Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

WILLIAM W BUSSE

Allopathic & Osteopathic Physicians Internal Medicine Allergy & Immunology

NPI
1881661486
CMS profile
1128649
Location
MADISON, WI

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2021 · Entire year

$158,718.20

85 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

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

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. 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.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2021 · entire year · sorted by reported total

By paying entity

PY2021 · entire year · sorted by reported total

Payment records · PY2021

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

85 matching records · $158,718.20 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 85 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 85.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Regeneron Healthcare Solutions, Inc. $841.5012/07/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563089 CMS
Regeneron Healthcare Solutions, Inc. $1,403.0011/26/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563087 CMS
SANOFI-AVENTIS U.S. LLC $29.0011/17/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529455 CMS
GENZYME CORPORATION $1,964.0011/11/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529487 CMS
GENZYME CORPORATION $344.8711/11/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529489 CMS
GENZYME CORPORATION $66.8911/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529491 CMS
GENZYME CORPORATION $5,891.0011/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529493 CMS
GENZYME CORPORATION $344.8811/10/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529495 CMS
GENZYME CORPORATION $18.0011/10/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529497 CMS
GENZYME CORPORATION $500.0011/04/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026860884213 CMS
Regeneron Healthcare Solutions, Inc. $1,403.0011/02/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563085 CMS
Regeneron Healthcare Solutions, Inc. $1,403.0010/26/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563083 CMS
GENZYME CORPORATION $1,964.0010/21/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529477 CMS
GENZYME CORPORATION $500.0010/20/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026860884217 CMS
GENZYME CORPORATION $5,049.0010/19/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529499 CMS
GENZYME CORPORATION $4.5010/19/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529501 CMS
GENZYME CORPORATION $510.0010/19/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529503 CMS
GENZYME CORPORATION $297.5010/12/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529463 CMS
GENZYME CORPORATION $550.9210/12/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529465 CMS
GENZYME CORPORATION $20.0010/12/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529467 CMS
GENZYME CORPORATION $122.3410/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529479 CMS
GENZYME CORPORATION $5,891.0010/12/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529481 CMS
GENZYME CORPORATION $752.0210/12/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529483 CMS
GENZYME CORPORATION $1,964.0010/12/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529485 CMS
GENZYME CORPORATION $6,372.0010/07/2021 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529457 CMS
GENZYME CORPORATION $114.2710/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529461 CMS
GENZYME CORPORATION $5,891.0010/01/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529469 CMS
GENZYME CORPORATION $462.4010/01/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529471 CMS
GENZYME CORPORATION $167.5010/01/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529473 CMS
GENZYME CORPORATION $30.0010/01/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529475 CMS
GlaxoSmithKline, LLC. $4,550.0009/28/2021 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802140395 CMS
GENZYME CORPORATION $250.0009/26/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026860884219 CMS
GENZYME CORPORATION $1,964.0009/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529451 CMS
Regeneron Healthcare Solutions, Inc. $27.0008/26/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563079 CMS
Regeneron Healthcare Solutions, Inc. $343.4508/26/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563081 CMS
Regeneron Healthcare Solutions, Inc. $5,891.0008/12/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563077 CMS
GENZYME CORPORATION $121.9208/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529427 CMS
GENZYME CORPORATION $5,891.0008/05/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529429 CMS
GENZYME CORPORATION $821.8108/05/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529431 CMS
GENZYME CORPORATION $389.9508/05/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529433 CMS
GENZYME CORPORATION $12.0008/05/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529435 CMS
GENZYME CORPORATION $151.6208/05/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529443 CMS
Regeneron Healthcare Solutions, Inc. $135.7507/31/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563075 CMS
Regeneron Healthcare Solutions, Inc. $92.8907/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563071 CMS
Regeneron Healthcare Solutions, Inc. $141.7507/30/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563073 CMS
GENZYME CORPORATION $1,750.0007/29/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529437 CMS
Regeneron Healthcare Solutions, Inc. $112.4207/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809563069 CMS
GENZYME CORPORATION $1,964.0007/23/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529421 CMS
GENZYME CORPORATION $2,244.0007/23/2021 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529459 CMS
GENZYME CORPORATION $5,891.0007/22/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843529403 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $289,846.51 183
PY2020 $133,335.42 53
PY2021 $158,718.20 85
PY2022 $84,795.62 36
PY2023 $116,107.13 70
PY2024 $98,645.12 57
PY2025 $46,737.83 33

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.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.

Cite this record.

Plain
WILLIAM W BUSSE, NPI 1881661486. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1881661486.
APA 7
IndustryPayments. (2026). WILLIAM W BUSSE, NPI 1881661486 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1881661486
Bluebook
WILLIAM W BUSSE, NPI 1881661486, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1881661486.

Source: Centers for Medicare & Medicaid Services, Open Payments.