Who Paid My Doc
Joan Ryoo
Therapeutic Radiology Los Angeles, CA Medical Doctor
NPI 1699854596 CMS profile 639365
4950 W Sunset Blvd, Second Floor, Los Angeles, CA 90027
General payments
$572
Research payments
$0
Ownership & investment interest
$0
Through program year 2025, Joan Ryoo of Los Angeles, CA is reported in the CMS Open Payments database as having received $572 across 16 general payments and $0 in research payments paid 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.
General payments for this record sit in the 61st percentile of Therapeutic Radiology 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 | $218 | 2 | |
| 2024 | General | $28 | 1 | |
| 2023 | General | $118 | 4 | |
| 2022 | General | $111 | 4 | |
| 2021 | General | $48 | 2 | |
| 2020 | General | $21 | 1 | |
| 2019 | General | $29 | 2 |
Beside peers
- Joan Ryoo
- Therapeutic Radiology median
- Middle half of Therapeutic Radiology
- National median
In program year 2025, general payments to Joan Ryoo were reported at $218. Among 82 Therapeutic Radiology profiles paid that year, the median was $179 and the middle half received between $54 and $602.
Show as a table
| Year | Joan Ryoo | Therapeutic Radiology median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $29 | $108 | $31–$339 | $163 |
| 2020 | $21 | $48 | $28–$197 | $114 |
| 2021 | $48 | $72 | $23–$391 | $132 |
| 2022 | $111 | $77 | $31–$399 | $149 |
| 2023 | $118 | $148 | $55–$613 | $160 |
| 2024 | $28 | $172 | $45–$795 | $164 |
| 2025 | $218 | $179 | $54–$602 | $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 · 5 drugsPart D claims
111
Drug cost
$2,530
Branded share of claims
34.2%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Ssd Silver Sulfadiazine | Brand | 17 | $671 | |
| Hydrocortisone | Generic | 25 | $603 | |
| Tamsulosin Hcl | Generic | 36 | $572 | |
| Silver Sulfadiazine | Generic | 12 | $470 | |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | Brand | 21 | $215 |
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 3,680 Part D prescribers listed as Radiation Oncology; they describe a distribution and say nothing about conduct.
Billing to Medicare
Part B · data year 2024 · 19 billing codesPaid by Medicare
$13,193
Medicare patients
20
Services billed
77
| Condition among their Medicare patients | Relative to the most common | Share of patients |
|---|---|---|
| Cancer | 75% | |
| High blood pressure | 60% |
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.
Records
16 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 Therapeutic Radiology in California
Mack Roach
Therapeutic Radiology · San Francisco, CA
Bryan Chang
Therapeutic Radiology · Torrance, CA
Robert Johnson
Therapeutic Radiology · San Luis Obispo, CA
John Clark
Therapeutic Radiology · Redding, CA
Reinhard Schulte
Therapeutic Radiology · La Jolla, CA
Pauling Chang
Therapeutic Radiology · Sunnyvale, CA
Related records
Therapeutic Radiology in California
Practitioners in the same specialty and state, ranked by reported value.
All Therapeutic Radiology
Everyone recorded under this specialty, nationwide.
Doctors in California
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.