Quick answers
- Where does Mack D. Toyama see patients?
- Medicare's clinician data lists 2 practice locations, including Oxnard, CA. Call before your visit to confirm the address.
- What is Mack D. Toyama's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mack D. Toyama accept Medicare assignment?
- Yes. Medicare's clinician data says Mack D. Toyama accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mack D. Toyama?
- (805) 988-2273, as listed in official Medicare / NPI Registry data.
- What is Mack D. Toyama's NPI number?
- 1740235639. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mack D. Toyama is enrolled with Medicare (CMS data updated 2026-10-02).
- 1901 Holser WalkOxnard, CA 93036 (805) 988‑2273
- 1901 Holser Walk, Suite 315Oxnard, CA 93036 (805) 988‑2273
Group practices
Medicare enrollment lists Mack D. Toyama as a member of this group (CMS data updated 2026-10-02).
- Building Better Lives Occupational Medical Services Inc3 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Oxnard
Clinicians with the same Medicare primary specialty in Oxnard, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740235639 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians