Healthcare provider profile · identity verified

Thomas Dean Biddison, M.D.

Allopathic & Osteopathic Physicians|General Practice · LOS ANGELES, CA · NPI 1669402327

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 Thomas Dean Biddison, M.D. received $105.44 in general payments during 2025 across 1 reported records.

Gilead Sciences, Inc. accounted for 100.0% of that reported general-payment amount.

Gilead Sciences, 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 Biktarvy as an associated drug or biological on 8065 records involving 2759 distinct recipient NPIs. Public Medicare Part D data also shows 111 claims for Biktarvy by this doctor in 2024.

Gilead Sciences, 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 Descovy as an associated drug or biological on 2032 records involving 589 distinct recipient NPIs. Public Medicare Part D data also shows 75 claims for Descovy by this doctor in 2024.

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

Payment overview · 2025

General Payments

$105.44

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
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $105.44100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$105.441

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

Payment records were found, but the reported records did not identify a specific associated product for this analysis.

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Biktarvy
open payments reported associated product
CMS Open Payments — General Payments
8065 supporting records · 2759 recipient NPIs · example record 1234350766
Biktarvy · 2024
Exact normalized brand match · 1 Part D row
111 16
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Descovy
open payments reported associated product
CMS Open Payments — General Payments
2032 supporting records · 589 recipient NPIs · example record 1234351196
Descovy · 2024
Exact normalized brand match · 1 Part D row
75 suppressed by CMS

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 Calcium29636
Amlodipine BesylateAmlodipine Besylate14319
LisinoprilLisinopril12418
TestosteroneTestosterone11914
BiktarvyBictegrav/Emtricit/Tenofov Ala11116
JulucaDolutegravir/Rilpivirine10211
GabapentinGabapentin9715
OmeprazoleOmeprazole95suppressed
FamotidineFamotidine9411
TivicayDolutegravir Sodium76suppressed
DescovyEmtricitabine/Tenofov Alafenam75suppressed
Metformin HclMetformin Hcl72suppressed
IbuprofenIbuprofen6813
TrulicityDulaglutide64suppressed
FinasterideFinasteride63suppressed
TriumeqAbacavir/Dolutegravir/Lamivudi63suppressed
NaproxenNaproxen62suppressed
PregabalinPregabalin61suppressed
Pantoprazole SodiumPantoprazole Sodium60suppressed
AcyclovirAcyclovir5814
OdefseyEmtricitab/Rilpiviri/Tenof Ala54suppressed
Rosuvastatin CalciumRosuvastatin Calcium50suppressed
FluconazoleFluconazole49suppressed
LoperamideLoperamide Hcl47suppressed
ValacyclovirValacyclovir Hcl44suppressed
Tamsulosin HclTamsulosin Hcl43suppressed
Losartan PotassiumLosartan Potassium42suppressed
OzempicSemaglutide39suppressed
Zolpidem TartrateZolpidem Tartrate38suppressed
AtenololAtenolol37suppressed
DovatoDolutegravir Sodium/Lamivudine35suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine34suppressed
Albuterol Sulfate HfaAlbuterol Sulfate33suppressed
ChlorthalidoneChlorthalidone33suppressed
Metoprolol TartrateMetoprolol Tartrate31suppressed
MounjaroTirzepatide30suppressed
ClopidogrelClopidogrel Bisulfate29suppressed
EdurantRilpivirine Hcl29suppressed
EzetimibeEzetimibe29suppressed
FenofibrateFenofibrate Nanocrystallized29suppressed
Metformin Hcl ErMetformin Hcl29suppressed
Ibandronate SodiumIbandronate Sodium27suppressed
Icosapent EthylIcosapent Ethyl27suppressed
TemazepamTemazepam27suppressed
Fluticasone PropionateFluticasone Propionate24suppressed
Triamcinolone AcetonideTriamcinolone Acetonide24suppressed
Meclizine HclMeclizine Hcl22suppressed
ClotrimazoleClotrimazole21suppressed
JardianceEmpagliflozin21suppressed
Testosterone CypionateTestosterone Cypionate21suppressed
Clindamycin PhosphateClindamycin Phosphate20suppressed
Duloxetine HclDuloxetine Hcl20suppressed
Morphine Sulfate ErMorphine Sulfate20suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium19suppressed
Trazodone HclTrazodone Hcl18suppressed
AllopurinolAllopurinol17suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan17suppressed
Levothyroxine SodiumLevothyroxine Sodium17suppressed
MupirocinMupirocin17suppressed
Azelastine HclAzelastine Hcl15suppressed
IsentressRaltegravir Potassium15suppressed
KetoconazoleKetoconazole15suppressed
Sertraline HclSertraline Hcl15suppressed
Varenicline TartrateVarenicline Tartrate15suppressed
CabenuvaCabotegravir/Rilpivirine14suppressed
EliquisApixaban14suppressed
Ipratropium BromideIpratropium Bromide14suppressed
MyrbetriqMirabegron14suppressed
PifeltroDoravirine14suppressed
SumatriptanSumatriptan14suppressed
AripiprazoleAripiprazole13suppressed
HydrochlorothiazideHydrochlorothiazide13suppressed
Isentress HdRaltegravir Potassium13suppressed
Pioglitazone HclPioglitazone Hcl13suppressed
Venlafaxine Hcl ErVenlafaxine Hcl13suppressed
Abacavir-LamivudineAbacavir Sulfate/Lamivudine12suppressed
DelstrigoDoravirine/Lamivu/Tenofov Diso12suppressed
EtravirineEtravirine12suppressed
LevofloxacinLevofloxacin12suppressed
Ondansetron OdtOndansetron12suppressed
Bupropion XlBupropion Hcl11suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip11suppressed
Hydrocortisone ValerateHydrocortisone Valerate11suppressed
MaravirocMaraviroc11suppressed
MinoxidilMinoxidil11suppressed
MytesiCrofelemer11suppressed
NateglinideNateglinide11suppressed
Nebivolol HclNebivolol 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 $105.44 · 1 records Gilead Sciences, Inc. 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