Healthcare provider profile · identity verified

Eric John Holtrop, M.D.

Internal Medicine · GRASS VALLEY, CA · NPI 1881790459

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 Calcium11936
Levothyroxine SodiumLevothyroxine Sodium8524
PrednisonePrednisone7935
AzithromycinAzithromycin6746
Ibandronate SodiumIbandronate Sodium6322
Tamsulosin HclTamsulosin Hcl6219
Losartan PotassiumLosartan Potassium5515
Pantoprazole SodiumPantoprazole Sodium4612
OmeprazoleOmeprazole4416
Metoprolol SuccinateMetoprolol Succinate4113
SimvastatinSimvastatin3913
Montelukast SodiumMontelukast Sodium37suppressed
Zolpidem TartrateZolpidem Tartrate3512
AllopurinolAllopurinol3411
Metformin HclMetformin Hcl3411
LevofloxacinLevofloxacin3323
PaxlovidNirmatrelvir/Ritonavir3231
FinasterideFinasteride31suppressed
Fluticasone PropionateFluticasone Propionate31suppressed
XareltoRivaroxaban30suppressed
Amlodipine BesylateAmlodipine Besylate29suppressed
Trazodone HclTrazodone Hcl29suppressed
Rosuvastatin CalciumRosuvastatin Calcium28suppressed
AlprazolamAlprazolam25suppressed
EstradiolEstradiol25suppressed
Pravastatin SodiumPravastatin Sodium25suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl24suppressed
LisinoprilLisinopril24suppressed
GabapentinGabapentin23suppressed
HydrochlorothiazideHydrochlorothiazide23suppressed
Escitalopram OxalateEscitalopram Oxalate22suppressed
FluconazoleFluconazole22suppressed
Alendronate SodiumAlendronate Sodium21suppressed
Oxycodone HclOxycodone Hcl21suppressed
Tramadol HclTramadol Hcl21suppressed
Ciprofloxacin HclCiprofloxacin Hcl20suppressed
LorazepamLorazepam20suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen19suppressed
ClonazepamClonazepam18suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav17suppressed
Albuterol Sulfate HfaAlbuterol Sulfate15suppressed
MeloxicamMeloxicam15suppressed
EliquisApixaban14suppressed
Fluoxetine HclFluoxetine Hcl14suppressed
Testosterone CypionateTestosterone Cypionate14suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium13suppressed
FentanylFentanyl13suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol13suppressed
MounjaroTirzepatide13suppressed
Nortriptyline HclNortriptyline Hcl13suppressed
Butalb-Acetaminoph-Caff-CodeinButalbit/Acetamin/Caff/Codeine12suppressed
DutasterideDutasteride12suppressed
Liothyronine SodiumLiothyronine Sodium12suppressed
Methadone HclMethadone Hcl12suppressed
MethotrexateMethotrexate Sodium12suppressed
CarvedilolCarvedilol11suppressed
DexamethasoneDexamethasone11suppressed
Sumatriptan SuccinateSumatriptan Succinate11suppressed

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