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

MICHAEL ROSS MANGUM

Allopathic & Osteopathic Physicians Pediatrics Pediatric Hematology-Oncology

NPI
1891112108
CMS profile
417252
Location
PHOENIX, AZ

General Payments · PY2021–2024

$43,189.40

  • Reported across 46 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$23,988.21

30 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.

By nature of payment

PY2024 · sorted by reported total

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Alexion Pharmaceuticals, Inc. $23,988.21 30

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $2,740.00 1
PY2022 $2,099.36 2
PY2023 $14,361.83 13
PY2024 $23,988.21 30

Payment records · PY2024 (30)

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

Program year 2024 202120222023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Alexion Pharmaceuticals, Inc. $34.99 01/12/2024 Food and Beverage Undisputed 01/23/2026 1093889092 CMS
Alexion Pharmaceuticals, Inc. $14.99 01/12/2024 Food and Beverage Undisputed 01/23/2026 1093920831 CMS
Alexion Pharmaceuticals, Inc. $49.99 01/12/2024 Food and Beverage Undisputed 01/23/2026 1093924094 CMS
Alexion Pharmaceuticals, Inc. $33.17 01/12/2024 Food and Beverage Undisputed 01/23/2026 1093936444 CMS
Alexion Pharmaceuticals, Inc. $14.99 01/12/2024 Food and Beverage Undisputed 01/23/2026 1094006488 CMS
Alexion Pharmaceuticals, Inc. $315.27 01/12/2024 Travel and Lodging Undisputed 01/23/2026 1094044916 CMS
Alexion Pharmaceuticals, Inc. $22.03 01/24/2024 Food and Beverage Undisputed 01/23/2026 1093882687 CMS
Alexion Pharmaceuticals, Inc. $15.95 01/24/2024 Travel and Lodging Undisputed 01/23/2026 1093897175 CMS
Alexion Pharmaceuticals, Inc. $12.50 01/24/2024 Food and Beverage Undisputed 01/23/2026 1093905953 CMS
Alexion Pharmaceuticals, Inc. $8,060.00 01/24/2024 Consulting Fee Undisputed 01/23/2026 1094041610 CMS
Alexion Pharmaceuticals, Inc. $21.43 01/24/2024 Travel and Lodging Undisputed 01/23/2026 1094042011 CMS
Alexion Pharmaceuticals, Inc. $1,860.00 02/08/2024 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 1093898175 CMS
Alexion Pharmaceuticals, Inc. $1,240.00 02/20/2024 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 1093931521 CMS
Alexion Pharmaceuticals, Inc. $169.98 03/27/2024 Travel and Lodging Undisputed 01/23/2026 1093909800 CMS
Alexion Pharmaceuticals, Inc. $20.82 03/27/2024 Food and Beverage Undisputed 01/23/2026 1093996338 CMS
Alexion Pharmaceuticals, Inc. $17.97 03/27/2024 Travel and Lodging Undisputed 01/23/2026 1094003400 CMS
Alexion Pharmaceuticals, Inc. $187.88 03/27/2024 Travel and Lodging Undisputed 01/23/2026 1094023627 CMS
Alexion Pharmaceuticals, Inc. $19.97 03/28/2024 Travel and Lodging Undisputed 01/23/2026 1093890638 CMS
Alexion Pharmaceuticals, Inc. $1,143.20 03/28/2024 Travel and Lodging Undisputed 01/23/2026 1093898794 CMS
Alexion Pharmaceuticals, Inc. $329.98 03/28/2024 Travel and Lodging Undisputed 01/23/2026 1093911216 CMS
Alexion Pharmaceuticals, Inc. $21.98 03/28/2024 Travel and Lodging Undisputed 01/23/2026 1093918402 CMS
Alexion Pharmaceuticals, Inc. $21.93 03/28/2024 Travel and Lodging Undisputed 01/23/2026 1093986252 CMS
Alexion Pharmaceuticals, Inc. $24.12 03/28/2024 Food and Beverage Undisputed 01/23/2026 1094005925 CMS
Alexion Pharmaceuticals, Inc. $4,960.00 03/28/2024 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 1094012801 CMS
Alexion Pharmaceuticals, Inc. $121.36 04/18/2024 Food and Beverage Undisputed 01/23/2026 1093885801 CMS
Alexion Pharmaceuticals, Inc. $253.22 04/18/2024 Travel and Lodging Undisputed 01/23/2026 1093914749 CMS
Alexion Pharmaceuticals, Inc. $6.57 04/18/2024 Travel and Lodging Undisputed 01/23/2026 1093919323 CMS
Alexion Pharmaceuticals, Inc. $4,960.00 04/18/2024 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 1093976911 CMS
Alexion Pharmaceuticals, Inc. $17.99 04/18/2024 Travel and Lodging Undisputed 01/23/2026 1093987870 CMS
Alexion Pharmaceuticals, Inc. $15.93 04/19/2024 Travel and Lodging Undisputed 01/23/2026 1093897860 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
2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_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.