Physician profile

Xiao C Wan

Allergy & Immunology · Menlo Park, CA

NPI 1295099042

$1,130.44

in general payments reported to CMS, 2019-2025

11 companies · $46.41 in 2025

The $46.41 reported for 2025 was less than what a typical Allergy & Immunology provider received nationally (typical 2025 total: $1,138).

See the full distribution for Allergy & Immunology

Payments by year

General payments by program year, as reported to CMS.

What the payments were for

Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.

View as a table
Payment typeAmount (2023-2025)
Food and Beverage$366.54
Education$30.54

Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.

Who reported paying

General payments only, as reported to CMS. Product names cover 2023-2025.

CompanyGeneral paymentsYearsTop products
Glaxosmithkline, LLC. $227.59 2020-2022
Astrazeneca Pharmaceuticals LP $207.25 2020-2024 Tezspire
Genzyme Corporation $204.58 2019-2024
Alk-Abello, INC $199.99 2019-2020
Zoll Services LLC (A/K/A Zoll Lifecor Corp) $122.54 2024 Lifevest
Novartis Pharmaceuticals Corporation $46.41 2025
Pfizer INC. $43.75 2023
Csl Behring $25.00 2019
Takeda Pharmaceuticals U.S.A., INC. $24.95 2024 Cuvitru
Regeneron Healthcare Solutions, INC. $15.41 2019
Horizon Therapeutics Plc $12.97 2021

Drugs and devices associated with these payments

CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.

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Payment summary

Xiao C Wan

$1,130.44

in general payments reported 2019-2025

Years
2019-2025
Top company
Glaxosmithkline, LLC.
Context
The $46.41 reported for 2025 was less than what a typical Allergy & Immunology provider received nationally (typical 2025 total: $1,138).

https://glasscript.com/doctor/457817/xiao-c-wan

Source: CMS Open Payments, program years 2019-2025. Payments are legal and often routine.

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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.