
Oxybutynin ChlorideOxybutynin Chloride21suppressed
Ropinirole HclRopinirole Hcl21suppressed
DiazepamDiazepam20suppressed
EstradiolEstradiol20suppressed
Fluoxetine HclFluoxetine Hcl20suppressed
Ondansetron OdtOndansetron18suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1811
MeloxicamMeloxicam17suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl17suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic17suppressed
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl16suppressed
Citalopram HbrCitalopram Hydrobromide16suppressed
PrednisonePrednisone16suppressed
Bupropion Hcl SrBupropion Hcl15suppressed
FenofibrateFenofibrate15suppressed
LoperamideLoperamide Hcl15suppressed
Naloxone HclNaloxone Hcl1514
TopiramateTopiramate15suppressed
LorazepamLorazepam14suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide14suppressed
CalcitriolCalcitriol13suppressed
Humalog Kwikpen U-100Insulin Lispro13suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn13suppressed
Levemir FlexpenInsulin Detemir13suppressed
SymbicortBudesonide/Formoterol Fumarate13suppressed
TrulicityDulaglutide13suppressed
Benazepril HclBenazepril Hcl12suppressed
Bupropion XlBupropion Hcl12suppressed
Fluticasone Propionate HfaFluticasone Propionate12suppressed
NitroglycerinNitroglycerin12suppressed
OtezlaApremilast12suppressed
PregabalinPregabalin12suppressed
SynthroidLevothyroxine Sodium12suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid12suppressed
LevetiracetamLevetiracetam11suppressed
SpironolactoneSpironolactone11suppressed

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