Christopher Zachary, MD
Procedural Dermatology · Irvine, CANPI 1013943836
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $8,060 of the $9,111 with a category attached, or 88.5%. 4 manufacturers reported payments, led by Merz North America, Inc. at 52.8% of the total. Reporting peaked in 2022 at $4,817 and has fallen 88.7% since, to $545 in 2024.
Across 15 payments — averaging $607.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merz North America, Inc.$5K
- AbbVie$4K
- Boehringer Ingelheim$99
- Galderma Laboratories, L.p.$67
Across 15 payments — averaging $17,448 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.
- AbbVie$262K
What the payments were for
- Consulting fees$8,06088%
- Food & beverage$1,05112%
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 |
|---|---|---|
| Merz North America, Inc. | 4 | $4,807 |
| AbbVie(2 entities) | 9 | $4,138 |
| Boehringer Ingelheim | 1 | $99 |
| Galderma Laboratories, L.p. | 1 | $67 |
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.
- BOTOX$230
How this compares
$9,111 in reported general payments places this provider in the 70th percentile of 108 procedural dermatology 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 |
|---|---|---|
| Doxycycline Monohydrate | 18 | $433 |
| ValacyclovirValacyclovir Hcl | 28 | $382 |
| Triamcinolone Acetonide | 11 | $89 |
Paid to pharmacies, not to this prescriber.
Other procedural dermatology in Irvine
- Sam Khalifianla Mesa$3.5M
- Sabrina FabiSan Diego$3.1M
- Natasha MesinkovskaMission Viejo$499K
- Jeanette BlackLos Angeles$492K
- Mitchel GoldmanSan Diego$425K
- Rebecca FitzgeraldLos Angeles$230K
- Suzanne KilmerSacramento$220K
- Zakia RahmanStanford$181K
- Hrak JalianSanta Monica$160K
- Amelia HausauerCampbell$117K
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.