Who Paid My Doc
Dal Chun
Retina Specialist Vienna, VA Medical Doctor
NPI 1578587135 CMS profile 25442
8219 Leesburg Pike, #120, Vienna, VA 22182
General payments
$12,309
Research payments
$0
Ownership & investment interest
$0
Research they led as principal investigator
$17,501
Through program year 2025, Dal Chun of Vienna, VA is reported in the CMS Open Payments database as having received $12,309 across 109 general payments and $0 in research payments paid to them. Separately, studies naming them as principal investigator received $17,501 in research payments, paid to institutions rather than to them.
No combined total General, research and ownership are kept apart. Each is reported under its own rules, and ownership is not money that moved at all but the value of a stake held. A meal, a clinical trial grant and a shareholding do not add up to anything meaningful, so this site does not add them. The principal-investigator line is research money paid to institutions for studies they led — not to them — and is not added to anything either.
General payments for this record sit in the 78th percentile of Retina Specialist profiles with reported payments. Percentile describes the distribution, not the conduct.
By program year
7 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $10,112 | 33 | |
| 2024 | General | $552 | 17 | |
| 2023 | General | $593 | 17 | |
| 2022 | General | $284 | 13 | |
| 2021 | General | $358 | 13 | |
| 2020 | General | $217 | 6 | |
| 2019 | General | $193 | 10 |
Beside peers
- Dal Chun
- Retina Specialist median
- Middle half of Retina Specialist
- National median
In program year 2025, general payments to Dal Chun were reported at $10,112. Among 1,235 Retina Specialist profiles paid that year, the median was $457 and the middle half received between $175 and $1,079.
Show as a table
| Year | Dal Chun | Retina Specialist median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $193 | $410 | $157–$1,517 | $163 |
| 2020 | $217 | $168 | $65–$778 | $114 |
| 2021 | $358 | $258 | $101–$1,161 | $132 |
| 2022 | $284 | $418 | $162–$1,488 | $149 |
| 2023 | $593 | $476 | $178–$1,312 | $160 |
| 2024 | $552 | $520 | $188–$1,372 | $164 |
| 2025 | $10,112 | $457 | $175–$1,079 | $169 |
Breakdown
A payment can name more than one product, so these amounts overlap and do not add up to the general-payment figure.
Prescribing to Medicare patients
Part D · data year 2024 · 7 drugsPart D claims
277
Drug cost
$7,835
Branded share of claims
5.4%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Prednisolone Acetate | Generic | 68 | $2,961 | |
| Ketorolac Tromethamine | Generic | 94 | $2,718 | |
| Brimonidine Tartrate | Generic | 35 | $1,159 | |
| Latanoprost | Generic | 19 | $348 | |
| Timolol Maleate | Generic | 18 | $254 | |
| Ofloxacin | Generic | 28 | $234 | |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | Brand | 15 | $162 |
Drug cost is what was paid for the drugs at the pharmacy — by Medicare, the patient and others — and is not money to the prescriber. Medicare Part D only: drugs dispensed to Medicare beneficiaries. A drug with fewer than 11 claims for this prescriber is not published, so a missing drug does not mean zero. The medians are for the 18,260 Part D prescribers listed as Ophthalmology; they describe a distribution and say nothing about conduct.
Billing to Medicare
Part B · data year 2024 · 49 billing codesPaid by Medicare
$3,291,918
Medicare patients
1,256
Services billed
34,714
| Condition among their Medicare patients | Relative to the most common | Share of patients |
|---|---|---|
| High blood pressure | 66% | |
| Arthritis | 45% | |
| Diabetes | 24% | |
| Ischemic heart disease | 22% | |
| Osteoporosis | 17% | |
| Chronic kidney disease | 16% | |
| Cancer | 16% | |
| Atrial fibrillation | 15% |
| Drug given in the clinic | Where | Patients | Services | Paid by Medicare |
|---|---|---|---|---|
| Injection, aflibercept hd, 1 mg J0177 | Office | 146 | 5,200 | $1,374,959 |
| Injection, faricimab-svoa, 0.1 mg J2777 | Office | 78 | 15,840 | $436,325 |
| Injection, avacincaptad pegol, 0.1 mg J2782 | Office | 23 | 2,620 | $226,498 |
| Injection, aflibercept, 1 mg J0178 | Office | 67 | 322 | $213,247 |
Medicare Part B only: services billed to Medicare. Rows covering fewer than 11 beneficiaries are not published. Only drugs given in the clinic are itemised here; the rest of what this provider billed is in the total above.
Payments and prescribing
5 products · payments 2024Two separate records. The payments come from Open Payments and the claims from Medicare. They are set side by side because they name the same product; they do not show that a payment affected a prescription.
| Product | Paid by | Related payments | Part D claims | Part B services |
|---|---|---|---|---|
| Izervay |
|
$218 | — | 2,620 |
| OZURDEX |
|
$118 | — | — |
| EYLEA HD |
|
$93 | — | 5,200 |
| VABYSMO |
|
$55 | — | 15,840 |
| Syfovre |
|
$34 | — | — |
A dash means Medicare published no figure for this doctor and product — fewer than 11 claims, or the product is not covered under that part — which is not the same as none. Payments are general payments only; one that names several products is split evenly between them, so an amount is payments related to the product, not money paid for it.
Records
109 reportedEvery payment, record by record
Date, company, amount, what it was for and the product named — filter by year, kind and company, or download as CSV.
Other Retina Specialist in Virginia
Related records
Retina Specialist in Virginia
Practitioners in the same specialty and state, ranked by reported value.
All Retina Specialist
Everyone recorded under this specialty, nationwide.
Doctors in Virginia
Every practitioner in the state with a reported payment.
How to read this page
What each amount means, and what it does not mean.
What this means
U.S. law requires drug and medical device manufacturers to report payments and transfers of value they make to physicians and teaching hospitals. The Centers for Medicare & Medicaid Services publishes that record each year. This page shows what was reported about this person, and nothing else.
An ownership interest is different from the other two. It is not a payment: it is a stake — shares, options, a partnership holding — that a physician or an immediate family member held in a manufacturer during that year. The figure shown is what the stake was reported to be worth.
Research payments frequently pass through a clinician to the institution running a trial, and rarely represent personal income. They should be read differently from general payments.