Hueylan Chern, MD
Colon & Rectal Surgery · San Francisco, CANPI 1942461645
Payments from drug & device makers
What this record shows
This record is dominated by education: $15,315 of the $16,790 with a category attached, or 91.2%. Intuitive Surgical accounts for 99.3% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2024 at $11,660 and has fallen 77.1% since, to $2,669 in 2025.
Across 40 payments — averaging $419.74 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$17K
- Medtronic$91
- Johnson & Johnson$19
Across 4 payments — averaging $77,712 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.
- Intuitive Surgical Operations, Inc.$311K
What the payments were for
- Travel & lodging$3502%
- Food & beverage$1,1247%
- Education$15,31591%
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 |
|---|---|---|
| Intuitive Surgical | 38 | $16,679 |
| Medtronic | 1 | $91 |
| Johnson & Johnson | 1 | $19 |
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.
- Da Vinci Surgical System$13,366
- DA VINCI SP$2,500
How this compares
$16,790 in reported general payments places this provider in the 80th percentile of 176 colon & rectal 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.
Other colon & rectal surgery in San Francisco
- Michael AbelSan Francisco$15K
- Sang LeeLos Angeles$2.4M
- Pamela LeeSan Diego$544K
- Elizabeth RaskinSacramento$126K
- Shohrat AnnaberdyevRoseville$101K
- Alessio PigazziLos Angeles$100K
- Joseph CarmichaelOrange$99K
- Phillip FleshnerWest Hollywood$95K
- Zuri MurrellBeverly Hills$86K
- Lorenc MalellariBakersfield$78K
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.