Healthcare provider profile · identity verified

Thomas James Markus, O.D.

Eye and Vision Services Providers|Optometrist · HOUSTON, TX · NPI 1467419903

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 Thomas James Markus, O.D. received $356.71 in general payments during 2025 across 13 reported records.

Harrow Eye, LLC accounted for 29.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 10 associated products.

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

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 LUMIGAN as an associated drug or biological on 25016 records involving 7645 distinct recipient NPIs. Public Medicare Part D data also shows 35 claims for Lumigan by this doctor in 2024.

Alcon Vision 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 Rhopressa as an associated drug or biological on 1524 records involving 961 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Rhopressa by this doctor in 2024.

Alcon Vision 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 Rocklatan as an associated drug or biological on 12237 records involving 5351 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Rocklatan by this doctor in 2024.

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

Payment overview · 2025

General Payments

$356.71

13 reported records · 7 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
Harrow Eye, LLC Unresolved — no canonical attribution shown $104.2229.2%42025
Alcon Vision LLC Unresolved — no canonical attribution shown $87.3424.5%32025
Genentech USA, Inc. Unresolved — no canonical attribution shown $51.9714.6%22025
Tarsus Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $38.1810.7%12025
ABBVIE INC. Unresolved — no canonical attribution shown $28.568.0%12025
Thea Pharma Inc. Unresolved — no canonical attribution shown $24.316.8%12025
Oyster Point Pharma, Inc. Unresolved — no canonical attribution shown $22.136.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$356.7113

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
VEVYE
Normalized: vevye
Drug Harrow Eye, LLC $84.10 3 2025
Source payment records
Vabysmo
Normalized: vabysmo
Drug Genentech USA, Inc. $51.97 2 2025
Source payment records
XDEMVY
Normalized: xdemvy
Drug Tarsus Pharmaceuticals, Inc. $38.18 1 2025
Source payment records
Precision7
Normalized: precision7
Device Alcon Vision LLC $33.33 1 2025
Source payment records
TRYPTYR
Normalized: tryptyr
Drug Alcon Vision LLC $31.14 1 2025
Source payment records
LUMIGAN
Normalized: lumigan
Drug ABBVIE INC. $28.56 1 2025
Source payment records
IYUZEH
Normalized: iyuzeh
Drug Thea Pharma Inc. $24.31 1 2025
Source payment records
RYZUMVI
Normalized: ryzumvi
Drug Oyster Point Pharma, Inc. $22.13 1 2025
Source payment records
TYRVAYA
Normalized: tyrvaya
Drug Oyster Point Pharma, Inc. $22.13 1 2025
Source payment records
ILEVRO
Normalized: ilevro
Drug Harrow Eye, LLC $20.12 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
LUMIGAN
lumigan
2025 Lumigan 2024 35 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 LUMIGAN
open payments reported associated product
CMS Open Payments — General Payments
25016 supporting records · 7645 recipient NPIs · example record 1201352548
Lumigan · 2024
Exact normalized brand match · 1 Part D row
35 11
Alcon Vision LLC
Exact reporting entity; no affiliate inference
2025 Rhopressa
open payments reported associated product
CMS Open Payments — General Payments
1524 supporting records · 961 recipient NPIs · example record 1207357314
Rhopressa · 2024
Exact normalized brand match · 1 Part D row
22 suppressed by CMS
Alcon Vision LLC
Exact reporting entity; no affiliate inference
2025 Rocklatan
open payments reported associated product
CMS Open Payments — General Payments
12237 supporting records · 5351 recipient NPIs · example record 1207357016
Rocklatan · 2024
Exact normalized brand match · 1 Part D row
14 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
LatanoprostLatanoprost21770
Timolol MaleateTimolol Maleate13133
Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat10537
Brimonidine TartrateBrimonidine Tartrate8629
Prednisolone AcetatePrednisolone Acetate5739
Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol4714
FluorometholoneFluorometholone4522
Ketorolac TromethamineKetorolac Tromethamine4316
ProlensaBromfenac Sodium3714
LumiganBimatoprost3511
BrinzolamideBrinzolamide25suppressed
CyclosporineCyclosporine22suppressed
Dorzolamide HclDorzolamide Hcl22suppressed
RhopressaNetarsudil Mesylate22suppressed
RestasisCyclosporine18suppressed
RocklatanNetarsudil Mesylat/Latanoprost14suppressed
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha1312
Bromfenac SodiumBromfenac Sodium12suppressed
CombiganBrimonidine Tartrate/Timolol12suppressed
TravoprostTravoprost12suppressed
Dorzolamide-TimololDorzolamide/Timolol/Pf11suppressed
XiidraLifitegrast11suppressed

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 $356.71 · 13 records Harrow Eye, LLC ILEVRO, IYUZEH, LUMIGAN, Precision7, RYZUMVI, TRYPTYR, TYRVAYA, VEVYE, Vabysmo, XDEMVY 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