Healthcare provider profile · identity verified

Collin John Vas, M.D.

Psychiatry · DALLAS, TX · NPI 1548480999

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
ClonazepamClonazepam17627
Trazodone HclTrazodone Hcl13530
ClozapineClozapine13212
Bupropion XlBupropion Hcl12828
LorazepamLorazepam12520
Venlafaxine Hcl ErVenlafaxine Hcl7517
Duloxetine HclDuloxetine Hcl7419
AlprazolamAlprazolam7216
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine6217
Sertraline HclSertraline Hcl5919
Zolpidem TartrateZolpidem Tartrate5411
Lithium Carbonate ErLithium Carbonate53suppressed
PregabalinPregabalin53suppressed
AripiprazoleAripiprazole4614
Pramipexole DihydrochloridePramipexole Di-Hcl45suppressed
GabapentinGabapentin4413
Quetiapine FumarateQuetiapine Fumarate44suppressed
LamotrigineLamotrigine4212
Nortriptyline HclNortriptyline Hcl41suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate39suppressed
OlanzapineOlanzapine39suppressed
Lithium CarbonateLithium Carbonate3813
Fluoxetine HclFluoxetine Hcl3712
TopiramateTopiramate3711
Divalproex Sodium ErDivalproex Sodium36suppressed
Doxepin HclDoxepin Hcl36suppressed
RisperidoneRisperidone35suppressed
Escitalopram OxalateEscitalopram Oxalate3412
Methylphenidate HclMethylphenidate Hcl3412
Levothyroxine SodiumLevothyroxine Sodium32suppressed
EszopicloneEszopiclone30suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine28suppressed
Lurasidone HclLurasidone Hcl28suppressed
Prazosin HclPrazosin Hcl27suppressed
Desipramine HclDesipramine Hcl25suppressed
VraylarCariprazine Hcl22suppressed
Abilify MaintenaAripiprazole20suppressed
QelbreeViloxazine Hcl18suppressed
Alprazolam ErAlprazolam17suppressed
Buspirone HclBuspirone Hcl17suppressed
Fluvoxamine MaleateFluvoxamine Maleate16suppressed
MirtazapineMirtazapine16suppressed
Propranolol Hcl ErPropranolol Hcl15suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
Lisdexamfetamine DimesylateLisdexamfetamine Dimesylate14suppressed
ProzacFluoxetine Hcl14suppressed
Cevimeline HclCevimeline Hcl12suppressed
Clomipramine HclClomipramine Hcl12suppressed
ClozarilClozapine12suppressed
Divalproex SodiumDivalproex Sodium12suppressed
Propranolol HclPropranolol Hcl12suppressed
Bupropion HclBupropion Hcl11suppressed
Hydroxyzine PamoateHydroxyzine Pamoate11suppressed

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