IndustryPayments
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

ARASH MAHAJERIN

Allopathic & Osteopathic Physicians Pediatrics Pediatric Hematology-Oncology

NPI
1033315247
CMS profile
620414
Location
ORANGE, CA

General Payments · PY2018–2023

$291,022.13

  • Reported across 450 records
  • CMS publication 2026-01-23

Latest program year · PY2023

$61,044.53

72 records · 0 disputed

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

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. 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.
  • Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

Related groups: Pediatric Hematology-Oncology CA All categories

By nature of payment

PY2023 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $34,454.00 8
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $18,960.00 4
Travel and Lodging $4,683.11 17
Food and Beverage $2,947.42 43

By paying entity

PY2023 · sorted by reported total

Paying entityAmountRecords
Alexion Pharmaceuticals, Inc. $23,496.37 28
Spark Therapeutics, Inc. $18,317.73 20
Genentech USA, Inc. $9,447.09 6
Kedrion Biopharma, Inc. $6,000.00 2
GENZYME CORPORATION $2,683.40 4
Genentech, Inc. $262.02 5
TerSera Therapeutics LLC $257.00 1
Grifols Shared Services North America, Inc. $222.26 2
Amneal Pharmaceuticals LLC $204.00 1
Apellis Pharmaceuticals, Inc. $74.40 1
Grifols USA, LLC $62.05 1
CHIESI USA, INC. $18.21 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $42,195.67 98
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

Payment records · PY2023 (72)

Sorted by paying entity, then date · as published by CMS

Program year 2023 20182019202020212022 Record-level detail is published for PY2023; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Alexion Pharmaceuticals, Inc. $69.53 01/13/2023 Food and Beverage Undisputed 01/23/2026 1017041751 CMS
Alexion Pharmaceuticals, Inc. $124.86 01/18/2023 Food and Beverage Undisputed 01/23/2026 1017007623 CMS
Alexion Pharmaceuticals, Inc. $75.57 03/29/2023 Food and Beverage Undisputed 01/23/2026 1016998049 CMS
Alexion Pharmaceuticals, Inc. $456.98 04/13/2023 Travel and Lodging Undisputed 01/23/2026 1016998185 CMS
Alexion Pharmaceuticals, Inc. $134.20 04/13/2023 Food and Beverage Undisputed 01/23/2026 1017007999 CMS
Alexion Pharmaceuticals, Inc. $290.41 04/13/2023 Travel and Lodging Undisputed 01/23/2026 1017094727 CMS
Alexion Pharmaceuticals, Inc. $35.00 04/14/2023 Food and Beverage Undisputed 01/23/2026 1017000657 CMS
Alexion Pharmaceuticals, Inc. $456.96 04/14/2023 Travel and Lodging Undisputed 01/23/2026 1017002437 CMS
Alexion Pharmaceuticals, Inc. $456.96 04/14/2023 Travel and Lodging Undisputed 01/23/2026 1017028563 CMS
Alexion Pharmaceuticals, Inc. $100.00 04/14/2023 Food and Beverage Undisputed 01/23/2026 1017064877 CMS
Alexion Pharmaceuticals, Inc. $9,920.00 04/27/2023 Consulting Fee Undisputed 01/23/2026 1017004115 CMS
Alexion Pharmaceuticals, Inc. $605.80 05/04/2023 Travel and Lodging Undisputed 01/23/2026 1017010133 CMS
Alexion Pharmaceuticals, Inc. $43.44 05/11/2023 Food and Beverage Undisputed 01/23/2026 1016978373 CMS
Alexion Pharmaceuticals, Inc. $119.88 05/11/2023 Travel and Lodging Undisputed 01/23/2026 1017051743 CMS
Alexion Pharmaceuticals, Inc. $22.86 05/11/2023 Food and Beverage Undisputed 01/23/2026 1017060395 CMS
Alexion Pharmaceuticals, Inc. $1,860.00 05/11/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1017066073 CMS
Alexion Pharmaceuticals, Inc. $25.47 05/11/2023 Food and Beverage Undisputed 01/23/2026 1017074431 CMS
Alexion Pharmaceuticals, Inc. $54.83 07/12/2023 Food and Beverage Undisputed 01/23/2026 1017048855 CMS
Alexion Pharmaceuticals, Inc. $43.43 07/24/2023 Food and Beverage Undisputed 01/23/2026 1017082665 CMS
Alexion Pharmaceuticals, Inc. $297.51 08/10/2023 Travel and Lodging Undisputed 01/23/2026 1016995533 CMS
Alexion Pharmaceuticals, Inc. $149.50 08/10/2023 Food and Beverage Undisputed 01/23/2026 1017002243 CMS
Alexion Pharmaceuticals, Inc. $987.69 08/10/2023 Travel and Lodging Undisputed 01/23/2026 1017040027 CMS
Alexion Pharmaceuticals, Inc. $59.94 08/11/2023 Food and Beverage Undisputed 01/23/2026 1016982159 CMS
Alexion Pharmaceuticals, Inc. $49.83 08/11/2023 Food and Beverage Undisputed 01/23/2026 1017021639 CMS
Alexion Pharmaceuticals, Inc. $6,820.00 08/29/2023 Consulting Fee Undisputed 01/23/2026 1017019167 CMS
Alexion Pharmaceuticals, Inc. $22.12 08/31/2023 Food and Beverage Undisputed 01/23/2026 1017001487 CMS
Alexion Pharmaceuticals, Inc. $78.60 09/12/2023 Food and Beverage Undisputed 01/23/2026 1017005617 CMS
Alexion Pharmaceuticals, Inc. $135.00 09/14/2023 Food and Beverage Undisputed 01/23/2026 1016986399 CMS
Amneal Pharmaceuticals LLC $204.00 04/24/2023 Consulting Fee Undisputed 01/23/2026 1053513603 CMS
Apellis Pharmaceuticals, Inc. $74.40 05/02/2023 Food and Beverage Undisputed 01/23/2026 1056349973 CMS
Chiesi USA, Inc. $18.21 02/28/2023 Food and Beverage Undisputed 01/23/2026 1050858457 CMS
Genentech USA, Inc. $120.04 03/11/2023 Food and Beverage Undisputed 01/23/2026 1040303539 CMS
Genentech USA, Inc. $77.26 03/11/2023 Food and Beverage Undisputed 01/23/2026 1040303551 CMS
Genentech USA, Inc. $123.36 07/09/2023 Food and Beverage Undisputed 01/23/2026 1040303547 CMS
Genentech USA, Inc. $8,950.00 08/10/2023 Consulting Fee Undisputed 01/23/2026 1040303535 CMS
Genentech USA, Inc. $65.46 08/10/2023 Food and Beverage Undisputed 01/23/2026 1040303559 CMS
Genentech USA, Inc. $110.97 08/10/2023 Travel and Lodging Undisputed 01/23/2026 1040303563 CMS
Genentech, Inc. $75.00 02/21/2023 Food and Beverage Undisputed 01/23/2026 1040303587 CMS
Genentech, Inc. $28.31 03/10/2023 Food and Beverage Undisputed 01/23/2026 1040303571 CMS
Genentech, Inc. $66.92 04/27/2023 Food and Beverage Undisputed 01/23/2026 1040303575 CMS
Genentech, Inc. $28.45 05/25/2023 Food and Beverage Undisputed 01/23/2026 1040303595 CMS
Genentech, Inc. $63.34 07/12/2023 Food and Beverage Undisputed 01/23/2026 1040303583 CMS
GENZYME CORPORATION $2,303.00 08/15/2023 Consulting Fee Undisputed 01/23/2026 1050116143 CMS
GENZYME CORPORATION $128.23 08/15/2023 Food and Beverage Undisputed 01/23/2026 1050116145 CMS
GENZYME CORPORATION $159.05 08/15/2023 Travel and Lodging Undisputed 01/23/2026 1050116149 CMS
GENZYME CORPORATION $93.12 09/07/2023 Food and Beverage Undisputed 01/23/2026 1050116119 CMS
Grifols Shared Services North America, Inc. $98.00 03/11/2023 Food and Beverage Undisputed 01/23/2026 1011763797 CMS
Grifols Shared Services North America, Inc. $124.26 06/27/2023 Food and Beverage Undisputed 01/23/2026 1011763809 CMS
Grifols USA, LLC $62.05 08/08/2023 Food and Beverage Undisputed 01/23/2026 1011763803 CMS
Kedrion Biopharma, Inc. $3,000.00 03/10/2023 Consulting Fee Undisputed 01/23/2026 1044864469 CMS
Kedrion Biopharma, Inc. $3,000.00 04/02/2023 Consulting Fee Undisputed 01/23/2026 1044864487 CMS
Spark Therapeutics, Inc. $124.85 02/28/2023 Food and Beverage Undisputed 01/23/2026 1025252519 CMS
Spark Therapeutics, Inc. $6,840.00 03/03/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1025252523 CMS
Spark Therapeutics, Inc. $26.64 03/03/2023 Food and Beverage Undisputed 01/23/2026 1025252525 CMS
Spark Therapeutics, Inc. $22.70 03/03/2023 Food and Beverage Undisputed 01/23/2026 1025252529 CMS
Spark Therapeutics, Inc. $27.45 03/03/2023 Travel and Lodging Undisputed 01/23/2026 1025252531 CMS
Spark Therapeutics, Inc. $27.42 03/03/2023 Travel and Lodging Undisputed 01/23/2026 1025252535 CMS
Spark Therapeutics, Inc. $408.80 03/03/2023 Travel and Lodging Undisputed 01/23/2026 1025252537 CMS
Spark Therapeutics, Inc. $75.00 03/03/2023 Travel and Lodging Undisputed 01/23/2026 1025252541 CMS
Spark Therapeutics, Inc. $55.53 03/09/2023 Food and Beverage Undisputed 01/23/2026 1025252543 CMS
Spark Therapeutics, Inc. $5,700.00 03/24/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1025252547 CMS
Spark Therapeutics, Inc. $16.50 03/24/2023 Food and Beverage Undisputed 01/23/2026 1025252549 CMS
Spark Therapeutics, Inc. $11.90 03/24/2023 Food and Beverage Undisputed 01/23/2026 1025252553 CMS
Spark Therapeutics, Inc. $19.96 03/24/2023 Food and Beverage Undisputed 01/23/2026 1025252555 CMS
Spark Therapeutics, Inc. $31.13 03/24/2023 Travel and Lodging Undisputed 01/23/2026 1025252559 CMS
Spark Therapeutics, Inc. $109.98 03/24/2023 Travel and Lodging Undisputed 01/23/2026 1025252561 CMS
Spark Therapeutics, Inc. $124.97 08/14/2023 Food and Beverage Undisputed 01/23/2026 1025252565 CMS
Spark Therapeutics, Inc. $4,560.00 09/08/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1025252567 CMS
Spark Therapeutics, Inc. $61.12 09/08/2023 Travel and Lodging Undisputed 01/23/2026 1025252571 CMS
Spark Therapeutics, Inc. $25.15 09/08/2023 Food and Beverage Undisputed 01/23/2026 1025252573 CMS
Spark Therapeutics, Inc. $48.63 09/08/2023 Food and Beverage Undisputed 01/23/2026 1025252577 CMS
TerSera Therapeutics LLC $257.00 08/30/2023 Consulting Fee Undisputed 01/23/2026 1052413679 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-01-23
Program years on this page
2018, 2019, 2020, 2021, 2022, 2023
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023
Generated from
OP_DTL_GNRL_PGYR2023_P01232026_01102026.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.