Robert James Wielenga, M.D.
NPI 1952469850ActiveIndividual· Family Medicine· Downey, CA
Family Medicine (M.D.) in Downey, California, licensed in CA, with an NPI issued in December 2006. Their prescriptions cost Medicare Part D more than their services did: $3,277,190 for 27,361 claims, against $96,930 paid for services in 2024. Radius Health, Inc. was the largest of 18 companies reporting payments in 2025, $870.15 in all, mostly food and beverage. Lists Pih Health Downey Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1952469850 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 4, 2006 |
| Last updated in NPPES | Feb 26, 2020 |
| Certified by provider | Feb 26, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G81044 | 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 | 250 |
|---|---|
| Services billed | 1,810 across 39 procedure codes |
| Paid by Medicare | $96,930 |
Part D prescriptions in 2024
| Prescriptions (claims) | 27,361 · 62,699 30-day fills |
|---|---|
| Patients | 1,369 |
| Total drug cost | $3,277,190 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Hospital affiliations
- Pih Health Downey HospitalDowney, CA
- Pih Health Hospital-WhittierWhittier, CA
Other facilities
- Advantageous Home Health Care, Inc.Home health agency · Studio City, CA
- Golden Touch Home Health, IncHome health agency · Los Angeles, CA
- Happy Visit Home HealthHome health agency · Los Angeles, CA
- Storm Home Health Care, IncHome health agency · Van Nuys, CA
- Healing Care Hospice, IncHospice · Downey, CA
- True Care Hospice Southern California, IncHospice · Canoga Park, CA
Industry payments (Open Payments)
- 2025$870.15 · 47 payments from 18 companies
- 2024$1,651 · 90 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Radius Health, Inc. | $192.51 | 15 |
| Lilly USA, LLC | $109.48 | 6 |
| Astrazeneca Pharmaceuticals LP | $93.36 | 4 |
| Sumitomo Pharma America, Inc. | $85.25 | 3 |
| Amgen Inc. | $69.24 | 3 |
What the 2025 payments were for
- Food and Beverage$870.15 · 47 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 80 family medicine physicians in Downey · All family medicine physicians in California