Charles Kim, MD
Adult Medicine · Tustin, CANPI 1225564818
Payments from drug & device makers
Across 5 payments — averaging $61.56 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Daiichi Sankyo Inc.$145
- Merz North America, Inc.$143
- Harrow Eye, LLC$20
What the payments were for
- Food & beverage$308100%
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 |
|---|---|---|
| Daiichi Sankyo Inc. | 2 | $145 |
| Merz North America, Inc. | 2 | $143 |
| Harrow Eye, LLC | 1 | $20 |
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.
- INJECTAFER$125
How this compares
$308 in reported general payments places this provider in the 55th percentile of 221 adult medicine 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 |
|---|---|---|
| SantylCollagenase Clostridium Hist. | 62 | $90,727 |
| FarxigaDapagliflozin Propanediol | 47 | $40,322 |
| JanuviaSitagliptin Phosphate | 37 | $39,529 |
| JardianceEmpagliflozin | 23 | $28,939 |
| OzempicSemaglutide | 20 | $18,719 |
| Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog | 40 | $10,560 |
| CholestyramineCholestyramine (With Sugar) | 26 | $1,775 |
| Lantus SolostarInsulin Glargine,hum.Rec.Anlog | 18 | $1,710 |
| Nano 2nd Gen Pen NeedlePen Needle, Diabetic | 13 | $729 |
| Metformin Hcl | 109 | $726 |
| Atorvastatin Calcium | 88 | $696 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 17 | $692 |
| Losartan Potassium | 71 | $480 |
| Spironolactone-HctzSpironolact/Hydrochlorothiazid | 11 | $454 |
| Lisinopril | 68 | $398 |
Paid to pharmacies, not to this prescriber.
Other adult medicine in Tustin
- Gary BooneSan Diego$4.9M
- Salil NadkarniWest Hollywood$3.3M
- Robert FerreraSacramento$2.6M
- Ramin FarsadEncinitas$2.2M
- Susan HutchinsonLaguna Hills$1M
- Natalia GuzmanLos Angeles$583K
- Yasuko KidokoroSan Diego$267K
- Richard FauselRancho Mirage$30K
- Benedicto EstoestaValley Springs$22K
- Antoine DipsiaW. Sacramento$21K
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.