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

IAN B DEROOCK

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1114900479
CMS profile
322783
Location
CHANDLER, AZ

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 · PY2019 · Entire year

$1,598.18

102 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 ↗

Page 1 of 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

IAN B DEROOCK

NPI 1114900479 · CMS profile ID 322783

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

CHANDLER, AZ

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.

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.

General Payments, PY2019; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 1 of 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1114900479?year=2019&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain
IAN B DEROOCK, NPI 1114900479, CMS profile ID 322783. General Payments, PY2019; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1114900479?year=2019&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e.
APA 7
IndustryPayments. (2026). IAN B DEROOCK, NPI 1114900479, CMS profile ID 322783. General Payments, PY2019; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1114900479?year=2019&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e.
Bluebook
IAN B DEROOCK, NPI 1114900479, CMS profile ID 322783, IndustryPayments, General Payments, PY2019; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 1 of 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e. https://industrypayments.org/provider/npi-1114900479?year=2019&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

Payment records · PY2019

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

General Payments · PY2019 · Physicians and non-physician practitioners · CMS publication 2026-06-30

102 matching records · $1,598.18 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 102 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 102.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
JAZZ PHARMACEUTICALS INC. $11.8112/20/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 684182089 CMS
Rigel Pharmaceuticals, Inc. $20.4512/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 752058933 CMS
Merck Sharp & Dohme Corporation $16.0412/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695860341 CMS
Mylan Institutional Inc. $20.8112/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 694808951 CMS
Janssen Biotech, Inc. $22.6612/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658397819 CMS
Verastem, Inc. $12.0012/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 699793303 CMS
Amgen Inc. $15.7212/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 662403233 CMS
Janssen Biotech, Inc. $20.5612/06/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658397815 CMS
Amgen Inc. $17.3512/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 731297175 CMS
GENZYME CORPORATION $17.9112/03/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 694233779 CMS
E.R. Squibb & Sons, L.L.C. $17.6912/02/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651423307 CMS
TESARO, Inc. $39.5811/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 675558005 CMS
GENZYME CORPORATION $16.4211/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 694230461 CMS
Pharmacyclics LLC, An AbbVie Company $19.6711/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 665711489 CMS
Merck Sharp & Dohme Corporation $9.8211/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695860533 CMS
Sun Pharmaceutical Industries Inc. $18.1010/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 704590047 CMS
Merck Sharp & Dohme Corporation $16.1810/28/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695787499 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $14.5410/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 700262527 CMS
Ipsen Biopharmaceuticals, Inc $15.5210/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 640634829 CMS
Kyowa Kirin, Inc. $20.7310/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 687561059 CMS
Novartis Pharmaceuticals Corporation $15.8010/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658954036 CMS
Merck Sharp & Dohme Corporation $7.7910/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695836153 CMS
EISAI INC. $15.4609/24/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 697016789 CMS
Lilly USA, LLC $21.0909/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 657845867 CMS
Janssen Pharmaceuticals, Inc $10.7309/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658505403 CMS
E.R. Squibb & Sons, L.L.C. $11.1309/12/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651423259 CMS
Merck Sharp & Dohme Corporation $7.9309/12/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695754039 CMS
Merck Sharp & Dohme Corporation $7.8909/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695728785 CMS
Janssen Biotech, Inc. $18.6109/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658397813 CMS
Amgen Inc. $13.7909/06/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 662403249 CMS
Amgen Inc. $17.8608/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 662403245 CMS
Novartis Pharmaceuticals Corporation $10.9808/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658954031 CMS
AstraZeneca Pharmaceuticals LP $15.3008/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 688762587 CMS
Bayer HealthCare Pharmaceuticals Inc. $14.4208/20/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 628413705 CMS
Verastem, Inc. $14.3508/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 699793315 CMS
Puma Biotechnology, Inc. $23.2708/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 706018739 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $16.9708/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 700262529 CMS
Clovis Oncology, Inc. $15.3008/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 688690379 CMS
Kyowa Kirin, Inc. $25.0908/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 687561057 CMS
Amgen Inc. $16.4108/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 662403241 CMS
Incyte Corporation $20.2408/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 666239263 CMS
Ipsen Biopharmaceuticals, Inc $10.8808/06/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 640641887 CMS
Sun Pharmaceutical Industries Inc. $16.2107/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 704590045 CMS
Dova Pharmaceuticals $15.3907/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 705235658 CMS
Merck Sharp & Dohme Corporation $10.9807/24/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695660597 CMS
Merck Sharp & Dohme Corporation $14.8507/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 695719143 CMS
Janssen Biotech, Inc. $10.5907/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658397809 CMS
Novartis Pharmaceuticals Corporation $10.8607/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658954029 CMS
Pharmacyclics LLC, An AbbVie Company $15.0807/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 665707385 CMS
E.R. Squibb & Sons, L.L.C. $12.4906/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651423225 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $1,598.18 102
PY2020 $1,507.90 94
PY2021 $3,225.21 177
PY2022 $3,212.79 171
PY2023 $2,567.47 118
PY2024 $3,330.94 135
PY2025 $2,887.17 128

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

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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.