Healthcare provider profile · identity verified

William A Segal, M.D.

Allopathic & Osteopathic Physicians|Ophthalmology · DULUTH, GA · NPI 1275698516

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 William A Segal, M.D. received $1,621.87 in general payments during 2025 across 36 reported records.

Alcon Vision LLC accounted for 37.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 25 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Lumigan, Rocklatan, Tyrvaya, Vyzulta, Xiidra.

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 25 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 Rocklatan as an associated drug or biological on 12237 records involving 5351 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Rocklatan by this doctor in 2024.

Bausch & Lomb Americas 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 VYZULTA as an associated drug or biological on 10850 records involving 5317 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Vyzulta by this doctor in 2024.

Bausch & Lomb Americas 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 XIIDRA as an associated drug or biological on 28163 records involving 11019 distinct recipient NPIs. Public Medicare Part D data also shows 48 claims for Xiidra by this doctor in 2024.

Oyster Point Pharma, 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 TYRVAYA as an associated drug or biological on 8925 records involving 5041 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Tyrvaya by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,621.87

36 reported records · 14 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
Alcon Vision LLC Unresolved — no canonical attribution shown $609.2237.6%72025
Mallinckrodt Hospital Products Inc. Unresolved — no canonical attribution shown $189.5111.7%52025
LENSAR, Inc. Unresolved — no canonical attribution shown $162.6410.0%12025
Johnson & Johnson Surgical Vision, Inc. Unresolved — no canonical attribution shown $129.788.0%12025
Dompe US, Inc. Unresolved — no canonical attribution shown $122.107.5%42025
Amgen Inc. Unresolved — no canonical attribution shown $93.085.7%32025
Bausch & Lomb Americas Inc. Unresolved — no canonical attribution shown $92.965.7%52025
SUN PHARMACEUTICAL INDUSTRIES INC. Unresolved — no canonical attribution shown $55.233.4%22025
Rayner Intraocular Lenses Limited Unresolved — no canonical attribution shown $40.732.5%22025
Oyster Point Pharma, Inc. Unresolved — no canonical attribution shown $38.542.4%22025
ABBVIE INC. Unresolved — no canonical attribution shown $27.161.7%12025
Tarsus Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $24.511.5%12025
Merz Pharmaceuticals, LLC Unresolved — no canonical attribution shown $19.981.2%12025
Carl Zeiss Meditec USA, Inc. Unresolved — no canonical attribution shown $16.431.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,534.1735
Education$87.701

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
Clareon
Normalized: clareon
Device Alcon Vision LLC $300.27 3 2025
Source payment records
ACTHAR
Normalized: acthar
Biological Mallinckrodt Hospital Products Inc. $189.51 5 2025
Source payment records
LENSAR LASER SYSTEM
Normalized: lensar laser system
Device LENSAR, Inc. $162.64 1 2025
Source payment records
Clareon PanOptix Pro
Normalized: clareon panoptix pro
Device Alcon Vision LLC $150.00 1 2025
Source payment records
AMO PHACO NEEDLE
Normalized: amo phaco needle
Device Johnson & Johnson Surgical Vision, Inc. $129.78 1 2025
Source payment records
OXERVATE
Normalized: oxervate
Drug Dompe US, Inc. $122.10 4 2025
Source payment records
UNITY
Normalized: unity
Device Alcon Vision LLC $101.65 1 2025
Source payment records
TEPEZZA
Normalized: tepezza
Biological Amgen Inc. $93.08 3 2025
Source payment records
Cequa
Normalized: cequa
Drug SUN PHARMACEUTICAL INDUSTRIES INC. $55.23 2 2025
Source payment records
RAYNER CATARACT SET 1
Normalized: rayner cataract set 1
Device Rayner Intraocular Lenses Limited $40.73 2 2025
Source payment records
RayOne Aspheric
Normalized: rayone aspheric
Device Rayner Intraocular Lenses Limited $40.73 2 2025
Source payment records
RayOne EMV
Normalized: rayone emv
Device Rayner Intraocular Lenses Limited $40.73 2 2025
Source payment records
RayOne Spheric
Normalized: rayone spheric
Device Rayner Intraocular Lenses Limited $40.73 2 2025
Source payment records
TYRVAYA
Normalized: tyrvaya
Drug Oyster Point Pharma, Inc. $38.54 2 2025
Source payment records
Rocklatan
Normalized: rocklatan
Drug Alcon Vision LLC $33.89 1 2025
Source payment records
MIEBO
Normalized: miebo
Drug Bausch & Lomb Americas Inc. $32.53 2 2025
Source payment records
XIIDRA
Normalized: xiidra
Drug Bausch & Lomb Americas Inc. $32.53 2 2025
Source payment records
LUMIGAN
Normalized: lumigan
Drug ABBVIE INC. $27.16 1 2025
Source payment records
XDEMVY
Normalized: xdemvy
Drug Tarsus Pharmaceuticals, Inc. $24.51 1 2025
Source payment records
VYZULTA
Normalized: vyzulta
Drug Bausch & Lomb Americas Inc. $24.47 1 2025
Source payment records
TRYPTYR
Normalized: tryptyr
Drug Alcon Vision LLC $23.41 1 2025
Source payment records
Xeomin
Normalized: xeomin
Biological Merz Pharmaceuticals, LLC $19.98 1 2025
Source payment records
ScoutPro Osmolarity System
Normalized: scoutpro osmolarity system
Device Bausch & Lomb Americas Inc. $19.27 1 2025
Source payment records
enVista Envy IOL
Normalized: envista envy iol
Device Bausch & Lomb Americas Inc. $16.69 1 2025
Source payment records
CIRRUS HD-OCT
Normalized: cirrus hd oct
Device Carl Zeiss Meditec USA, Inc. $16.43 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 25
Beneficiary count suppressed
exact normalized Medicare Part D
Rocklatan
rocklatan
2025 Rocklatan 2024 29
Beneficiary count suppressed
exact normalized Medicare Part D
TYRVAYA
tyrvaya
2025 Tyrvaya 2024 24
Beneficiary count suppressed
exact normalized Medicare Part D
VYZULTA
vyzulta
2025 Vyzulta 2024 17
Beneficiary count suppressed
exact normalized Medicare Part D
XIIDRA
xiidra
2025 Xiidra 2024 48 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
25 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
29 suppressed by CMS
Bausch & Lomb Americas Inc.
Exact reporting entity; no affiliate inference
2025 VYZULTA
open payments reported associated product
CMS Open Payments — General Payments
10850 supporting records · 5317 recipient NPIs · example record 1254730226
Vyzulta · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
Bausch & Lomb Americas Inc.
Exact reporting entity; no affiliate inference
2025 XIIDRA
open payments reported associated product
CMS Open Payments — General Payments
28163 supporting records · 11019 recipient NPIs · example record 1254730224
Xiidra · 2024
Exact normalized brand match · 1 Part D row
48 17
Oyster Point Pharma, Inc.
Exact reporting entity; no affiliate inference
2025 TYRVAYA
open payments reported associated product
CMS Open Payments — General Payments
8925 supporting records · 5041 recipient NPIs · example record 1238388111
Tyrvaya · 2024
Exact normalized brand match · 1 Part D row
24 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
LatanoprostLatanoprost498171
Timolol MaleateTimolol Maleate19875
Brimonidine TartrateBrimonidine Tartrate15568
Azelastine HclAzelastine Hcl9843
Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat8827
Prednisolone AcetatePrednisolone Acetate8068
ErythromycinErythromycin Base7352
XiidraLifitegrast4817
RestasisCyclosporine3316
OfloxacinOfloxacin3028
RocklatanNetarsudil Mesylat/Latanoprost29suppressed
Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol26suppressed
LumiganBimatoprost25suppressed
TyrvayaVarenicline Tartrate24suppressed
Minocycline HclMinocycline Hcl2117
ValacyclovirValacyclovir Hcl20suppressed
CombiganBrimonidine Tartrate/Timolol19suppressed
TravoprostTravoprost18suppressed
Doxycycline HyclateDoxycycline Hyclate1717
VyzultaLatanoprostene Bunod17suppressed
Dorzolamide HclDorzolamide Hcl16suppressed
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha1512
Dorzolamide-TimololDorzolamide/Timolol/Pf13suppressed
Epinastine HclEpinastine Hcl13suppressed
Loteprednol EtabonateLoteprednol Etabonate13suppressed

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 $1,621.87 · 36 records Alcon Vision LLC ACTHAR, AMO PHACO NEEDLE, CIRRUS HD-OCT, Cequa, Clareon, Clareon PanOptix Pro, LENSAR LASER SYSTEM, LUMIGAN, MIEBO, OXERVATE, RAYNER CATARACT SET 1, RayOne Aspheric, RayOne EMV, RayOne Spheric, Rocklatan, ScoutPro Osmolarity System, TEPEZZA, TRYPTYR, TYRVAYA, UNITY, VYZULTA, XDEMVY, XIIDRA, Xeomin, enVista Envy IOL 5
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