Healthcare provider profile · identity verified

Aaron Michael Gerstenmaier, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · COLMAR MANOR, MD · NPI 1851602767

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 Aaron Michael Gerstenmaier, M.D. received $24,394.66 in general payments during 2025 across 30 reported records.

ViiV Healthcare Company accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

ViiV Healthcare Company reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported DOVATO as an associated drug or biological on 18732 records involving 3540 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Dovato by this doctor in 2024.

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

Payment overview · 2025

General Payments

$24,394.66

30 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
ViiV Healthcare Company Unresolved — no canonical attribution shown $24,394.66100.0%302025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$20,800.005
Travel and Lodging$2,472.9510
Food and Beverage$1,121.7115

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

Reported productTypeReported companyRelated amount*RecordsYear
CABENUVA
Normalized: cabenuva
Drug ViiV Healthcare Company $21,655.36 8 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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
ViiV Healthcare Company
Exact reporting entity; no affiliate inference
2025 DOVATO
open payments reported associated product
CMS Open Payments — General Payments
18732 supporting records · 3540 recipient NPIs · example record 1189508902
Dovato · 2024
Exact normalized brand match · 1 Part D row
12 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 Calcium16744
BiktarvyBictegrav/Emtricit/Tenofov Ala81suppressed
GabapentinGabapentin5813
Amlodipine BesylateAmlodipine Besylate5720
Albuterol Sulfate HfaAlbuterol Sulfate5612
DescovyEmtricitabine/Tenofov Alafenam56suppressed
TivicayDolutegravir Sodium50suppressed
NaproxenNaproxen43suppressed
OmeprazoleOmeprazole42suppressed
FurosemideFurosemide38suppressed
LisinoprilLisinopril3711
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide33suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl32suppressed
Duloxetine HclDuloxetine Hcl32suppressed
Pantoprazole SodiumPantoprazole Sodium32suppressed
Montelukast SodiumMontelukast Sodium30suppressed
Triamcinolone AcetonideTriamcinolone Acetonide30suppressed
Metoprolol SuccinateMetoprolol Succinate26suppressed
Fluticasone PropionateFluticasone Propionate25suppressed
Glipizide ErGlipizide24suppressed
JardianceEmpagliflozin24suppressed
Metformin Hcl ErMetformin Hcl24suppressed
IbuprofenIbuprofen23suppressed
Losartan PotassiumLosartan Potassium21suppressed
Tamsulosin HclTamsulosin Hcl21suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim20suppressed
MounjaroTirzepatide19suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride18suppressed
PrezcobixDarunavir/Cobicistat18suppressed
GenvoyaElviteg/Cob/Emtri/Tenof Alafen17suppressed
MethimazoleMethimazole16suppressed
Rosuvastatin CalciumRosuvastatin Calcium16suppressed
HydrochlorothiazideHydrochlorothiazide14suppressed
JulucaDolutegravir/Rilpivirine14suppressed
SymtuzaDarunavir/Cob/Emtri/Tenof Alaf14suppressed
EtravirineEtravirine13suppressed
Quetiapine FumarateQuetiapine Fumarate13suppressed
Sure Comfort Pen NeedlePen Needle, Diabetic13suppressed
Verapamil ErVerapamil Hcl13suppressed
DovatoDolutegravir Sodium/Lamivudine12suppressed
Easy Touch Alcohol Prep PadsAlcohol Antiseptic Pads12suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen12suppressed
ValacyclovirValacyclovir Hcl12suppressed
JanuviaSitagliptin Phosphate11suppressed
LantusInsulin Glargine,hum.Rec.Anlog11suppressed
LetrozoleLetrozole11suppressed
Metformin HclMetformin Hcl11suppressed
Tramadol HclTramadol Hcl11suppressed
Vitamin D2Ergocalciferol (Vitamin D2)11suppressed

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 $24,394.66 · 30 records ViiV Healthcare Company CABENUVA 1
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