Angela Chen, MD
Obstetrics · Los Angeles, CANPI 1710914262
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $547 of the $750 with a category attached, or 72.9%. Dentsply Sirona Inc accounts for 72.9% of it on its own, with 3 other manufacturers making up the rest.
Across 4 payments — averaging $187.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Dentsply Sirona Inc$547
- Organon$125
- Merck$59
- Boston Scientific$19
Across 13 payments — averaging $4840.59 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.
- Merck$62K
- Organon$733
What the payments were for
- Travel & lodging$54773%
- Food & beverage$20327%
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 |
|---|---|---|
| Dentsply Sirona Inc | 1 | $547 |
| Organon | 1 | $125 |
| Merck | 1 | $59 |
| Boston Scientific | 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.
- TENEO$547
- IMPLANON$125
How this compares
$750 in reported general payments places this provider in the 55th percentile of 119 obstetrics 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 |
|---|---|---|
| Estradiol | 24 | $1,911 |
Paid to pharmacies, not to this prescriber.
Other obstetrics in Los Angeles
- Paluk WaliaLos Angeles$1K
- Alan NoelLos Angeles$794
- Joslyn GumbsLos Angeles$781
- Peter WangGarden Grove$428K
- Douglas Woelkersla Jolla$57K
- Richard FriedmanBurbank$18K
- Jennifer ByerSanta Rosa$17K
- Omar AzizEl Centro$14K
- Frederica LofquistSan Francisco$14K
- Craig SafferSan Diego$14K
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.