Dathan Hamann, MD
Dermatology · Phoenix, AZNPI 1760801070
Payments from drug & device makers
Across 443 payments — averaging $3673.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Allerderm Laboratories$1.3M
- Takeda Pharmaceuticals U.S.A., Inc.$223K
- Pfizer$43K
- Sanofi US Services Inc.$8K
- Incyte Corporation$5K
- Sanofi$3K
- plus $7K from 29 others
Across 1 payment — averaging $26.66 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Eli Lilly$27
What the payments were for
- Consulting fees$22,67240%
- Speaking & faculty fees$21,34038%
- Travel & lodging$2,4864%
- Food & beverage$9,32017%
- Education$2951%
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 |
|---|---|---|
| Allerderm Laboratories | 1 | $1,338,598 |
| Takeda Pharmaceuticals U.S.A., Inc. | 38 | $223,018 |
| Pfizer | 47 | $42,534 |
| Sanofi US Services Inc. | 4 | $7,550 |
| Incyte Corporation | 65 | $5,195 |
| Sanofi | 17 | $3,225 |
| AbbVie(2 entities) | 46 | $1,059 |
| Regeneron Healthcare Solutions, Inc. | 25 | $717 |
| LEO Pharma Inc. | 29 | $708 |
| Dermavant Sciences, Inc. | 22 | $621 |
| Lilly USA, LLC | 24 | $522 |
| Johnson & Johnson | 26 | $510 |
| Janssen Scientific Affairs, LLC | 3 | $397 |
| Galderma Laboratories, L.p. | 11 | $369 |
| UCB, Inc. | 13 | $255 |
| Organon | 9 | $253 |
| E.r. Squibb & Sons, L.L.C. | 6 | $253 |
| Kyowa Kirin, Inc. | 8 | $239 |
| Sun Pharmaceutical Industries Inc. | 10 | $236 |
| Botanix SB Inc | 4 | $154 |
| Arcutis Biotherapeutics, Inc. | 6 | $112 |
| Argenx US, Inc. | 1 | $108 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 3 | $108 |
| Stemline Therapeutics Inc. | 2 | $106 |
| Krystal Biotech Inc | 3 | $103 |
| Novartis | 4 | $93 |
| Merz North America, Inc. | 2 | $80 |
| Chiesi USA, Inc. | 2 | $68 |
| Fresenius Kabi USA, LLC | 2 | $57 |
| Biofrontera Inc. | 2 | $51 |
| Boehringer Ingelheim | 2 | $49 |
| Genentech USA, Inc. | 2 | $41 |
| Helsinn Therapeutics (U.S.), Inc. | 2 | $26 |
| Blueprint Medicines Corporation | 1 | $22 |
| Verrica Pharmaceuticals 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
$1,627,453 in reported general payments places this provider in the 95th percentile of 305 dermatology providers in Arizona.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| ErivedgeVismodegib | 12 | $157,214 |
| Dupixent PenDupilumab | 11 | $42,186 |
| Tacrolimus | 14 | $2,249 |
| Clobetasol Propionate | 51 | $2,017 |
| Fluorouracil | 23 | $1,608 |
| Triamcinolone Acetonide | 118 | $1,605 |
| Betamethasone Dipropionate | 15 | $712 |
| Fluocinolone AcetonideFluocinolone/Shower Cap | 20 | $672 |
| Mycophenolate Mofetil | 23 | $594 |
| Ketoconazole | 44 | $549 |
| Doxycycline Hyclate | 12 | $448 |
| Fluocinonide | 11 | $444 |
| Prednisone | 40 | $262 |
| Nystatin | 12 | $192 |
| Mupirocin | 12 | $121 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Genentech USA, Inc.Erivedge | $41 | $157,21412 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 305 dermatology providers in Arizona.
Other dermatology in Phoenix
- Kenneth SteilPhoenix$15.6M
- Lindsay AckermanPhoenix$7.4M
- Sadra JazayeriPhoenix$5.2M
- Carsten HamannPhoenix$1.7M
- Nathalie ZeitouniPhoenix$1.4M
- Adam LuberPhoenix$243K
- Karen HastingsPhoenix$218K
- Michael CrandallPhoenix$153K
- William KoPhoenix$122K
- Andrew RacettePhoenix$102K
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.