DAVID W LAM
Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology OKLAHOMA CITY, OK NPI 1295930972
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology OK PFIZER INC. All categories
General Payments — all program years on this page
$2,608.73
- Category: General Payments
- Program years: PY2018–2024
- Record count: 125
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $719.09 across 45 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 | $428.96 | 18 |
| Education | $290.13 | 27 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| PFIZER INC. | $291.11 | 28 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $231.36 | 8 |
| Abbott Laboratories | $53.68 | 1 |
| Tempus AI, Inc | $39.60 | 2 |
| SOBI, INC | $21.55 | 1 |
| Merck Sharp & Dohme Corporation | $18.09 | 1 |
| Acerta Pharma LLC | $17.79 | 1 |
| Ipsen Biopharmaceuticals, Inc | $16.23 | 1 |
| Gilead Sciences, Inc. | $15.32 | 1 |
| ABBVIE INC. | $14.36 | 1 |
By program year
Records — PY2024 (45)
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.