Who Paid My Doc
Kumaraswamy Sivakumar
Neuromuscular Medicine Phoenix, AZ Medical Doctor
NPI 1821035254 CMS profile 82129
4545 E Shea Blvd, Ste 175, Phoenix, AZ 85028
General payments
$22,510
Research payments
$3,192
Ownership & investment interest
$0
Research they led as principal investigator
$3,901,438
Through program year 2025, Kumaraswamy Sivakumar of Phoenix, AZ is reported in the CMS Open Payments database as having received $22,510 across 89 general payments and $3,192 in research payments paid to them. Separately, studies naming them as principal investigator received $3,901,438 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 80th percentile of Neuromuscular Medicine profiles with reported payments. Percentile describes the distribution, not the conduct.
By program year
10 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $5,778 | 32 | |
| 2025 | Research | $39 | 1 | |
| 2024 | General | $9,623 | 12 | |
| 2023 | General | $136 | 4 | |
| 2023 | Research | $433 | 2 | |
| 2022 | General | $247 | 9 | |
| 2022 | Research | $2,720 | 1 | |
| 2021 | General | $1,756 | 4 | |
| 2020 | General | $2,779 | 6 | |
| 2019 | General | $2,191 | 22 |
Beside peers
- Kumaraswamy Sivakumar
- Neuromuscular Medicine median
- Middle half of Neuromuscular Medicine
- National median
In program year 2025, general payments to Kumaraswamy Sivakumar were reported at $5,778. Among 188 Neuromuscular Medicine profiles paid that year, the median was $530 and the middle half received between $134 and $6,440.
Show as a table
| Year | Kumaraswamy Sivakumar | Neuromuscular Medicine median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $2,191 | $356 | $114–$4,219 | $163 |
| 2020 | $2,779 | $287 | $72–$5,632 | $114 |
| 2021 | $1,756 | $193 | $73–$1,841 | $132 |
| 2022 | $247 | $362 | $109–$2,461 | $149 |
| 2023 | $136 | $411 | $119–$3,356 | $160 |
| 2024 | $9,623 | $394 | $122–$5,116 | $164 |
| 2025 | $5,778 | $530 | $134–$6,440 | $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 · 39 drugsPart D claims
2,327
Drug cost
$3,393,695
Branded share of claims
23.3%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Gammaked Immune Globul G/Gly/Iga Avg 46 | Brand | 47 | $1,054,159 | |
| Gammagard Liquid Immun Glob G(Igg)/Gly/Iga Ov50 | Brand | 67 | $832,555 | |
| Radicava Ors Edaravone | Brand | 54 | $736,600 | |
| Octagam Immun Globg(Igg)/Malt/Iga Ov50 | Brand | 32 | $641,368 | |
| Nuedexta Dextromethorphan Hbr/Quinidine | Brand | 11 | $19,871 | |
| Cyclosporine | Generic | 19 | $17,579 | |
| Pyridostigmine Bromide Er Pyridostigmine Bromide | Brand | 23 | $14,511 | |
| Cyclosporine Modified Cyclosporine, Modified | Brand | 93 | $14,108 | |
| Azathioprine | Generic | 148 | $12,344 | |
| Pyridostigmine Bromide | Generic | 146 | $11,139 |
The 10 drugs with the highest cost, of 39 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 13,695 Part D prescribers listed as Neurology; they describe a distribution and say nothing about conduct.
Billing to Medicare
Part B · data year 2024 · 34 billing codesPaid by Medicare
$5,113,180
Medicare patients
350
Services billed
98,574
| Condition among their Medicare patients | Relative to the most common | Share of patients |
|---|---|---|
| High blood pressure | 72% | |
| Arthritis | 64% | |
| Ischemic heart disease | 37% | |
| Diabetes | 28% | |
| Chronic kidney disease | 22% | |
| Osteoporosis | 22% | |
| Cancer | 21% | |
| Depression | 21% |
| Drug given in the clinic | Where | Patients | Services | Paid by Medicare |
|---|---|---|---|---|
| Injection, immune globulin (panzyga), intravenous, non-lyophilized (e.g., liquid), 500 mg J1576 | Office | 30 | 48,440 | $2,546,689 |
| Injection, methylprednisolone sodium succinate, 5 mg J2919 | Office | 19 | 2,080 | $481 |
| Infusion, normal saline solution, 250 cc J7050 | Office | 21 | 163 | $83 |
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 9 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 |
|---|---|---|---|---|
| POMBILITI |
|
$3,513 | — | — |
| OPFOLDA |
|
$3,513 | — | — |
| VYVGART |
|
$1,975 | — | — |
| ULTOMIRIS |
|
$114 | — | — |
| VYVGART Hytrulo |
|
$99 | — | — |
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 all 9 in the dashboard with a free accountRecords
93 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 Neuromuscular Medicine in Arizona
Related records
Neuromuscular Medicine in Arizona
Practitioners in the same specialty and state, ranked by reported value.
All Neuromuscular Medicine
Everyone recorded under this specialty, nationwide.
Doctors in Arizona
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.