Healthcare provider profile · identity verified

Glenn Robert Gookin, M.D., PH.D.

Family Practice · SACRAMENTO, CA · NPI 1285184929

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 Calcium33767
OmeprazoleOmeprazole16432
LisinoprilLisinopril15432
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13527
GabapentinGabapentin12225
Levothyroxine SodiumLevothyroxine Sodium11825
JardianceEmpagliflozin10214
Metformin Hcl ErMetformin Hcl101suppressed
Tamsulosin HclTamsulosin Hcl9715
Amlodipine BesylateAmlodipine Besylate9420
Losartan PotassiumLosartan Potassium9018
PregabalinPregabalin9011
Pantoprazole SodiumPantoprazole Sodium8817
Albuterol Sulfate HfaAlbuterol Sulfate8323
Metformin HclMetformin Hcl7413
HydrochlorothiazideHydrochlorothiazide6915
Fluticasone PropionateFluticasone Propionate6821
Montelukast SodiumMontelukast Sodium68suppressed
EliquisApixaban5813
Trazodone HclTrazodone Hcl5715
ValsartanValsartan57suppressed
FurosemideFurosemide5613
Potassium ChloridePotassium Chloride54suppressed
Escitalopram OxalateEscitalopram Oxalate51suppressed
Buprenorphine HclBuprenorphine Hcl4811
Metoprolol TartrateMetoprolol Tartrate48suppressed
Duloxetine HclDuloxetine Hcl46suppressed
TrulicityDulaglutide46suppressed
Metoprolol SuccinateMetoprolol Succinate4411
Tramadol HclTramadol Hcl44suppressed
Zolpidem TartrateZolpidem Tartrate42suppressed
MirtazapineMirtazapine41suppressed
ClopidogrelClopidogrel Bisulfate39suppressed
SpironolactoneSpironolactone37suppressed
IbuprofenIbuprofen3616
Cyclobenzaprine HclCyclobenzaprine Hcl34suppressed
LorazepamLorazepam33suppressed
CarvedilolCarvedilol32suppressed
JanuviaSitagliptin Phosphate32suppressed
SymbicortBudesonide/Formoterol Fumarate3213
Ventolin HfaAlbuterol Sulfate3214
BaclofenBaclofen31suppressed
Ondansetron OdtOndansetron31suppressed
AllopurinolAllopurinol29suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate28suppressed
OzempicSemaglutide28suppressed
Humalog Kwikpen U-100Insulin Lispro27suppressed
Fluoxetine HclFluoxetine Hcl26suppressed
Oxybutynin Chloride ErOxybutynin Chloride26suppressed
BelsomraSuvorexant24suppressed
PrednisonePrednisone24suppressed
Sertraline HclSertraline Hcl24suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2418
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic24suppressed
Citalopram HbrCitalopram Hydrobromide23suppressed
Diclofenac SodiumDiclofenac Sodium23suppressed
Oxycodone HclOxycodone Hcl23suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl23suppressed
Meclizine HclMeclizine Hcl22suppressed
Tizanidine HclTizanidine Hcl22suppressed
Breo ElliptaFluticasone/Vilanterol21suppressed
MounjaroTirzepatide20suppressed
Spiriva HandihalerTiotropium Bromide20suppressed
Alendronate SodiumAlendronate Sodium19suppressed
Buspirone HclBuspirone Hcl19suppressed
Benazepril HclBenazepril Hcl18suppressed
Quetiapine FumarateQuetiapine Fumarate18suppressed
TradjentaLinagliptin18suppressed
ClonazepamClonazepam17suppressed
MeloxicamMeloxicam17suppressed
Hydroxyzine HclHydroxyzine Hcl16suppressed
Incruse ElliptaUmeclidinium Bromide16suppressed
PrimidonePrimidone16suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate15suppressed
EstradiolEstradiol15suppressed
FinasterideFinasteride15suppressed
KetoconazoleKetoconazole15suppressed
SimvastatinSimvastatin15suppressed
FamotidineFamotidine14suppressed
MethocarbamolMethocarbamol14suppressed
Morphine Sulfate ErMorphine Sulfate14suppressed
Rosuvastatin CalciumRosuvastatin Calcium14suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter14suppressed
XareltoRivaroxaban14suppressed
AlprazolamAlprazolam13suppressed
Donepezil HclDonepezil Hcl13suppressed
Ipratropium BromideIpratropium Bromide13suppressed
Methenamine HippurateMethenamine Hippurate13suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol12suppressed
Clonidine HclClonidine Hcl12suppressed
Hydralazine HclHydralazine Hcl12suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
Testosterone CypionateTestosterone Cypionate12suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog12suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog11suppressed
ColchicineColchicine11suppressed
LidocaineLidocaine11suppressed
Methadone HclMethadone Hcl11suppressed
NaproxenNaproxen11suppressed
Oxybutynin ChlorideOxybutynin Chloride11suppressed
Prochlorperazine MaleateProchlorperazine Maleate11suppressed
Ropinirole HclRopinirole Hcl11suppressed
SotalolSotalol Hcl11suppressed

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