Healthcare provider profile · identity verified

William D Mosier, MD

Allopathic & Osteopathic Physicians|Ophthalmology · FULLERTON, CA · NPI 1063553378

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 D Mosier, MD received $872.79 in general payments during 2025 across 37 reported records.

SUN PHARMACEUTICAL INDUSTRIES INC. accounted for 27.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 11 associated products.

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

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 254 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 75 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 40 claims for Rocklatan 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 Simbrinza as an associated drug or biological on 1563 records involving 637 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Simbrinza 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 PROLENSA as an associated drug or biological on 18 records involving 13 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Prolensa 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 56 claims for Vyzulta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$872.79

37 reported records · 9 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
SUN PHARMACEUTICAL INDUSTRIES INC. Unresolved — no canonical attribution shown $236.5727.1%132025
ABBVIE INC. Unresolved — no canonical attribution shown $130.5715.0%52025
Dompe US, Inc. Unresolved — no canonical attribution shown $124.5114.3%52025
Amgen Inc. Unresolved — no canonical attribution shown $91.9810.5%42025
Tarsus Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $77.848.9%22025
Alcon Vision LLC Unresolved — no canonical attribution shown $74.868.6%42025
ABB Con-Cise Optical Group LLC Unresolved — no canonical attribution shown $63.157.2%12025
Bausch & Lomb Americas Inc. Unresolved — no canonical attribution shown $48.835.6%22025
Thea Pharma Inc. Unresolved — no canonical attribution shown $24.482.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$872.7937

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
Cequa
Normalized: cequa
Drug SUN PHARMACEUTICAL INDUSTRIES INC. $236.57 13 2025
Source payment records
LUMIGAN
Normalized: lumigan
Drug ABBVIE INC. $130.57 5 2025
Source payment records
OXERVATE
Normalized: oxervate
Drug Dompe US, Inc. $124.51 5 2025
Source payment records
TEPEZZA
Normalized: tepezza
Biological Amgen Inc. $91.98 4 2025
Source payment records
XDEMVY
Normalized: xdemvy
Drug Tarsus Pharmaceuticals, Inc. $77.84 2 2025
Source payment records
CONTACT LENS
Normalized: contact lens
Device ABB Con-Cise Optical Group LLC $63.15 1 2025
Source payment records
MIEBO
Normalized: miebo
Drug Bausch & Lomb Americas Inc. $48.83 2 2025
Source payment records
HYDRUS Microstent
Normalized: hydrus microstent
Device Alcon Vision LLC $41.35 2 2025
Source payment records
IYUZEH
Normalized: iyuzeh
Drug Thea Pharma Inc. $24.48 1 2025
Source payment records
Rocklatan
Normalized: rocklatan
Drug Alcon Vision LLC $17.58 1 2025
Source payment records
EYSUVIS
Normalized: eysuvis
Drug Alcon Vision LLC $15.93 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 254 exact normalized Medicare Part D
Rocklatan
rocklatan
2025 Rocklatan 2024 40 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
254 96
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
75 27
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
40 12
Alcon Vision LLC
Exact reporting entity; no affiliate inference
2025 Simbrinza
open payments reported associated product
CMS Open Payments — General Payments
1563 supporting records · 637 recipient NPIs · example record 1207357100
Simbrinza · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
Bausch & Lomb Americas Inc.
Exact reporting entity; no affiliate inference
2025 PROLENSA
open payments reported associated product
CMS Open Payments — General Payments
18 supporting records · 13 recipient NPIs · example record 1254766966
Prolensa · 2024
Exact normalized brand match · 1 Part D row
15 12
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
56 20

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
LatanoprostLatanoprost1589498
Timolol MaleateTimolol Maleate632211
Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat615157
Brimonidine TartrateBrimonidine Tartrate27889
LumiganBimatoprost25496
Prednisolone AcetatePrednisolone Acetate224156
MoxifloxacinMoxifloxacin Hcl12991
Dorzolamide HclDorzolamide Hcl8430
Alphagan PBrimonidine Tartrate7525
RhopressaNetarsudil Mesylate7527
GatifloxacinGatifloxacin7149
Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol6224
VyzultaLatanoprostene Bunod5620
BrinzolamideBrinzolamide5123
RocklatanNetarsudil Mesylat/Latanoprost4012
ErythromycinErythromycin Base2826
SimbrinzaBrinzolamide/Brimonidine Tart25suppressed
TravoprostTravoprost2512
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha2320
RestasisCyclosporine16suppressed
Levobunolol HclLevobunolol Hcl15suppressed
ProlensaBromfenac Sodium1512
Bromfenac SodiumBromfenac Sodium13suppressed
Travatan ZTravoprost13suppressed
CombiganBrimonidine Tartrate/Timolol11suppressed

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 $872.79 · 37 records SUN PHARMACEUTICAL INDUSTRIES INC. CONTACT LENS, Cequa, EYSUVIS, HYDRUS Microstent, IYUZEH, LUMIGAN, MIEBO, OXERVATE, Rocklatan, TEPEZZA, XDEMVY 6
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