Katherine Nielsen
NPI 1598129249ActiveIndividual· Pediatrics· Torrance, CA
Pediatrics in Torrance, California, licensed in CA, with an NPI issued in April 2016. Enrolled in Medicare as practitioner - pediatric medicine. Merck Sharp & Dohme LLC was the largest of 10 companies reporting payments in 2025, $285.43 in all, mostly food and beverage.
Overview
| NPI | 1598129249 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 8, 2016 |
| Last updated in NPPES | Sep 27, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics Primary | 208000000X | A150744 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pediatric Medicine (CA) |
|---|
Industry payments (Open Payments)
- 2025$285.43 · 14 payments from 10 companies
- 2024$94.46 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $67.38 | 4 |
| Collegium Pharmaceutical, Inc. | $41.47 | 2 |
| Sanofi-Aventis U.S. LLC | $27.03 | 1 |
| Glaxosmithkline, LLC. | $26.28 | 1 |
| Alk-Abello, Inc | $26.03 | 1 |
What the 2025 payments were for
- Food and Beverage$285.43 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other pediatricians in Torrance
- 1134212814
- 1295924611
- 1427084250
- 1003917048
- 1013065036
- 1013163740
- 1043311079
- 1053146175
- 1063876829
- 1083624076
- 1083825145
- 1104723154
All 110 pediatricians in Torrance · All pediatricians in California