Who Paid My Doc
Mark Song
Nephrology Los Angeles, CA Medical Doctor
NPI 1326068560 CMS profile 150446
3663 W 6Th St Ste 307, Los Angeles, CA 90020
General payments
$24,268
Research payments
$0
Ownership & investment interest
$0
Through program year 2025, Mark Song of Los Angeles, CA is reported in the CMS Open Payments database as having received $24,268 across 1,307 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 93rd percentile of Nephrology 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 | $2,614 | 111 | |
| 2024 | General | $2,963 | 136 | |
| 2023 | General | $3,149 | 163 | |
| 2022 | General | $3,452 | 181 | |
| 2021 | General | $3,962 | 216 | |
| 2020 | General | $3,491 | 199 | |
| 2019 | General | $4,638 | 301 |
Beside peers
- Mark Song
- Nephrology median
- Middle half of Nephrology
- National median
In program year 2025, general payments to Mark Song were reported at $2,614. Among 8,186 Nephrology profiles paid that year, the median was $310 and the middle half received between $104 and $880.
Show as a table
| Year | Mark Song | Nephrology median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $4,638 | $236 | $90–$588 | $163 |
| 2020 | $3,491 | $135 | $46–$364 | $114 |
| 2021 | $3,962 | $202 | $67–$551 | $132 |
| 2022 | $3,452 | $242 | $77–$695 | $149 |
| 2023 | $3,149 | $254 | $84–$766 | $160 |
| 2024 | $2,963 | $300 | $99–$852 | $164 |
| 2025 | $2,614 | $310 | $104–$880 | $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 · 269 drugsPart D claims
38,183
Drug cost
$7,976,121
Branded share of claims
34.3%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Creon Lipase/Protease/Amylase | Brand | 868 | $1,295,080 | |
| Farxiga Dapagliflozin Propanediol | Brand | 825 | $689,018 | |
| Jardiance Empagliflozin | Brand | 670 | $592,734 | |
| Vascepa Icosapent Ethyl | Brand | 1,243 | $573,145 | |
| Januvia Sitagliptin Phosphate | Brand | 510 | $422,780 | |
| Zenpep Lipase/Protease/Amylase | Brand | 196 | $393,795 | |
| Janumet Sitagliptin Phos/Metformin Hcl | Brand | 358 | $282,333 | |
| Tradjenta Linagliptin | Brand | 353 | $272,743 | |
| Linzess Linaclotide | Brand | 346 | $262,018 | |
| Kerendia Finerenone | Brand | 283 | $254,683 |
The 10 drugs with the highest cost, of 269 counted.
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 104,182 Part D prescribers listed as Internal Medicine; they describe a distribution and say nothing about conduct.
Billing to Medicare
Part B · data year 2024 · 39 billing codesPaid by Medicare
$635,880
Medicare patients
695
Services billed
7,412
| Condition among their Medicare patients | Relative to the most common | Share of patients |
|---|---|---|
| Diabetes | 75% | |
| High blood pressure | 75% | |
| Chronic kidney disease | 58% | |
| Arthritis | 51% | |
| Osteoporosis | 35% | |
| Ischemic heart disease | 32% | |
| Heart failure | 20% | |
| Alzheimer's or dementia | 20% |
| Drug given in the clinic | Where | Patients | Services | Paid by Medicare |
|---|---|---|---|---|
| 5% dextrose/normal saline (500 ml = 1 unit) J7042 | Office | 14 | 44 | $37 |
| Injection, ceftriaxone sodium, per 250 mg J0696 | Office | 12 | 56 | $16 |
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
First 5 of 31 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 |
|---|---|---|---|---|
| JARDIANCE |
|
$443 | 670 | — |
| Veltassa |
|
$200 | 19 | — |
| FARXIGA |
|
$189 | 825 | — |
| Ozempic |
|
$154 | 95 | — |
| KRYSTEXXA |
|
$144 | — | — |
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.
See more in the dashboard: 25 with a free account, all 31 with PatronRecords
1,307 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 Nephrology in California
Related records
Nephrology in California
Practitioners in the same specialty and state, ranked by reported value.
All Nephrology
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.