Payment overview · 2025
General Payments
$639.55
22 reported records · 7 companies
Healthcare provider profile · identity verified
Peter Knowlton, M.D.
Allopathic & Osteopathic Physicians|Ophthalmology · CHARLESTON, SC · NPI 1740523604
Verified facts
What the public records show
CMS Open Payments records show Peter Knowlton, M.D. received $639.55 in general payments during 2025 across 22 reported records.
NEW WORLD MEDICAL,INC. accounted for 37.9% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 17 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Eysuvis, Lumigan, Miebo, Rocklatan, 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 189 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 EYSUVIS as an associated drug or biological on 4201 records involving 2750 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Eysuvis 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 28 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 76 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 MIEBO as an associated drug or biological on 34133 records involving 12967 distinct recipient NPIs. Public Medicare Part D data also shows 56 claims for Miebo 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 36 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 38 claims for Xiidra by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
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 company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| NEW WORLD MEDICAL,INC. | Unresolved — no canonical attribution shown | $242.13 | 37.9% | 2 | 2025 |
| Alcon Vision LLC | Unresolved — no canonical attribution shown | $169.77 | 26.6% | 9 | 2025 |
| Tarsus Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $74.03 | 11.6% | 3 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $60.75 | 9.5% | 3 | 2025 |
| Bausch & Lomb Americas Inc. | Unresolved — no canonical attribution shown | $50.05 | 7.8% | 3 | 2025 |
| Harrow Eye, LLC | Unresolved — no canonical attribution shown | $23.61 | 3.7% | 1 | 2025 |
| SUN PHARMACEUTICAL INDUSTRIES INC. | Unresolved — no canonical attribution shown | $19.21 | 3.0% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $639.55 | 22 |
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 product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| Ahmed Glaucoma Valve Normalized: ahmed glaucoma valve |
Device | NEW WORLD MEDICAL,INC. | $242.13 | 2 | 2025 |
Source payment records
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| Clearpath Normalized: clearpath |
Device | NEW WORLD MEDICAL,INC. | $242.13 | 2 | 2025 |
Source payment records
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| Kahook Dual Blade Normalized: kahook dual blade |
Device | NEW WORLD MEDICAL,INC. | $242.13 | 2 | 2025 |
Source payment records
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| Streamline Normalized: streamline |
Device | NEW WORLD MEDICAL,INC. | $242.13 | 2 | 2025 |
Source payment records
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| Via360 Normalized: via360 |
Device | NEW WORLD MEDICAL,INC. | $242.13 | 2 | 2025 |
Source payment records
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| XDEMVY Normalized: xdemvy |
Drug | Tarsus Pharmaceuticals, Inc. | $74.03 | 3 | 2025 |
Source payment records
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| Rocklatan Normalized: rocklatan |
Drug | Alcon Vision LLC | $73.07 | 3 | 2025 |
Source payment records
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| TRYPTYR Normalized: tryptyr |
Drug | Alcon Vision LLC | $52.04 | 2 | 2025 |
Source payment records
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| MIEBO Normalized: miebo |
Drug | Bausch & Lomb Americas Inc. | $50.05 | 3 | 2025 |
Source payment records
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| XIIDRA Normalized: xiidra |
Drug | Bausch & Lomb Americas Inc. | $50.05 | 3 | 2025 |
Source payment records
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| LUMIGAN Normalized: lumigan |
Drug | ABBVIE INC. | $41.73 | 2 | 2025 |
Source payment records
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| VEVYE Normalized: vevye |
Drug | Harrow Eye, LLC | $23.61 | 1 | 2025 |
Source payment records
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| Clareon Normalized: clareon |
Device | Alcon Vision LLC | $19.84 | 2 | 2025 |
Source payment records
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| Cequa Normalized: cequa |
Drug | SUN PHARMACEUTICAL INDUSTRIES INC. | $19.21 | 1 | 2025 |
Source payment records
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| DURYSTA Normalized: durysta |
Drug | ABBVIE INC. | $19.02 | 1 | 2025 |
Source payment records
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| XEN GLAUCOMA TREATMENT SYSTEM Normalized: xen glaucoma treatment system |
Device | ABBVIE INC. | $19.02 | 1 | 2025 |
Source payment records
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| EYSUVIS Normalized: eysuvis |
Drug | Alcon Vision LLC | $14.99 | 1 | 2025 |
Source payment records
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* 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 product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| EYSUVIS eysuvis |
2025 | Eysuvis | 2024 | 19 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| LUMIGAN lumigan |
2025 | Lumigan | 2024 | 189 | exact normalized | Medicare Part D |
| MIEBO miebo |
2025 | Miebo | 2024 | 56 | exact normalized | Medicare Part D |
| Rocklatan rocklatan |
2025 | Rocklatan | 2024 | 76 | exact normalized | Medicare Part D |
| XIIDRA xiidra |
2025 | Xiidra | 2024 | 38 | 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 company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| 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 |
189 | 59 |
| Alcon Vision LLC Exact reporting entity; no affiliate inference |
2025 | EYSUVIS open payments reported associated product |
CMS Open Payments — General Payments 4201 supporting records · 2750 recipient NPIs · example record 1207357018 |
Eysuvis · 2024 Exact normalized brand match · 1 Part D row |
19 | suppressed by CMS |
| 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 |
28 | 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 |
76 | 14 |
| Bausch & Lomb Americas Inc. Exact reporting entity; no affiliate inference |
2025 | MIEBO open payments reported associated product |
CMS Open Payments — General Payments 34133 supporting records · 12967 recipient NPIs · example record 1254730224 |
Miebo · 2024 Exact normalized brand match · 1 Part D row |
56 | 19 |
| 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 |
36 | 12 |
| 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 |
38 | 19 |
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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Latanoprost | Latanoprost | 687 | 260 |
| Brimonidine Tartrate | Brimonidine Tartrate | 249 | 79 |
| Timolol Maleate | Timolol Maleate | 220 | 83 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 215 | 72 |
| Lumigan | Bimatoprost | 189 | 59 |
| Neomycin-Polymyxin-Dexameth | Neomycin/Polymyxin B/Dexametha | 176 | 121 |
| Restasis | Cyclosporine | 127 | 51 |
| Prednisolone Acetate | Prednisolone Acetate | 115 | 82 |
| Dorzolamide Hcl | Dorzolamide Hcl | 93 | 34 |
| Rocklatan | Netarsudil Mesylat/Latanoprost | 76 | 14 |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 72 | 63 |
| Brimonidine Tartrate-Timolol | Brimonidine Tartrate/Timolol | 67 | 19 |
| Miebo | Perfluorohexyloctane/Pf | 56 | 19 |
| Cyclosporine | Cyclosporine | 49 | 24 |
| Doxycycline Hyclate | Doxycycline Hyclate | 42 | 29 |
| Xiidra | Lifitegrast | 38 | 19 |
| Vyzulta | Latanoprostene Bunod | 36 | 12 |
| Travoprost | Travoprost | 34 | 13 |
| Carteolol Hcl | Carteolol Hcl | 33 | 13 |
| Combigan | Brimonidine Tartrate/Timolol | 30 | 13 |
| Rhopressa | Netarsudil Mesylate | 28 | suppressed |
| Erythromycin | Erythromycin Base | 27 | 12 |
| Eysuvis | Loteprednol Etabonate | 19 | suppressed |
| Ofloxacin | Ofloxacin | 18 | 16 |
| Acetazolamide | Acetazolamide | 12 | suppressed |
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.
| Year | General Payments | Main payer | Explicit products | Company overlaps | Part D coverage |
|---|---|---|---|---|---|
| 2025 | $639.55 · 22 records | NEW WORLD MEDICAL,INC. | Ahmed Glaucoma Valve, Cequa, Clareon, Clearpath, DURYSTA, EYSUVIS, Kahook Dual Blade, LUMIGAN, MIEBO, Rocklatan, Streamline, TRYPTYR, VEVYE, Via360, XDEMVY, XEN GLAUCOMA TREATMENT SYSTEM, XIIDRA | 7 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Eysuvis play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with ABBVIE INC.?
- Are there reasonable alternatives I should understand when we discuss treatment options?
- How should I interpret the industry-payment records shown here in the context of my care?
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
How to read this page
- Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
- Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
- Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
- Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
- When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.
Loaded source releases
| Dataset | Year | Publication | Source |
|---|---|---|---|
| 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 |
Full methodology · Questions & answers · Report a possible error