Gabriel Martinez Diaz, MD
Dermatology · Chicago, ILNPI 1245556695
Payments from drug & device makers
Across 726 payments — averaging $102.07 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Galderma Laboratories, L.p.$34K
- VYNE Pharmaceuticals Inc.$28K
- Journey Medical Corporation$4K
- Ortho Dermatologics, A Division Of Bausch Health US, LLC$2K
- Sun Pharmaceutical Industries Inc.$2K
- EPI Health, LLC$2K
- plus $3K from 19 others
What the payments were for
- Consulting fees$14,80020%
- Speaking & faculty fees$42,42057%
- Travel & lodging$2,8414%
- Food & beverage$13,77619%
- Education$2670%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Galderma Laboratories, L.p. | 176 | $33,670 |
| VYNE Pharmaceuticals Inc. | 98 | $27,727 |
| Journey Medical Corporation | 224 | $3,608 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 85 | $2,207 |
| Sun Pharmaceutical Industries Inc. | 16 | $2,068 |
| EPI Health, LLC | 1 | $1,500 |
| Mayne Pharma Commercial LLC | 48 | $737 |
| AbbVie(2 entities) | 11 | $514 |
| Medimetriks Pharmaceuticals, Inc. | 19 | $302 |
| Johnson & Johnson | 9 | $292 |
| Merz North America, Inc. | 4 | $215 |
| Botanix SB Inc | 3 | $200 |
| LEO Pharma Inc. | 7 | $176 |
| Janssen Scientific Affairs, LLC | 1 | $150 |
| Solta Medical, A Division Of Bausch Health US, LLC | 2 | $130 |
| Lilly USA, LLC | 2 | $124 |
| Pfizer | 2 | $117 |
| Novartis | 6 | $108 |
| Regeneron Healthcare Solutions, Inc. | 3 | $47 |
| Bristol Myers Squibb | 2 | $44 |
| Mentor Worldwide LLC | 1 | $40 |
| Dermavant Sciences, Inc. | 2 | $39 |
| Aclaris Therapeutics, Inc. | 2 | $37 |
| Sanofi | 1 | $36 |
| Encore Dermatology Inc. | 1 | $17 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$74,104 in reported general payments places this provider in the 90th percentile of 606 dermatology providers in Illinois.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other dermatology in Chicago
- Raj ChovatiyaChicago$3.7M
- Peter LioChicago$2.5M
- Elizabeth KiracofeChicago$1.6M
- Walter LiszewskiChicago$1.2M
- Maria ColavincenzoChicago$627K
- Carolyn JacobChicago$606K
- Roopal KunduChicago$498K
- Sarah ChamlinChicago$415K
- Omer IbrahimChicago$313K
- Joaquin BrievaChicago$311K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.