Michael Han
Oral & Maxillofacial Surgery · Chicago, ILNPI 1326338948
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $3,586 of the $5,968 with a category attached, or 60.1%. Kls-martin L.p. accounts for 87.8% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2023 at $4,266 and has fallen 97.1% since, to $125 in 2025. Among oral & maxillofacial surgery clinicians in IL 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 36 payments — averaging $165.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Kls-martin L.p.$5K
- Axogen$410
- Stryker$219
- Globus Medical$81
- Inspire Medical Systems, Inc.$18
Across 13 payments — averaging $1704.70 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.
- Kowa Research Institute, Inc.$12K
- Astrazeneca UK Limited$11K
- AstraZeneca$16
What the payments were for
- Travel & lodging$3,58660%
- Food & beverage$2,38240%
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 |
|---|---|---|
| Kls-martin L.p. | 24 | $5,241 |
| Axogen | 4 | $410 |
| Stryker | 3 | $219 |
| Globus Medical | 4 | $81 |
| Inspire Medical Systems, Inc. | 1 | $18 |
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.
How this compares
$5,968 in reported general payments places this provider in the 90th percentile of 294 oral & maxillofacial surgery providers in Illinois.
See all oral & maxillofacial surgery providers in Illinois →
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 oral & maxillofacial surgery in Chicago
- Russell BaerChicago$146K
- Michael MiloroChicago$97K
- Akanksha SrivastavaChicago$34K
- Jordan LedgerChicago$21K
- David HansonChicago$20K
- Nicholas CallahanChicago$7K
- Philip MeehanChicago$4K
- Ali Al-QudsiChicago$4K
- David ReisbergChicago$3K
- Jordan ElmowitzChicago$3K
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.