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

IAN CHURCHHILL ANDERSON

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1518055573
CMS profile
340505
Location
SANTA ROSA, CA

General Payments · PY2018–2024

$8,677.55

  • Reported across 354 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$604.16

22 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 $604.16 22

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $1,289.27 72
PY2019 $1,386.19 83
PY2020 $1,110.79 41
PY2021 $1,858.56 66
PY2022 $1,897.50 50
PY2023 $531.08 20
PY2024 $604.16 22

Payment records · PY2024 (22)

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

Program year 2024 201820192020202120222023 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
ABBVIE INC. $34.94 07/11/2024 Food and Beverage Undisputed 01/23/2026 1103223465 CMS
ABBVIE INC. $27.24 09/10/2024 Food and Beverage Undisputed 01/23/2026 1103223467 CMS
ARRAY BIOPHARMA INC $35.19 10/15/2024 Food and Beverage Undisputed 01/23/2026 1130873761 CMS
AstraZeneca Pharmaceuticals LP $27.69 11/08/2024 Food and Beverage Undisputed 01/23/2026 1110550676 CMS
Celgene Corporation $29.84 05/01/2024 Food and Beverage Undisputed 01/23/2026 1101137112 CMS
Daiichi Sankyo Inc. $14.30 07/23/2024 Food and Beverage Undisputed 01/23/2026 1089393710 CMS
Daiichi Sankyo Inc. $19.67 08/15/2024 Food and Beverage Undisputed 01/23/2026 1089393728 CMS
Genmab U.S., Inc. $22.73 09/27/2024 Food and Beverage Undisputed 01/23/2026 1126827248 CMS
Gilead Sciences, Inc. $14.11 02/28/2024 Food and Beverage Undisputed 01/23/2026 1133806699 CMS
GlaxoSmithKline, LLC. $23.35 01/23/2024 Food and Beverage Undisputed 01/23/2026 1116249420 CMS
Janssen Biotech, Inc. $36.13 12/04/2024 Food and Beverage Undisputed 01/23/2026 1078341020 CMS
Lilly USA, LLC $32.65 08/22/2024 Food and Beverage Undisputed 01/23/2026 1135030732 CMS
Lilly USA, LLC $31.61 10/17/2024 Food and Beverage Undisputed 01/23/2026 1135030734 CMS
Merck Sharp & Dohme LLC $32.17 12/17/2024 Food and Beverage Undisputed 01/23/2026 1141555294 CMS
Novartis Pharmaceuticals Corporation $30.45 05/15/2024 Food and Beverage Undisputed 01/23/2026 1086746429 CMS
PFIZER INC. $30.75 04/09/2024 Food and Beverage Undisputed 01/23/2026 1131296941 CMS
PFIZER INC. $16.71 04/24/2024 Food and Beverage Undisputed 01/23/2026 1131400217 CMS
PFIZER INC. $31.06 07/09/2024 Food and Beverage Undisputed 01/23/2026 1131353951 CMS
PFIZER INC. $6.67 09/20/2024 Food and Beverage Undisputed 01/23/2026 1131354318 CMS
SpringWorks Therapeutics, Inc. $36.84 02/14/2024 Food and Beverage Undisputed 01/23/2026 1085802642 CMS
SpringWorks Therapeutics, Inc. $26.93 06/12/2024 Food and Beverage Undisputed 01/23/2026 1085802644 CMS
Stemline Therapeutics Inc. $43.13 12/17/2024 Food and Beverage Undisputed 01/23/2026 1142960441 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, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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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.