Sung Ham, MD
Vascular Surgery · Harbor City, CANPI 1790929164
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $28,350 of the $41,862 with a category attached, or 67.7%. W. L. Gore & Associates, Inc. accounts for 94.5% of it on its own, with 12 other manufacturers making up the rest. Reporting peaked in 2019 at $37,327 and has fallen 97.2% since, to $1,033 in 2025. Among vascular surgery clinicians in CA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 127 payments — averaging $329.62 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- W. L. Gore & Associates, Inc.$40K
- Cook Medical LLC$1K
- Endologix LLC$573
- Bolton Medical Inc$274
- Medtronic$148
- Stryker$66
- plus $209 from 7 others
What the payments were for
- Speaking & faculty fees$28,35068%
- Travel & lodging$7,36718%
- Food & beverage$6,14415%
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 |
|---|---|---|
| W. L. Gore & Associates, Inc. | 67 | $39,568 |
| Cook Medical LLC | 26 | $1,024 |
| Endologix LLC | 12 | $573 |
| Bolton Medical Inc | 8 | $274 |
| Medtronic(2 entities) | 4 | $148 |
| Stryker | 1 | $66 |
| Lemaitre Vascular, Inc. | 3 | $56 |
| Boston Scientific | 1 | $40 |
| Silk Road Medical, Inc. | 1 | $30 |
| Catheter Precision, Inc. FKA Ra Medical Systems, Inc. | 1 | $29 |
| Artivion, Inc. | 1 | $20 |
| Biotronik Inc. | 1 | $18 |
| Philips North America LLC | 1 | $17 |
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.
- EXCLUDER AAA Endoprosthesis$21,796
- TAG Thoracic Endoprosthesis$14,184
- EXCLUDER Conformable AAA Endoprosthesis with Active Control$941
- GORE EXCLUDER Iliac Branch Endoprosthesis$819
- GORE EXCLUDER AAA Endoprosthesis$340
- Zenith Alpha$284
- Cook Medical Thoracic$222
- GORE TAG Conformable Thoracic Endoprosthesis$170
- GORE TAG Thoracic Branch Endoprosthesis$159
- Zilver PTX$121
- Relay Grafts$120
- Ovation$119
- Conformable TAG Thoracic Endoprosthesis$100
How this compares
$41,862 in reported general payments places this provider in the 90th percentile of 519 vascular 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 |
|---|---|---|
| EliquisApixaban | 42 | $47,128 |
| PradaxaDabigatran Etexilate Mesylate | 36 | $9,633 |
| ClopidogrelClopidogrel Bisulfate | 94 | $1,749 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 94 | $812 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 23 | $284 |
| Meloxicam | 14 | $95 |
| Tramadol Hcl | 12 | $74 |
Paid to pharmacies, not to this prescriber.
Other vascular surgery in Harbor City
- Son DuongFountain Valley$503K
- Venita ChandraPalo Alto$488K
- Sukgu HanLos Angeles$477K
- Leigh Ann ObanionFresno$469K
- Trevor DerderianRancho Mirage$359K
- Karthikeshwar KasirajanPalo Alto$349K
- Johnathon RolloLos Angeles$337K
- Melissa LojaFairfield$272K
- Jason LeePalo Alto$228K
- John LaneSan Diego$212K
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.