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 M KLEIN

Allopathic & Osteopathic Physicians Internal Medicine

NPI
1659359578
CMS profile
301423
Location
GREAT NECK, NY

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.

Saved items

Saved only in this browser. No account or alerts.

Filter and download payment records

General Payments · PY2021 · Entire year

$1,795.93

97 records · 0 disputed

Summary and payment records

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

“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

Nature of paymentAmountRecords
Food and Beverage $1,795.93 97

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

97 matching records · $1,795.93 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 97 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 97.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Acerus Pharmaceuticals Corporation $18.8112/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026777480395 CMS
Genentech USA, Inc. $20.4712/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835991071 CMS
Regeneron Healthcare Solutions, Inc. $26.9812/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809594917 CMS
Amarin Pharma Inc. $17.9311/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026815433657 CMS
Merck Sharp & Dohme Corporation $13.5711/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848559595 CMS
ARBOR PHARMACEUTICALS, INC. $22.3810/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830960933 CMS
Genentech USA, Inc. $13.1510/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835991069 CMS
Novo Nordisk Inc $22.2210/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026810641285 CMS
Janssen Pharmaceuticals, Inc $20.4010/18/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788529555 CMS
GlaxoSmithKline, LLC. $19.0910/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802994019 CMS
Novartis Pharmaceuticals Corporation $19.0410/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026812753975 CMS
Gilead Sciences, Inc. $19.3410/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848222535 CMS
Amgen Inc. $23.1910/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026825874121 CMS
AstraZeneca Pharmaceuticals LP $15.9009/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830078153 CMS
AbbVie Inc. $4.5609/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026795121045 CMS
AbbVie Inc. $20.0009/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026795121041 CMS
Amgen Inc. $18.9409/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026826457043 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $26.0309/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763723946 CMS
GlaxoSmithKline, LLC. $22.0009/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026803147689 CMS
ARBOR PHARMACEUTICALS, INC. $20.1209/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830960923 CMS
Currax Pharmaceuticals LLC $14.4409/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026792532037 CMS
Horizon Therapeutics plc $21.1008/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026797159483 CMS
Lilly USA, LLC $16.8408/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026818816097 CMS
AstraZeneca Pharmaceuticals LP $13.1508/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829848081 CMS
Novo Nordisk Inc $21.6208/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026811446641 CMS
GlaxoSmithKline, LLC. $18.4508/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802876359 CMS
Amarin Pharma Inc. $20.8308/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026815433659 CMS
AbbVie Inc. $9.1007/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026795121037 CMS
PFIZER INC. $1.1207/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833442559 CMS
PFIZER INC. $23.1107/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833489475 CMS
Novo Nordisk Inc $7.9207/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026811692697 CMS
Janssen Pharmaceuticals, Inc $19.4207/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788529553 CMS
Advanced Respiratory, Inc $31.8907/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026853544273 CMS
PFIZER INC. $15.9507/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833440563 CMS
PFIZER INC. $2.0307/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833465355 CMS
Horizon Therapeutics plc $18.1007/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026797159481 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $23.3807/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763723948 CMS
PFIZER INC. $19.2007/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833389015 CMS
VIVUS LLC $16.8007/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026814345013 CMS
AbbVie Inc. $10.8706/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026795121033 CMS
AstraZeneca Pharmaceuticals LP $16.2006/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829912605 CMS
Amgen Inc. $26.4506/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026826457039 CMS
GlaxoSmithKline, LLC. $17.8806/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802147139 CMS
Novo Nordisk Inc $15.8306/23/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026810773155 CMS
Amgen Inc. $16.7106/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026825874117 CMS
Takeda Pharmaceuticals U.S.A., Inc. $14.8406/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820022243 CMS
AbbVie Inc. $28.6206/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026795121029 CMS
Amarin Pharma Inc. $22.3706/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026815433655 CMS
Janssen Pharmaceuticals, Inc $15.7006/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788529557 CMS
E.R. Squibb & Sons, L.L.C. $13.1706/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026783415761 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $2,203.15 119
PY2020 $1,588.01 88
PY2021 $1,795.93 97
PY2022 $1,472.99 85
PY2023 $1,648.46 82
PY2024 $1,663.33 84
PY2025 $1,781.71 82

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 M KLEIN, NPI 1659359578. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1659359578.
APA 7
IndustryPayments. (2026). WILLIAM M KLEIN, NPI 1659359578 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1659359578
Bluebook
WILLIAM M KLEIN, NPI 1659359578, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1659359578.

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