Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

CHARLES A WALKER

Allopathic & Osteopathic Physicians Anesthesiology Pain Medicine

NPI
1144360785
CMS profile
97478
Location
PARIS, TN

General Payments · PY2018–2024

$908.43

  • Reported across 64 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$303.57

19 records · 0 disputed

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

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. 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.
  • Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $303.57 19

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $276.07 24
PY2019 $154.95 10
PY2020 $46.71 3
PY2021 $76.23 5
PY2023 $50.90 3
PY2024 $303.57 19

Payment records · PY2024 (19)

Sorted by paying entity, then date · as published by CMS

Program year 2024 20182019202020212023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Alnylam Pharmaceuticals Inc. $20.27 02/20/2024 Food and Beverage Undisputed 01/23/2026 1125857328 CMS
Alnylam Pharmaceuticals Inc. $19.05 04/24/2024 Food and Beverage Undisputed 01/23/2026 1125857352 CMS
Averitas Pharma Inc. $15.30 04/05/2024 Food and Beverage Undisputed 01/23/2026 1133450291 CMS
Boston Scientific Corporation $27.60 03/19/2024 Food and Beverage Undisputed 01/23/2026 1092474871 CMS
Boston Scientific Corporation $16.67 09/19/2024 Food and Beverage Undisputed 01/23/2026 1092474869 CMS
Collegium Pharmaceutical, Inc. $12.00 01/11/2024 Food and Beverage Undisputed 01/23/2026 1135205332 CMS
Collegium Pharmaceutical, Inc. $10.00 02/15/2024 Food and Beverage Undisputed 01/23/2026 1135219206 CMS
Collegium Pharmaceutical, Inc. $8.60 02/29/2024 Food and Beverage Undisputed 01/23/2026 1135225348 CMS
Collegium Pharmaceutical, Inc. $8.00 03/14/2024 Food and Beverage Undisputed 01/23/2026 1135228488 CMS
Collegium Pharmaceutical, Inc. $23.42 04/04/2024 Food and Beverage Undisputed 01/23/2026 1135236703 CMS
Collegium Pharmaceutical, Inc. $14.30 04/11/2024 Food and Beverage Undisputed 01/23/2026 1135240007 CMS
Collegium Pharmaceutical, Inc. $11.40 04/23/2024 Food and Beverage Undisputed 01/23/2026 1135244513 CMS
Collegium Pharmaceutical, Inc. $7.20 05/09/2024 Food and Beverage Undisputed 01/23/2026 1135252117 CMS
Collegium Pharmaceutical, Inc. $18.61 05/21/2024 Food and Beverage Undisputed 01/23/2026 1135256514 CMS
Collegium Pharmaceutical, Inc. $11.60 06/27/2024 Food and Beverage Undisputed 01/23/2026 1135271073 CMS
Collegium Pharmaceutical, Inc. $7.67 07/25/2024 Food and Beverage Undisputed 01/23/2026 1135345707 CMS
Collegium Pharmaceutical, Inc. $18.89 09/19/2024 Food and Beverage Undisputed 01/23/2026 1135301929 CMS
PROTEGA PHARMACEUTIALS INC $39.44 01/02/2024 Food and Beverage Undisputed 01/23/2026 1147553582 CMS
SCILEX PHARMACEUTICALS INC. $13.55 02/08/2024 Food and Beverage Undisputed 01/23/2026 1136223512 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-01-23
Program years on this page
2018, 2019, 2020, 2021, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.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.