Stephanie de Santiago
Gerontology · Sun City, AZNPI 1497303028
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 20 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 15 manufacturers, the largest accounting for just 20.0% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $377, more than ten times the $18 reported in 2022. That places this record below the midpoint for gerontology clinicians in AZ, where the typical reported total is $478.
Across 20 payments — averaging $21.85 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Eisai Inc.$87
- UCB, Inc.$59
- Biogen$42
- Jazz Pharmaceuticals Inc.$29
- C2n Diagnostics, LLC$28
- Argenx US, Inc.$28
- plus $164 from 9 others
What the payments were for
- Food & beverage$437100%
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 |
|---|---|---|
| Eisai Inc. | 3 | $87 |
| UCB, Inc. | 2 | $59 |
| Biogen | 2 | $42 |
| Jazz Pharmaceuticals Inc. | 1 | $29 |
| C2n Diagnostics, LLC | 2 | $28 |
| Argenx US, Inc. | 1 | $28 |
| Otsuka America Pharmaceutical, Inc. | 1 | $26 |
| Teva Pharmaceuticals USA, Inc. | 1 | $22 |
| Novartis | 1 | $18 |
| Corium, LLC | 1 | $18 |
| AbbVie | 1 | $17 |
| Impel Pharmaceuticals LLC | 1 | $17 |
| Pfizer | 1 | $16 |
| Neurocrine Biosciences, Inc. | 1 | $16 |
| Harmony Biosciences LLC | 1 | $13 |
How this compares
$437 in reported general payments places this provider in the 45th percentile of 99 gerontology 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 |
|---|---|---|
| Rivastigmine | 23 | $6,531 |
| Memantine Hcl | 220 | $6,525 |
| Donepezil Hcl | 344 | $4,462 |
| Galantamine ErGalantamine Hbr | 14 | $2,009 |
| Memantine Hcl ErMemantine Hcl | 24 | $1,909 |
| Escitalopram Oxalate | 105 | $1,486 |
| Quetiapine Fumarate | 49 | $1,120 |
| Sertraline Hcl | 74 | $832 |
| Mirtazapine | 16 | $829 |
| Carbidopa-LevodopaCarbidopa/Levodopa | 15 | $520 |
| Bupropion XlBupropion Hcl | 13 | $351 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 14 | $128 |
| Trazodone Hcl | 27 | $101 |
Paid to pharmacies, not to this prescriber.
Other gerontology in Sun City
- Debra WittharSun City$11K
- Peter HennisCasa Grande$63K
- Alice HallOro Valley$13K
- Daniel KrausGilbert$12K
- Alexis LincolnPhoenix$10K
- Sonia Quinonez-NavaScottsdale$10K
- Lexi MickeyGlendale$10K
- Megan BruxerMesa$9K
- David FarrowPhoenix$9K
- Utibe EtudorPrescott$7K
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.