Darin Chambers, M.D.
NPI 1316108053ActiveIndividual· Family Medicine· Oxnard, CA
Family Medicine (M.D.) in Oxnard, California, trained at University of California, Davis School of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $801,580 for 4,470 claims, against $5,002 paid for services in 2024. Ucb, Inc. was the largest of 5 companies reporting payments in 2025, $97.84 in all, mostly food and beverage.
Overview
| NPI | 1316108053 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 24, 2008 |
| Last updated in NPPES | Jul 10, 2023 |
| Certified by provider | Jul 10, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A107109 | 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 | 57 |
|---|---|
| Services billed | 184 across 37 procedure codes |
| Paid by Medicare | $5,002 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,470 · 8,871 30-day fills |
|---|---|
| Patients | 233 |
| Total drug cost | $801,580 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Family Practice |
Medical group
- County of VenturaVentura, CA · 344 clinicians
Hospital affiliations
- St Johns Regional Medical CenterOxnard, CA
- Ventura County Medical CenterVentura, CA
Other facilities
- Los Robles HealthcareHome health agency · Thousand Oaks, CA
Industry payments (Open Payments)
- 2025$97.84 · 5 payments from 5 companies
- 2024$96.30 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ucb, Inc. | $23.67 | 1 |
| Abbvie Inc. | $22.57 | 1 |
| Kowa Pharmaceuticals America, Inc. | $18.02 | 1 |
| Smith+nephew, Inc. | $17.63 | 1 |
| Janssen Biotech, Inc. | $15.95 | 1 |
What the 2025 payments were for
- Food and Beverage$97.84 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 92 family medicine physicians in Oxnard · All family medicine physicians in California