Timothy Chang, MD
MOHS-Micrographic Surgery · la Jolla, CANPI 1962766337
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 95.1% of the total across 438 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 31 manufacturers, the largest accounting for just 13.9% — the pattern of someone who eats at a lot of different presentations.
Across 438 payments — averaging $20.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$1K
- Pfizer$1K
- Johnson & Johnson$1K
- Regeneron Healthcare Solutions, Inc.$773
- Sun Pharmaceutical Industries Inc.$575
- LEO Pharma Inc.$511
- plus $4K from 25 others
What the payments were for
- Food & beverage$8,66195%
- Education$4455%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| AbbVie(2 entities) | 64 | $1,269 |
| Pfizer | 49 | $1,109 |
| Johnson & Johnson | 49 | $1,016 |
| Regeneron Healthcare Solutions, Inc. | 38 | $773 |
| Sun Pharmaceutical Industries Inc. | 22 | $575 |
| LEO Pharma Inc. | 22 | $511 |
| Incyte Corporation | 21 | $427 |
| Lilly USA, LLC | 20 | $404 |
| Arcutis Biotherapeutics, Inc. | 17 | $378 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 36 | $371 |
| E.r. Squibb & Sons, L.L.C. | 14 | $351 |
| Amgen | 13 | $286 |
| Galderma Laboratories, L.p. | 16 | $260 |
| Almirall LLC | 9 | $201 |
| Novartis | 8 | $161 |
| UCB, Inc. | 6 | $153 |
| Sanofi | 7 | $133 |
| VYNE Pharmaceuticals Inc. | 5 | $130 |
| Regeneron | 1 | $126 |
| Dermira, Inc. | 4 | $100 |
| Merz North America, Inc. | 3 | $94 |
| Boehringer Ingelheim | 3 | $66 |
| Sanofi-aventis U.S. LLC | 2 | $48 |
| Organon | 1 | $28 |
| Bristol Myers Squibb | 1 | $25 |
| Journey Medical Corporation | 1 | $24 |
| DUSA Pharmaceuticals, Inc. | 1 | $20 |
| Apyx Medical Corporation | 2 | $20 |
| Merck | 1 | $19 |
| Misonix Inc | 1 | $15 |
| Sandoz | 1 | $15 |
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.
- DUPIXENT$126
How this compares
$9,106 in reported general payments places this provider in the 85th percentile of 144 mohs-micrographic surgery providers in California.
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 |
|---|---|---|
| Taltz AutoinjectorIxekizumab | 12 | $79,376 |
| Tacrolimus | 23 | $4,006 |
| Fluorouracil | 38 | $2,313 |
| Clobetasol Propionate | 39 | $1,485 |
| Clindamycin Phosphate | 39 | $1,356 |
| Doxycycline Hyclate | 95 | $1,140 |
| Ketoconazole | 71 | $1,136 |
| Fluocinonide | 17 | $493 |
| Mupirocin | 63 | $454 |
| Metronidazole | 14 | $453 |
| Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip | 18 | $298 |
| Ciclopirox | 11 | $276 |
| Triamcinolone Acetonide | 32 | $261 |
| Hydrocortisone | 23 | $136 |
Paid to pharmacies, not to this prescriber.
Other mohs-micrographic surgery in la Jolla
- Daniel Zelacla Jolla$43K
- Benjamin Kelleyla Jolla$20K
- Sarah ArronBurlingame$98K
- Ralph MasseySanta Monica$38K
- Michael MortazieOrange$29K
- Sumaira AasiStanford$27K
- Andrea WilleySacramento$21K
- Frank NoodlemanSaratoga$19K
- Howard FeinRolling Hills Estates$19K
- Joanna ChanLong Beach$18K
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.