Healthcare provider profile · identity verified

Alexander A Lemmer, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Transplant Hepatology · ATLANTA, GA · NPI 1104168681

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 Alexander A Lemmer, M.D. received $3,758.53 in general payments during 2025 across 51 reported records.

Boston Scientific Corporation accounted for 62.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 13 associated products.

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

Gilead Sciences, 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 Vemlidy as an associated drug or biological on 782 records involving 554 distinct recipient NPIs. Public Medicare Part D data also shows 43 claims for Vemlidy by this doctor in 2024.

Salix Pharmaceuticals, a division of Bausch Health US, 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 XIFAXAN as an associated drug or biological on 101901 records involving 33018 distinct recipient NPIs. Public Medicare Part D data also shows 74 claims for Xifaxan by this doctor in 2024.

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

Payment overview · 2025

General Payments

$3,758.53

51 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
Boston Scientific Corporation Unresolved — no canonical attribution shown $2,338.3762.2%152025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $344.009.2%72025
Amgen Inc. Unresolved — no canonical attribution shown $320.978.5%102025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $205.505.5%82025
OrganOx LTD Unresolved — no canonical attribution shown $154.264.1%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $116.803.1%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $88.682.4%12025
TriSalus Life Sciences, Inc. Unresolved — no canonical attribution shown $51.631.4%22025
Ethicon US, LLC Unresolved — no canonical attribution shown $42.581.1%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $39.751.1%22025
Ferring Pharmaceuticals Inc. Unresolved — no canonical attribution shown $23.070.6%12025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $18.050.5%12025
Intercept Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.870.4%12025

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$2,025.004
Food and Beverage$1,733.5347

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
General - Therapies
Normalized: general therapies
Device Boston Scientific Corporation $2,138.69 13 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $344.00 7 2025
Source payment records
EXALT Model D
Normalized: exalt model d
Device Boston Scientific Corporation $199.68 2 2025
Source payment records
UPLIZNA
Normalized: uplizna
Biological Amgen Inc. $168.18 8 2025
Source payment records
METRA
Normalized: metra
Device OrganOx LTD $154.26 1 2025
Source payment records
TRINAV INFUSION SYSTEM
Normalized: trinav infusion system
Device TriSalus Life Sciences, Inc. $51.63 2 2025
Source payment records
SURGICEL NU-KNIT
Normalized: surgicel nu knit
Device Ethicon US, LLC $42.58 1 2025
Source payment records
VISTASEAL
Normalized: vistaseal
Biological Ethicon US, LLC $42.58 1 2025
Source payment records
PLENVU
Normalized: plenvu
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $39.75 2 2025
Source payment records
  • 2025-07-14 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.18 · Open Payments source
  • 2025-09-08 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.57 · Open Payments source
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $39.75 2 2025
Source payment records
  • 2025-07-14 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.18 · Open Payments source
  • 2025-09-08 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.57 · Open Payments source
REBYOTA
Normalized: rebyota
Biological Ferring Pharmaceuticals Inc. $23.07 1 2025
Source payment records
IQIRVO
Normalized: iqirvo
Drug Ipsen Biopharmaceuticals, Inc $18.05 1 2025
Source payment records
OCALIVA
Normalized: ocaliva
Drug Intercept Pharmaceuticals, Inc. $14.87 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
XIFAXAN
xifaxan
2025 Xifaxan 2024 74 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
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Vemlidy
open payments reported associated product
CMS Open Payments — General Payments
782 supporting records · 554 recipient NPIs · example record 1234350906
Vemlidy · 2024
Exact normalized brand match · 1 Part D row
43 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 XIFAXAN
open payments reported associated product
CMS Open Payments — General Payments
101901 supporting records · 33018 recipient NPIs · example record 1231775337
Xifaxan · 2024
Exact normalized brand match · 1 Part D row
74 15

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
UrsodiolUrsodiol13027
SpironolactoneSpironolactone12334
Mycophenolate MofetilMycophenolate Mofetil8824
TacrolimusTacrolimus8028
FurosemideFurosemide7421
PrednisonePrednisone7420
XifaxanRifaximin7415
BumetanideBumetanide7322
AzathioprineAzathioprine65suppressed
LactuloseLactulose6424
Pantoprazole SodiumPantoprazole Sodium5720
VemlidyTenofovir Alafenamide43suppressed
LevofloxacinLevofloxacin2619
Cyclosporine ModifiedCyclosporine, Modified25suppressed
Ciprofloxacin HclCiprofloxacin Hcl2212
ConstuloseLactulose22suppressed
HydrocortisoneHydrocortisone21suppressed
Ondansetron OdtOndansetron2012
CarvedilolCarvedilol19suppressed
CefuroximeCefuroxime Axetil19suppressed
EliquisApixaban19suppressed
Duloxetine HclDuloxetine Hcl15suppressed
Hydroxyzine HclHydroxyzine Hcl15suppressed
EntecavirEntecavir13suppressed
EplerenoneEplerenone13suppressed
Naltrexone HclNaltrexone Hcl13suppressed
Budesonide EcBudesonide12suppressed
Potassium ChloridePotassium Chloride12suppressed
Budesonide DrBudesonide11suppressed

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 $3,758.53 · 51 records Boston Scientific Corporation EXALT Model D, General - Therapies, IQIRVO, METRA, OCALIVA, PLENVU, REBYOTA, REZDIFFRA, SURGICEL NU-KNIT, TRINAV INFUSION SYSTEM, UPLIZNA, VISTASEAL, XIFAXAN 2
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