Ronald Siregar, MD
NPI 1972124865ActiveIndividual· Family Medicine· Carson, CA
Family Medicine (MD) with Torrance Health Association Inc, practicing in Carson, California. Their prescriptions cost Medicare Part D more than their services did: $43,249 for 552 claims, against $14,225 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $251.54 in all, mostly food and beverage. Lists Torrance Memorial Medical Center as a hospital affiliation.
Overview
| NPI | 1972124865 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 1, 2020 |
| Last updated in NPPES | Oct 17, 2023 |
| Certified by provider | Oct 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A190650 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 89 |
|---|---|
| Services billed | 178 across 26 procedure codes |
| Paid by Medicare | $14,225 |
Part D prescriptions in 2024
| Prescriptions (claims) | 552 · 997 30-day fills |
|---|---|
| Patients | 176 |
| Total drug cost | $43,249 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Torrance Health Association IncRedondo Beach, CA · 299 clinicians
Hospital affiliation
- Torrance Memorial Medical CenterTorrance, CA
Other facilities
- Torrance Memorial Home HealthHome health agency · Torrance, CA
Industry payments (Open Payments)
- 2025$251.54 · 13 payments from 5 companies
- 2024$218.87 · 10 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $147.25 | 9 |
| Exact Sciences Corporation | $29.40 | 1 |
| Abiomed | $28.39 | 1 |
| Pfizer Inc. | $24.28 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $22.22 | 1 |
What the 2025 payments were for
- Food and Beverage$251.54 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 family medicine physicians in Carson · All family medicine physicians in California