MARK A LYONS
Allopathic & Osteopathic Physicians|Internal Medicine DALLAS, TX NPI 1609079904
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine TX PFIZER INC. All categories
General Payments — all program years on this page
$1,204.37
- Category: General Payments
- Program years: PY2018–2024
- Record count: 63
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $159.22 across 8 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is 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
Latest program year (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $159.22 | 8 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| PFIZER INC. | $61.01 | 4 |
| E.R. Squibb & Sons, L.L.C. | $49.96 | 2 |
| Merck Sharp & Dohme Corporation | $25.12 | 1 |
| Gilead Sciences, Inc. | $23.13 | 1 |
By program year
Records — PY2024 (8)
| Record ID | Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Source |
|---|---|---|---|---|---|---|---|
| 1101457401 | E.R. Squibb & Sons, L.L.C. | $22.60 | 01/30/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1101457492 | E.R. Squibb & Sons, L.L.C. | $27.36 | 09/19/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131140277 | PFIZER INC. | $14.53 | 11/19/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131473097 | PFIZER INC. | $13.76 | 05/16/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131745706 | PFIZER INC. | $16.53 | 07/11/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131982907 | PFIZER INC. | $16.19 | 08/29/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1133763512 | Gilead Sciences, Inc. | $23.13 | 03/21/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1141831212 | Merck Sharp & Dohme LLC | $25.12 | 08/13/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- 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.