Physician profile
Guillermo Lazo Diaz
NPI 1760421101
$42,517.05
in general payments reported to CMS, 2019-2025
46 companies · $2,323 in 2025
The $2,323 reported for 2025 was more than what a typical Medical Oncology provider received nationally (typical 2025 total: $1,158).
Payments by year
General and research payments by program year, as reported to CMS.
General payments by year: 2019: $23K · 2020: $5,983 · 2021: $6,990 · 2022: $2,881 · 2023: $1,248 · 2024: $442 · 2025: $2,323.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $2,301 · Consulting Fee: $1,485 · Education: $228.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $2,300.62 |
| Consulting Fee | $1,485.00 |
| Education | $227.66 |
Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.
Who reported paying
General payments only, as reported to CMS. Research payments are listed separately below. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Celgene Corporation | $9,457.26 | 2019-2025 | Reblozyl, Pomalyst, Pomalyst |
| Acceleron Pharma, INC. | $7,250.00 | 2020-2021 | |
| Rigel Pharmaceuticals, INC. | $5,550.20 | 2019-2023 | Rezlidhia, Tavalisse |
| Eisai INC. | $5,432.41 | 2019-2025 | |
| Seagen INC. | $4,941.25 | 2019 | |
| Incyte Corporation | $3,250.00 | 2020-2025 | |
| Astrazeneca Pharmaceuticals Lp | $2,616.77 | 2019-2022 | |
| Beigene USA, INC. | $625.00 | 2023 | |
| Lilly USA, LLC | $354.28 | 2019-2025 | Verzenio, Retevmo, Jaypirca |
| E.R. Squibb & Sons, L.L.C. | $318.67 | 2019-2025 | Opdualag, Sprycel, Eliquis |
| Novartis Pharmaceuticals Corporation | $284.64 | 2022-2025 | |
| Takeda Pharmaceuticals U.S.A., INC. | $224.68 | 2019-2025 | Ninlaro, Fruzaqla |
| Abbvie INC. | $198.20 | 2025 | |
| Sanofi-Aventis U.S. LLC | $162.98 | 2022-2023 | |
| Merck Sharp & Dohme LLC | $159.73 | 2019-2025 | Keytruda, Lynparza |
Show all 39 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Gilead Sciences, INC. | $145.70 | 2021-2025 | Trodelvy |
| Boston Scientific Corporation | $137.83 | 2025 | Therasphere Y90 Glass Microspheres 7.0 Gbq (US Commercial) |
| Amgen INC. | $126.63 | 2022 | |
| Kite Pharma, INC. | $125.00 | 2023 | Yescarta |
| Exelixis INC. | $124.36 | 2025 | Cabometyx |
| Daiichi Sankyo INC. | $118.48 | 2023-2025 | Enhertu |
| Tempus Ai, INC | $113.90 | 2024 | |
| Genzyme Corporation | $113.25 | 2022-2025 | |
| Pfizer INC. | $103.34 | 2022-2025 | |
| Verastem, INC. | $101.43 | 2019 | |
| Glaxosmithkline, LLC. | $89.50 | 2023-2025 | Ojjaara, Shingrix, Zejula |
| Genentech USA, INC. | $70.69 | 2025 | Tecentriq, Itovebi |
| Astellas Pharma US INC | $43.27 | 2025 | Vyloy, Xospata |
| Karyopharm Therapeutics INC. | $41.28 | 2025 | Xpovio |
| Ferring Pharmaceuticals INC. | $36.76 | 2025 | Adstiladrin |
| Emd Serono, INC. | $31.53 | 2023 | Bavencio |
| Janssen Biotech, INC. | $29.58 | 2022-2025 | Tecvayli, Talvey |
| Sobi, INC | $25.26 | 2022 | |
| Array Biopharma INC | $23.25 | 2025 | Mektovi, Lorbrena, Xalkori |
| Sirtex Medical INC | $21.28 | 2023 | Sir-Spheres Microspheres |
| Regeneron Healthcare Solutions, INC. | $18.02 | 2024 | Libtayo |
| Beone Medicines USA, INC. | $17.43 | 2025 | Brukinsa |
| Ipsen Biopharmaceuticals, INC | $17.43 | 2025 | Onivyde |
| Taiho Oncology, INC. | $15.78 | 2024 |
7 companies reported research payments only; those appear in the research section below.
Drugs and devices associated with these payments
CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.
Research and ownership
$105.30 in research payments reported 2019-2025. Research payments are often institution-directed and tied to clinical trials: they are reported under a clinician's name but frequently go to a hospital or research organization, and usually reflect participation in medical research.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Guillermo Lazo Diaz listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.