Healthcare provider profile · identity verified

Tamara B Horwich, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · LOS ANGELES, CA · NPI 1346281748

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 Tamara B Horwich, MD received $4,710.00 in general payments during 2025 across 2 reported records.

Novo Nordisk Inc accounted for 100.0% of that reported general-payment amount.

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

A separate comparison found the same explicitly named product in public Medicare Part D data: Ozempic.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$4,710.00

2 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $4,710.00100.0%22025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$4,710.002

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
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $4,710.00 2 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
Ozempic
ozempic
2025 Ozempic 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D

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
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
15 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
Metoprolol SuccinateMetoprolol Succinate16140
Amlodipine BesylateAmlodipine Besylate14141
Rosuvastatin CalciumRosuvastatin Calcium11737
Atorvastatin CalciumAtorvastatin Calcium9031
EzetimibeEzetimibe8431
EliquisApixaban6613
Losartan PotassiumLosartan Potassium6418
CarvedilolCarvedilol5915
FarxigaDapagliflozin Propanediol5711
FurosemideFurosemide5518
EntrestoSacubitril/Valsartan48suppressed
LisinoprilLisinopril4715
SpironolactoneSpironolactone3612
Metoprolol TartrateMetoprolol Tartrate3512
JardianceEmpagliflozin33suppressed
Pravastatin SodiumPravastatin Sodium2912
NexletolBempedoic Acid28suppressed
Repatha SureclickEvolocumab28suppressed
Potassium ChloridePotassium Chloride25suppressed
NitroglycerinNitroglycerin2417
ClopidogrelClopidogrel Bisulfate23suppressed
EplerenoneEplerenone23suppressed
SimvastatinSimvastatin23suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril20suppressed
Repatha SyringeEvolocumab19suppressed
HydrochlorothiazideHydrochlorothiazide18suppressed
Carvedilol ErCarvedilol Phosphate17suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate17suppressed
IrbesartanIrbesartan16suppressed
Nifedipine ErNifedipine16suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl15suppressed
OzempicSemaglutide15suppressed
XareltoRivaroxaban15suppressed
Praluent PenAlirocumab14suppressed
ValsartanValsartan14suppressed
CamzyosMavacamten13suppressed
LodocoColchicine12suppressed
Hydralazine HclHydralazine Hcl11suppressed
LivaloPitavastatin Calcium11suppressed
TorsemideTorsemide11suppressed

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 $4,710.00 · 2 records Novo Nordisk Inc Ozempic 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