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

KAREN CHAO

Allopathic & Osteopathic Physicians Pediatrics Pediatric Hematology-Oncology

NPI
1194187104
CMS profile
4217819
Location
PALO ALTO, CA

General Payments · PY2019–2024

$2,085.95

  • Reported across 17 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$1,985.95

16 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

Nature of paymentAmountRecords
Travel and Lodging $1,199.07 5
Food and Beverage $786.88 11

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Adaptive Biotechnologies Corporation $1,808.00 14
Y-mAbs Therapeutics, Inc. $118.13 1
Amgen Inc. $59.82 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $100.00 1
PY2024 $1,985.95 16

Payment records · PY2024 (16)

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

Program year 2024 2019 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
Adaptive Biotechnologies Corporation $101.89 10/10/2024 Food and Beverage Undisputed 01/23/2026 1150260316 CMS
Adaptive Biotechnologies Corporation $58.89 10/10/2024 Food and Beverage Undisputed 01/23/2026 1150260318 CMS
Adaptive Biotechnologies Corporation $46.66 10/10/2024 Food and Beverage Undisputed 01/23/2026 1150260320 CMS
Adaptive Biotechnologies Corporation $73.34 10/10/2024 Food and Beverage Undisputed 01/23/2026 1150260322 CMS
Adaptive Biotechnologies Corporation $68.76 10/10/2024 Food and Beverage Undisputed 01/23/2026 1150260324 CMS
Adaptive Biotechnologies Corporation $58.80 10/11/2024 Food and Beverage Undisputed 01/23/2026 1150260326 CMS
Adaptive Biotechnologies Corporation $45.00 10/11/2024 Food and Beverage Undisputed 01/23/2026 1150260328 CMS
Adaptive Biotechnologies Corporation $54.00 10/11/2024 Food and Beverage Undisputed 01/23/2026 1150260330 CMS
Adaptive Biotechnologies Corporation $101.59 12/04/2024 Food and Beverage Undisputed 01/23/2026 1150260332 CMS
Adaptive Biotechnologies Corporation $26.68 12/04/2024 Travel and Lodging Undisputed 01/23/2026 1150264001 CMS
Adaptive Biotechnologies Corporation $71.99 12/04/2024 Travel and Lodging Undisputed 01/23/2026 1150264003 CMS
Adaptive Biotechnologies Corporation $420.30 12/04/2024 Travel and Lodging Undisputed 01/23/2026 1150264005 CMS
Adaptive Biotechnologies Corporation $60.13 12/04/2024 Travel and Lodging Undisputed 01/23/2026 1150264007 CMS
Adaptive Biotechnologies Corporation $619.97 12/04/2024 Travel and Lodging Undisputed 01/23/2026 1150264009 CMS
Amgen Inc. $59.82 08/27/2024 Food and Beverage Undisputed 01/23/2026 1111546265 CMS
Y-mAbs Therapeutics, Inc. $118.13 07/17/2024 Food and Beverage Undisputed 01/23/2026 1142461901 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
2019, 2024
Source files
Dataset page · Bulk file · PY2019 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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