Covered recipient · General Payments record

MARK M DAVIDSON

Allopathic & Osteopathic Physicians Internal Medicine

NPI: 1164459178
CMS profile: 279549
Location: LOS ANGELES, CA

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 · PY2023 · Entire year

$1,819.56

93 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 July 26, 2026. 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

PY2023 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$1,729.57	92
Education	$89.99	1

By paying entity

PY2023 · entire year · sorted by reported total

Paying entity	Amount	Records
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$900.05	49
Janssen Biotech, Inc.	$319.43	18
Gilead Sciences, Inc.	$104.92	3
QOL Medical, LLC	$104.31	5
Bayer Healthcare Pharmaceuticals Inc.	$99.67	4
Napo Pharmaceuticals Inc	$91.49	6
Merck Sharp & Dohme LLC	$31.68	1
Ardelyx, Inc.	$31.46	1
GlaxoSmithKline, LLC.	$31.33	1
Alnylam Pharmaceuticals Inc.	$29.57	1
RedHill Biopharma Inc.	$24.41	1
Lilly USA, LLC	$20.02	1
AbbVie Inc.	$17.06	1
Regeneron Healthcare Solutions, Inc.	$14.16	1

Page 1 of 2; records 1–50 of 93 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

MARK M DAVIDSON

NPI 1164459178 · CMS profile ID 279549

Allopathic & Osteopathic Physicians / Internal Medicine

LOS ANGELES, CA

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, PY2023; 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 2; records 1–50 of 93 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1164459178?year=2023&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9

Cite these filtered records

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

Plain: MARK M DAVIDSON, NPI 1164459178, CMS profile ID 279549. General Payments, PY2023; 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 2; records 1–50 of 93 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1164459178?year=2023&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
APA 7: IndustryPayments. (2026). MARK M DAVIDSON, NPI 1164459178, CMS profile ID 279549. General Payments, PY2023; 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 2; records 1–50 of 93 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1164459178?year=2023&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
Bluebook: MARK M DAVIDSON, NPI 1164459178, CMS profile ID 279549, IndustryPayments, General Payments, PY2023; 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 2; records 1–50 of 93 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9. https://industrypayments.org/provider/npi-1164459178?year=2023&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

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

General Payments only. Research Payments and Ownership/Investment Interests are separate datasets and are not included.

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

Centers for Medicare & Medicaid Services, Open Payments

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.

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.

IndustryPayments.org is not a consumer reporting agency as defined by the Fair Credit Reporting Act. Do not use this site to determine any person's eligibility for employment, credentialing, insurance, credit, housing, or any other purpose covered by the FCRA.

Methodology: https://industrypayments.org/methodology

Payment records · PY2023

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

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

93 matching records · $1,819.56 reported total · 0 disputed

Nature of payment: All payment types

Records imported here November 5, 2026 (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 93 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 93.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$20.47	12/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057178349	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$7.68	12/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057429263	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$8.35	12/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057430677	CMS
Bayer Healthcare Pharmaceuticals Inc.	$33.44	12/02/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1000382449	CMS
Janssen Biotech, Inc.	$9.87	12/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031213	CMS
Ardelyx, Inc.	$31.46	11/30/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1052944607	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$10.93	11/20/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057273759	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.24	11/20/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057385713	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$23.78	11/20/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057445427	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$12.33	11/15/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057465039	CMS
Janssen Biotech, Inc.	$3.54	11/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031199	CMS
Janssen Biotech, Inc.	$6.80	11/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031205	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.85	11/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057285065	CMS
GlaxoSmithKline, LLC.	$31.33	11/02/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1000969021	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$21.51	11/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057326009	CMS
Janssen Biotech, Inc.	$11.16	10/27/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031235	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$23.52	10/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057394951	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$23.40	10/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057490721	CMS
Merck Sharp & Dohme LLC	$31.68	10/20/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048901505	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$24.79	10/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057132223	CMS
AbbVie Inc.	$17.06	09/26/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	996600071	CMS
Janssen Biotech, Inc.	$8.09	09/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031251	CMS
Janssen Biotech, Inc.	$27.33	09/06/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031261	CMS
Janssen Biotech, Inc.	$17.32	08/29/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031245	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$17.78	08/23/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057417315	CMS
QOL Medical, LLC	$19.40	08/22/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1059270101	CMS
Janssen Biotech, Inc.	$89.99	08/16/2023	Education	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031191	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$20.42	08/10/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057394505	CMS
Lilly USA, LLC	$20.02	08/09/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1031838303	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.53	08/08/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057194597	CMS
Bayer Healthcare Pharmaceuticals Inc.	$29.32	08/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1000376595	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$13.36	08/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057489475	CMS
Alnylam Pharmaceuticals Inc.	$29.57	08/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1006143751	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$6.73	07/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057429229	CMS
Janssen Biotech, Inc.	$10.46	07/27/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031229	CMS
Janssen Biotech, Inc.	$15.27	07/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031221	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.33	07/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057345201	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$13.82	07/17/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057179087	CMS
QOL Medical, LLC	$17.81	07/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1059270097	CMS
Napo Pharmaceuticals Inc	$16.23	07/06/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1059871347	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$11.36	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057186097	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$18.05	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057254127	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$8.78	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057413323	CMS
Janssen Biotech, Inc.	$13.08	06/19/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988031275	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$23.26	06/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057092657	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$6.23	06/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057200465	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$17.12	06/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057200851	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$14.38	06/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057192155	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$11.19	06/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1057234733	CMS
Bayer Healthcare Pharmaceuticals Inc.	$12.88	06/05/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1000234095	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$1,123.43	48
PY2020	$1,791.38	95
PY2021	$2,430.47	141
PY2022	$2,392.90	134
PY2023	$1,819.56	93
PY2024	$2,443.72	115
PY2025	$2,277.07	70

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

Source files: Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , 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.