Allen Chien
Oral and Maxillofacial Surgery · Fresno, CANPI 1518145598
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (33.0%), gifts and speaking fees — rather than concentrated in one kind of arrangement. 9 manufacturers reported payments, led by Straumann USA LLC at 42.2% of the total. Reporting peaked in 2021 at $7,355 and has fallen 93.6% since, to $473 in 2025. Among oral and maxillofacial surgery clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 179 payments — averaging $93.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Straumann USA LLC$7K
- Zimmer Biomet$4K
- Zimvie Inc.$2K
- Geistlich Pharma, North America, Inc.$1K
- Scican Inc$1K
- Biohorizons Implant Systems Inc.$728
- plus $289 from 3 others
What the payments were for
- Speaking & faculty fees$3,00018%
- Grants$5914%
- Travel & lodging$2,47115%
- Food & beverage$5,50833%
- Education$1,1007%
- Gifts$4,00024%
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 |
|---|---|---|
| Straumann USA LLC | 24 | $7,031 |
| Zimmer Biomet | 93 | $3,845 |
| Zimvie Inc. | 29 | $2,389 |
| Geistlich Pharma, North America, Inc. | 11 | $1,315 |
| Scican Inc | 1 | $1,072 |
| Biohorizons Implant Systems Inc. | 13 | $728 |
| Johnson & Johnson | 5 | $170 |
| Salvin Dental Specialties, Inc. | 1 | $63 |
| Align Technology, Inc. | 2 | $57 |
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.
- BIOHORIZONS$1,379
- Tapered Screw-Vent$1,118
- Cover-Top Low Hydrim M2-G4$1,072
- Diem2$737
- Bio-Oss$591
- Geistlich Bio Gide$454
- All T3 Implants$365
- BioHorizons Dental Implants$164
- Bio-Materials$151
- Dental-None$144
- Bellatek$136
- TMT MTX$100
How this compares
$16,670 in reported general payments places this provider in the 95th percentile of 941 oral and maxillofacial surgery providers in California.
See all oral and maxillofacial 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 |
|---|---|---|
| Amoxicillin | 242 | $806 |
| Ibuprofen | 124 | $272 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 68 | $172 |
| Acetaminophen-CodeineAcetaminophen With Codeine | 43 | $150 |
| Clindamycin Hcl | 27 | $136 |
| Chlorhexidine Gluconate | 19 | $124 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 14 | $105 |
| Azithromycin | 13 | $55 |
Paid to pharmacies, not to this prescriber.
Other oral and maxillofacial surgery in Fresno
- Ardavan KheradpirFresno$16K
- Thomas CurielFresno$14K
- Brian HuhFresno$12K
- Robert JulianFresno$11K
- Edmond BedrossianSan Francisco$3.7M
- Peter WohrleNewport Beach$735K
- Jone KimBrea$721K
- G William ArnettSanta Barbara$713K
- Arshiya SharafiSan Diego$457K
- Alan HerfordColton$292K
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.