Who Paid My Doc
Arash Mahajerin
Pediatric Hematology-Oncology Orange, CA Medical Doctor
NPI 1033315247 CMS profile 620414
101 The City Dr S Bldg 23, Orange, CA 92868
General payments
$248,936
Research payments
$13,603
Ownership & investment interest
$0
Research they led as principal investigator
$14,376
Through program year 2025, Arash Mahajerin of Orange, CA is reported in the CMS Open Payments database as having received $248,936 across 353 general payments and $13,603 in research payments paid to them. Separately, studies naming them as principal investigator received $14,376 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 97th percentile of Pediatric Hematology-Oncology profiles with reported payments. Percentile describes the distribution, not the conduct.
By program year
9 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $109 | 1 | |
| 2023 | General | $61,045 | 72 | |
| 2022 | General | $35,722 | 55 | |
| 2022 | Research | $6,582 | 1 | |
| 2021 | General | $31,567 | 36 | |
| 2021 | Research | $550 | 1 | |
| 2020 | General | $21,192 | 27 | |
| 2020 | Research | $6,471 | 7 | |
| 2019 | General | $99,301 | 162 |
Beside peers
- Arash Mahajerin
- Pediatric Hematology-Oncology median
- Middle half of Pediatric Hematology-Oncology
- National median
In program year 2025, general payments to Arash Mahajerin were reported at $109. Among 1,352 Pediatric Hematology-Oncology profiles paid that year, the median was $204 and the middle half received between $80 and $2,819.
Show as a table
| Year | Arash Mahajerin | Pediatric Hematology-Oncology median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $99,301 | $184 | $69–$2,094 | $163 |
| 2020 | $21,192 | $220 | $37–$3,941 | $114 |
| 2021 | $31,567 | $366 | $63–$4,909 | $132 |
| 2022 | $35,722 | $181 | $66–$2,775 | $149 |
| 2023 | $61,045 | $175 | $62–$2,600 | $160 |
| 2024 | $0 | $227 | $66–$2,992 | $164 |
| 2025 | $109 | $204 | $80–$2,819 | $169 |
Breakdown
A payment can name more than one product, so these amounts overlap and do not add up to the general-payment figure.
Records
362 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 Pediatric Hematology-Oncology in California
Philip Pizzo
Pediatric Hematology-Oncology · Palo Alto, CA
Vinod Balasa
Pediatric Hematology-Oncology · Madera, CA
Akshat Jain
Pediatric Hematology-Oncology · Redlands, CA
Noah Federman
Pediatric Hematology-Oncology · Los Angeles, CA
Vanessa Salinas-Luna
Pediatric Hematology-Oncology · Orange, CA
Daniel Kraft
Pediatric Hematology-Oncology · Stanford, CA
Related records
Pediatric Hematology-Oncology in California
Practitioners in the same specialty and state, ranked by reported value.
All Pediatric Hematology-Oncology
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.