Mack David Toyama, DC, PA-C
NPI 1740235639ActiveIndividual· Chiropractor· Oxnard, CA
Chiropractor (DC, PA-C) in Oxnard, California, trained at University of California, Davis School of Medicine (class of 2003). Part D covered 191 prescriptions written in 2024, 79% of them generic. Seqirus USA Inc was the largest of 2 companies reporting payments in 2025, $41.05 in all, mostly food and beverage.
Overview
| NPI | 1740235639 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DC, PA-C |
| Sole proprietor | Yes |
| NPI issued | May 23, 2006 |
| Last updated in NPPES | Feb 21, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Chiropractor Primary | 111N00000X | DC22187 | CA |
| Technician, Other | 247200000X | RHC137145 | CA |
| Physician Assistant | 363A00000X | PA17044 | 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 - Chiropractic (CA); Practitioner - Physician Assistant (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 191 · 394 30-day fills |
|---|---|
| Patients | 35 |
| Total drug cost | $28,660 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Physician Assistant |
Medical group
- Building Better Lives Occupational Medical Services IncOxnard, CA · 3 clinicians
Industry payments (Open Payments)
- 2025$41.05 · 2 payments from 2 companies
- 2024$132.96 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Seqirus USA Inc | $25.10 | 1 |
| Merck Sharp & Dohme LLC | $15.95 | 1 |
What the 2025 payments were for
- Food and Beverage$41.05 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 53 chiropractors in Oxnard · All chiropractors in California