Karen Sierra, DDS
NPI 1619449915ActiveIndividual· Dentist· Downey, CA
Dentist (DDS) in Downey, California, licensed in CA, with an NPI issued in December 2018. Patterson Companies, Inc. was the largest of 2 companies reporting payments in 2025, $127.61 in all, mostly food and beverage.
Overview
| NPI | 1619449915 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DDS |
| Sole proprietor | No |
| NPI issued | Dec 26, 2018 |
| Last updated in NPPES | Mar 29, 2024 |
| Certified by provider | Mar 29, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist Primary | 122300000X | 104221 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$127.61 · 4 payments from 2 companies
- 2024$53.65 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Patterson Companies, Inc. | $116.05 | 3 |
| Voco America Inc. | $11.56 | 1 |
What the 2025 payments were for
- Food and Beverage$127.61 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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