Physician profile

Michael John Main

Allergy & Immunology (Internal Medicine) · San Francisco, CA

NPI 1649833005

$878.85

in general payments reported to CMS, 2019-2025

11 companies · $674 in 2025

The $674 reported for 2025 was less than what a typical Allergy & Immunology (Internal Medicine) provider received nationally (typical 2025 total: $681).

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$878.85

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
Astrazeneca Pharmaceuticals LP $288.66 2024-2025 Fasenra, Breztri, Airsupra
Glaxosmithkline, LLC. $142.97 2025 Nucala, Trelegy Ellipta
Takeda Pharmaceuticals U.S.A., INC. $102.62 2024-2025 Cuvitru, Hyqvia
Amgen INC. $81.42 2024-2025 Tezspire, Actimmune
Regeneron Healthcare Solutions, INC. $68.34 2025 Dupixent
Novartis Pharmaceuticals Corporation $39.42 2025
Grifols USA, LLC $34.49 2024 Xembify
Octapharma USA, INC. $33.36 2025 Cutaquig
Genzyme Corporation $31.72 2024
Hospira, INC. $29.74 2025
Arcutis Biotherapeutics, INC. $26.11 2025 Zoryve

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.

If you want to bring it up

Most clinicians are glad to talk about this. A respectful way in:

These are normal questions. A good clinician will welcome them.

Share this page

Payment summary

Michael John Main

$878.85

in general payments reported 2019-2025

Years
2024-2025
Top company
Astrazeneca Pharmaceuticals LP
Context
The $674 reported for 2025 was less than what a typical Allergy & Immunology (Internal Medicine) provider received nationally (typical 2025 total: $681).

https://glasscript.com/doctor/11683589/michael-john-main

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

Keep an eye on this page

Get an email when the next June refresh changes this page. No account needed.

Watch this doctor

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.