Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

LEE M BASS

Allopathic & Osteopathic Physicians Pediatrics Pediatric Gastroenterology

NPI
1881866259
CMS profile
786996
Location
CHICAGO, IL

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.

General Payments · PY2022–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$51,470.83

42 records · 0 disputed

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“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.
  • Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
Ipsen Biopharmaceuticals, Inc $31,139.80 13
Mirum Pharmaceuticals, Inc. $19,581.03 28
EvoEndo, Inc $750.00 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2022 $10,106.21 4
PY2023 $49,760.79 33
PY2024 $37,230.41 36
PY2025 $51,470.83 42

Payment records · PY2025 (42)

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

Program year 2025 202220232024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Ipsen Biopharmaceuticals, Inc $1,920.00 12/19/2025 Consulting Fee No dispute reported 06/30/2026 1208859818 CMS
Mirum Pharmaceuticals, Inc. $770.00 12/11/2025 Consulting Fee No dispute reported 06/30/2026 1241159119 CMS
Mirum Pharmaceuticals, Inc. $149.33 12/11/2025 Food and Beverage No dispute reported 06/30/2026 1241159123 CMS
Mirum Pharmaceuticals, Inc. $3,080.00 12/11/2025 Consulting Fee No dispute reported 06/30/2026 1241159126 CMS
Ipsen Biopharmaceuticals, Inc $960.00 11/14/2025 Consulting Fee No dispute reported 06/30/2026 1208859820 CMS
EvoEndo, Inc $750.00 11/13/2025 Compensation for serving as faculty or as a speaker for a medical education program No dispute reported 06/30/2026 1161252841 CMS
Ipsen Biopharmaceuticals, Inc $158.28 11/08/2025 Food and Beverage No dispute reported 06/30/2026 1208859816 CMS
Mirum Pharmaceuticals, Inc. $129.50 11/06/2025 Food and Beverage No dispute reported 06/30/2026 1241159116 CMS
Ipsen Biopharmaceuticals, Inc $4,800.00 10/10/2025 Consulting Fee No dispute reported 06/30/2026 1208859822 CMS
Ipsen Biopharmaceuticals, Inc $5,049.00 09/09/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1208859812 CMS
Ipsen Biopharmaceuticals, Inc $1,377.00 07/30/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1208859810 CMS
Ipsen Biopharmaceuticals, Inc $1,377.00 07/01/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1208859814 CMS
Ipsen Biopharmaceuticals, Inc $1,920.00 06/02/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1208859830 CMS
Ipsen Biopharmaceuticals, Inc $3,360.00 04/15/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1208859808 CMS
Mirum Pharmaceuticals, Inc. $46.01 04/05/2025 Food and Beverage No dispute reported 06/30/2026 1241159082 CMS
Mirum Pharmaceuticals, Inc. $24.51 04/05/2025 Food and Beverage No dispute reported 06/30/2026 1241159110 CMS
Mirum Pharmaceuticals, Inc. $50.00 04/04/2025 Food and Beverage No dispute reported 06/30/2026 1241159086 CMS
Mirum Pharmaceuticals, Inc. $148.58 04/04/2025 Food and Beverage No dispute reported 06/30/2026 1241159090 CMS
Mirum Pharmaceuticals, Inc. $5,200.00 04/04/2025 Consulting Fee No dispute reported 06/30/2026 1241159095 CMS
Mirum Pharmaceuticals, Inc. $8.49 04/04/2025 Food and Beverage No dispute reported 06/30/2026 1241159099 CMS
Mirum Pharmaceuticals, Inc. $46.00 04/04/2025 Travel and Lodging No dispute reported 06/30/2026 1241159103 CMS
Mirum Pharmaceuticals, Inc. $46.00 04/04/2025 Travel and Lodging No dispute reported 06/30/2026 1241159107 CMS
Mirum Pharmaceuticals, Inc. $8.49 04/04/2025 Food and Beverage No dispute reported 06/30/2026 1241159113 CMS
Mirum Pharmaceuticals, Inc. $1,540.00 03/22/2025 Consulting Fee No dispute reported 06/30/2026 1241159079 CMS
Mirum Pharmaceuticals, Inc. $385.00 03/20/2025 Consulting Fee No dispute reported 06/30/2026 1241159036 CMS
Mirum Pharmaceuticals, Inc. $1,540.00 03/12/2025 Consulting Fee No dispute reported 06/30/2026 1241159047 CMS
Mirum Pharmaceuticals, Inc. $42.24 01/09/2025 Travel and Lodging No dispute reported 06/30/2026 1241159033 CMS
Mirum Pharmaceuticals, Inc. $23.17 01/09/2025 Food and Beverage No dispute reported 06/30/2026 1241159040 CMS
Mirum Pharmaceuticals, Inc. $29.33 01/09/2025 Travel and Lodging No dispute reported 06/30/2026 1241159044 CMS
Mirum Pharmaceuticals, Inc. $3,080.00 01/09/2025 Consulting Fee No dispute reported 06/30/2026 1241159051 CMS
Mirum Pharmaceuticals, Inc. $45.00 01/09/2025 Travel and Lodging No dispute reported 06/30/2026 1241159056 CMS
Mirum Pharmaceuticals, Inc. $132.50 01/09/2025 Food and Beverage No dispute reported 06/30/2026 1241159060 CMS
Mirum Pharmaceuticals, Inc. $2,310.00 01/09/2025 Consulting Fee No dispute reported 06/30/2026 1241159064 CMS
Mirum Pharmaceuticals, Inc. $11.19 01/09/2025 Food and Beverage No dispute reported 06/30/2026 1241159068 CMS
Mirum Pharmaceuticals, Inc. $17.50 01/09/2025 Travel and Lodging No dispute reported 06/30/2026 1241159072 CMS
Mirum Pharmaceuticals, Inc. $11.19 01/09/2025 Food and Beverage No dispute reported 06/30/2026 1241159076 CMS
Mirum Pharmaceuticals, Inc. $501.00 01/09/2025 Travel and Lodging No dispute reported 06/30/2026 1241159130 CMS
Mirum Pharmaceuticals, Inc. $206.00 01/09/2025 Travel and Lodging No dispute reported 06/30/2026 1241159134 CMS
Ipsen Biopharmaceuticals, Inc $9,180.00 01/01/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1208859824 CMS
Ipsen Biopharmaceuticals, Inc $299.12 01/01/2025 Travel and Lodging No dispute reported 06/30/2026 1208859826 CMS
Ipsen Biopharmaceuticals, Inc $578.05 01/01/2025 Travel and Lodging No dispute reported 06/30/2026 1208859828 CMS
Ipsen Biopharmaceuticals, Inc $161.35 01/01/2025 Food and Beverage No dispute reported 06/30/2026 1208859832 CMS

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
2022, 2023, 2024, 2025
Source files
Dataset page · Bulk file · PY2022 , PY2023 , PY2024 , 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
LEE M BASS, NPI 1881866259. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1881866259.
APA 7
IndustryPayments. (2026). LEE M BASS, NPI 1881866259 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1881866259
Bluebook
LEE M BASS, NPI 1881866259, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1881866259.

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