Healthcare provider profile · identity verified

David Zweiback

Allopathic & Osteopathic Physicians|Internal Medicine · HILTON HEAD ISLAND, SC · NPI 1457369233

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 David Zweiback received $446.43 in general payments during 2025 across 23 reported records.

Lilly USA, LLC accounted for 15.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 19 associated products.

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

ABBVIE 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Synthroid by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 36 claims for Mounjaro by this doctor in 2024.

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 37 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

$446.43

23 reported records · 13 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
Lilly USA, LLC Unresolved — no canonical attribution shown $71.1715.9%42025
Fidia Pharma USA Inc. Unresolved — no canonical attribution shown $67.4615.1%32025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $66.3114.8%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $43.779.8%22025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $42.349.5%22025
PFIZER INC. Unresolved — no canonical attribution shown $29.326.6%12025
STRATA Skin Sciences, Inc. Unresolved — no canonical attribution shown $25.955.8%22025
Actelion Pharmaceuticals US, Inc. Unresolved — no canonical attribution shown $19.324.3%12025
Collegium Pharmaceutical, Inc. Unresolved — no canonical attribution shown $18.584.2%12025
ABBVIE INC. Unresolved — no canonical attribution shown $16.693.7%12025
Organon LLC Unresolved — no canonical attribution shown $15.893.6%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $15.393.5%12025
Amgen Inc. Unresolved — no canonical attribution shown $14.243.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$446.4323

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
HYALGAN
Normalized: hyalgan
Device Fidia Pharma USA Inc. $67.46 3 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $66.31 3 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $56.74 3 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $29.32 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $29.32 1 2025
Source payment records
XTRAC
Normalized: xtrac
Device STRATA Skin Sciences, Inc. $25.95 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $24.73 1 2025
Source payment records
OPSUMIT
Normalized: opsumit
Drug Actelion Pharmaceuticals US, Inc. $19.32 1 2025
Source payment records
UPTRAVI
Normalized: uptravi
Drug Actelion Pharmaceuticals US, Inc. $19.32 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $19.04 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $19.04 1 2025
Source payment records
XTAMPZA
Normalized: xtampza
Drug Collegium Pharmaceutical, Inc. $18.58 1 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $16.69 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $16.69 1 2025
Source payment records
VTAMA
Normalized: vtama
Drug Organon LLC $15.89 1 2025
Source payment records
RELISTOR
Normalized: relistor
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $15.39 1 2025
Source payment records
  • 2025-08-25 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.39 · Open Payments source
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $14.43 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $14.24 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $14.24 1 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
MOUNJARO
mounjaro
2025 Mounjaro 2024 36
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 37
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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
36 suppressed by CMS
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
37 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
Oxycodone HclOxycodone Hcl20521
Rosuvastatin CalciumRosuvastatin Calcium18330
GabapentinGabapentin11518
Amlodipine BesylateAmlodipine Besylate6412
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine64suppressed
Duloxetine HclDuloxetine Hcl55suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide55suppressed
AlprazolamAlprazolam47suppressed
Metformin HclMetformin Hcl4412
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen44suppressed
OxycontinOxycodone Hcl42suppressed
HydrochlorothiazideHydrochlorothiazide3912
LidocaineLidocaine38suppressed
OzempicSemaglutide37suppressed
Pantoprazole SodiumPantoprazole Sodium37suppressed
PregabalinPregabalin37suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl36suppressed
MounjaroTirzepatide36suppressed
Tamsulosin HclTamsulosin Hcl36suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide35suppressed
Xtampza ErOxycodone Myristate35suppressed
TopiramateTopiramate34suppressed
Atorvastatin CalciumAtorvastatin Calcium3311
EzetimibeEzetimibe33suppressed
Tizanidine HclTizanidine Hcl32suppressed
Albuterol Sulfate HfaAlbuterol Sulfate31suppressed
Levothyroxine SodiumLevothyroxine Sodium29suppressed
LamotrigineLamotrigine27suppressed
Trazodone HclTrazodone Hcl27suppressed
AripiprazoleAripiprazole25suppressed
Escitalopram OxalateEscitalopram Oxalate25suppressed
Losartan PotassiumLosartan Potassium24suppressed
BaclofenBaclofen23suppressed
Morphine Sulfate ErMorphine Sulfate22suppressed
LorazepamLorazepam21suppressed
FurosemideFurosemide19suppressed
CelecoxibCelecoxib18suppressed
KetoconazoleKetoconazole18suppressed
ValsartanValsartan18suppressed
ClopidogrelClopidogrel Bisulfate17suppressed
JanuviaSitagliptin Phosphate17suppressed
Montelukast SodiumMontelukast Sodium17suppressed
Potassium ChloridePotassium Chloride17suppressed
Tramadol HclTramadol Hcl17suppressed
Venlafaxine Hcl ErVenlafaxine Hcl17suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate16suppressed
FinasterideFinasteride16suppressed
PercocetOxycodone Hcl/Acetaminophen16suppressed
ClonazepamClonazepam15suppressed
Telmisartan-HydrochlorothiazidTelmisartan/Hydrochlorothiazid15suppressed
Metoprolol TartrateMetoprolol Tartrate14suppressed
Ondansetron HclOndansetron Hcl14suppressed
PrednisonePrednisone14suppressed
RepaglinideRepaglinide14suppressed
Sildenafil CitrateSildenafil Citrate14suppressed
SynthroidLevothyroxine Sodium14suppressed
TelmisartanTelmisartan14suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter14suppressed
Fenofibric AcidFenofibric Acid (Choline)13suppressed
Methadone HclMethadone Hcl13suppressed
Nebivolol HclNebivolol Hcl13suppressed
Olmesartan-Amlodipine-HctzOlmesartan/Amlodipin/Hcthiazid13suppressed
OmeprazoleOmeprazole13suppressed
Bupropion XlBupropion Hcl12suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine12suppressed
EndocetOxycodone Hcl/Acetaminophen12suppressed
Icosapent EthylIcosapent Ethyl12suppressed
Metformin Hcl ErMetformin Hcl12suppressed
PerphenazinePerphenazine12suppressed
Repatha SureclickEvolocumab12suppressed
Ropinirole HclRopinirole Hcl12suppressed
Trihexyphenidyl HclTrihexyphenidyl Hcl12suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide12suppressed
CarbamazepineCarbamazepine11suppressed
FamotidineFamotidine11suppressed
IbuprofenIbuprofen11suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters11suppressed
Varenicline TartrateVarenicline Tartrate11suppressed
Vitamin D2Ergocalciferol (Vitamin D2)11suppressed
Zolpidem TartrateZolpidem Tartrate11suppressed

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 $446.43 · 23 records Lilly USA, LLC ELIQUIS, EVENITY, HYALGAN, LEQVIO, MOUNJARO, NURTEC ODT, OPSUMIT, Ozempic, PROLIA, QULIPTA, RELISTOR, Rybelsus, UBRELVY, UPTRAVI, VTAMA, Wegovy, XTAMPZA, XTRAC, ZEPBOUND 3
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