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 C MCLAIN

Allopathic & Osteopathic Physicians Internal Medicine Pulmonary Disease

NPI
1467426650
CMS profile
201917
Location
COLUMBIA, SC

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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Filter and download payment records

General Payments · PY2021 · Entire year

$1,071.02

41 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 $1,071.02 41

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

41 matching records · $1,071.02 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 41 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 1–41 of 41.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
HARMONY BIOSCIENCES LLC $16.4712/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026853077291 CMS
Fisher & Paykel Healthcare Inc $15.0012/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834468381 CMS
AstraZeneca Pharmaceuticals LP $96.5012/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829798399 CMS
Eisai Inc. $22.8811/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026818045383 CMS
ARBOR PHARMACEUTICALS, INC. $13.5311/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830922123 CMS
JAZZ PHARMACEUTICALS INC. $21.2911/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845562537 CMS
JAZZ PHARMACEUTICALS INC. $20.8410/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845564171 CMS
JAZZ PHARMACEUTICALS INC. $21.3910/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845558227 CMS
Vanda Pharmaceuticals Inc. $26.2410/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026838905975 CMS
JAZZ PHARMACEUTICALS INC. $20.5809/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845558225 CMS
Merck Sharp & Dohme Corporation $14.2109/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848548877 CMS
Philips Electronics North America Corporation $15.3309/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026853240383 CMS
JAZZ PHARMACEUTICALS INC. $125.0008/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845607717 CMS
JAZZ PHARMACEUTICALS INC. $24.6108/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845553719 CMS
Eisai Inc. $15.9308/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026817971859 CMS
ARBOR PHARMACEUTICALS, INC. $11.2507/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830922099 CMS
JAZZ PHARMACEUTICALS INC. $14.3907/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845591575 CMS
Eisai Inc. $17.1407/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026817954189 CMS
HARMONY BIOSCIENCES LLC $16.8406/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026853077289 CMS
Merck Sharp & Dohme Corporation $16.2506/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848457289 CMS
Fisher & Paykel Healthcare Inc $59.2705/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834468379 CMS
Supernus Pharmaceuticals, Inc. $19.7005/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845081197 CMS
Merck Sharp & Dohme Corporation $16.3505/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848327915 CMS
JAZZ PHARMACEUTICALS INC. $19.0005/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845582715 CMS
ARBOR PHARMACEUTICALS, INC. $12.9305/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830922091 CMS
Eisai Inc. $19.7205/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026817911103 CMS
JAZZ PHARMACEUTICALS INC. $18.1104/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845578687 CMS
Resmed Corp $16.2904/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026831645411 CMS
Merck Sharp & Dohme Corporation $15.9903/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848465495 CMS
JAZZ PHARMACEUTICALS INC. $20.5103/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845578689 CMS
Eisai Inc. $17.8703/04/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026817849051 CMS
JAZZ PHARMACEUTICALS INC. $23.5802/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845575155 CMS
ARBOR PHARMACEUTICALS, INC. $14.4502/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830922027 CMS
Inspire Medical Systems, Inc. $134.9702/04/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026842854679 CMS
JAZZ PHARMACEUTICALS INC. $17.2702/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845576235 CMS
JAZZ PHARMACEUTICALS INC. $3.7502/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845576233 CMS
ARBOR PHARMACEUTICALS, INC. $15.5601/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830922021 CMS
Eisai Inc. $19.3401/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026817806421 CMS
JAZZ PHARMACEUTICALS INC. $16.5201/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026845576237 CMS
Philips Electronics North America Corporation $15.3001/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026853240381 CMS
Vanda Pharmaceuticals Inc. $28.8701/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026838905973 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $478.74 22
PY2020 $381.05 21
PY2021 $1,071.02 41
PY2022 $429.44 20
PY2025 $661.04 3

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, 2025
Source files and profile matching
Source files
Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2025
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 C MCLAIN, NPI 1467426650. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1467426650.
APA 7
IndustryPayments. (2026). WILLIAM C MCLAIN, NPI 1467426650 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1467426650
Bluebook
WILLIAM C MCLAIN, NPI 1467426650, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1467426650.

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