Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

ARASH MAHAJERIN

Allopathic & Osteopathic Physicians Pediatrics Pediatric Hematology-Oncology

NPI
1033315247
CMS profile
620414
Location
ORANGE, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2023 · Entire year

$61,044.53

72 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2023 · entire year · sorted by reported total

By paying entity

PY2023 · entire year · sorted by reported total

Payment records · PY2023

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

72 matching records · $61,044.53 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 72 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 72.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Alexion Pharmaceuticals, Inc. $135.0009/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016986399 CMS
Alexion Pharmaceuticals, Inc. $78.6009/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017005617 CMS
Spark Therapeutics, Inc. $4,560.0009/08/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252567 CMS
Spark Therapeutics, Inc. $61.1209/08/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252571 CMS
Spark Therapeutics, Inc. $25.1509/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252573 CMS
Spark Therapeutics, Inc. $48.6309/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252577 CMS
GENZYME CORPORATION $93.1209/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050116119 CMS
Alexion Pharmaceuticals, Inc. $22.1208/31/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017001487 CMS
TerSera Therapeutics LLC $257.0008/30/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261052413679 CMS
Alexion Pharmaceuticals, Inc. $6,820.0008/29/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017019167 CMS
GENZYME CORPORATION $2,303.0008/15/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050116143 CMS
GENZYME CORPORATION $128.2308/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050116145 CMS
GENZYME CORPORATION $159.0508/15/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050116149 CMS
Spark Therapeutics, Inc. $124.9708/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252565 CMS
Alexion Pharmaceuticals, Inc. $59.9408/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016982159 CMS
Alexion Pharmaceuticals, Inc. $49.8308/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017021639 CMS
Alexion Pharmaceuticals, Inc. $297.5108/10/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016995533 CMS
Alexion Pharmaceuticals, Inc. $149.5008/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017002243 CMS
Alexion Pharmaceuticals, Inc. $987.6908/10/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017040027 CMS
Genentech USA, Inc. $8,950.0008/10/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303535 CMS
Genentech USA, Inc. $65.4608/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303559 CMS
Genentech USA, Inc. $110.9708/10/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303563 CMS
Grifols USA, LLC $62.0508/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011763803 CMS
Alexion Pharmaceuticals, Inc. $43.4307/24/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017082665 CMS
Alexion Pharmaceuticals, Inc. $54.8307/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017048855 CMS
Genentech, Inc. $63.3407/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303583 CMS
Genentech USA, Inc. $123.3607/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303547 CMS
Grifols Shared Services North America, Inc. $124.2606/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011763809 CMS
Genentech, Inc. $28.4505/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303595 CMS
Alexion Pharmaceuticals, Inc. $43.4405/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016978373 CMS
Alexion Pharmaceuticals, Inc. $119.8805/11/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017051743 CMS
Alexion Pharmaceuticals, Inc. $22.8605/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017060395 CMS
Alexion Pharmaceuticals, Inc. $1,860.0005/11/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017066073 CMS
Alexion Pharmaceuticals, Inc. $25.4705/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017074431 CMS
Alexion Pharmaceuticals, Inc. $605.8005/04/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017010133 CMS
Apellis Pharmaceuticals, Inc. $74.4005/02/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056349973 CMS
Alexion Pharmaceuticals, Inc. $9,920.0004/27/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017004115 CMS
Genentech, Inc. $66.9204/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040303575 CMS
Amneal Pharmaceuticals LLC $204.0004/24/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261053513603 CMS
Alexion Pharmaceuticals, Inc. $35.0004/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017000657 CMS
Alexion Pharmaceuticals, Inc. $456.9604/14/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017002437 CMS
Alexion Pharmaceuticals, Inc. $456.9604/14/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017028563 CMS
Alexion Pharmaceuticals, Inc. $100.0004/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017064877 CMS
Alexion Pharmaceuticals, Inc. $456.9804/13/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016998185 CMS
Alexion Pharmaceuticals, Inc. $134.2004/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017007999 CMS
Alexion Pharmaceuticals, Inc. $290.4104/13/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017094727 CMS
Kedrion Biopharma, Inc. $3,000.0004/02/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261044864487 CMS
Alexion Pharmaceuticals, Inc. $75.5703/29/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016998049 CMS
Spark Therapeutics, Inc. $5,700.0003/24/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252547 CMS
Spark Therapeutics, Inc. $16.5003/24/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261025252549 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $99,300.71 162
PY2020 $21,191.98 27
PY2021 $31,566.99 36
PY2022 $35,722.25 55
PY2023 $61,044.53 72
PY2025 $109.04 1

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2025
Source files and profile matching
Source files
Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2025
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.

Cite this record.

Plain
ARASH MAHAJERIN, NPI 1033315247. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1033315247.
APA 7
IndustryPayments. (2026). ARASH MAHAJERIN, NPI 1033315247 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1033315247
Bluebook
ARASH MAHAJERIN, NPI 1033315247, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1033315247.

Source: Centers for Medicare & Medicaid Services, Open Payments.