Dr. Mack David Toyama, DC, PA-C
Dr. Mack David Toyama is a Chiropractor provider (Chiropractor) practicing in Oxnard, CA, registered in the NPPES registry with NPI 1740235639 since 2006. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1740235639 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mack David Toyama |
| Credential | DC, PA-C |
| Sex | Male |
| Practice address | Oxnard, CA, 93036 |
| Phone | 8059882273 |
| Fax | 8059818281 |
| Enumeration date | 2006-05-23 |
| Last updated in NPPES | 2011-02-21 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | DC22187 | CA |
| 247200000X | Other Technician | Secondary | RHC137145 | CA |
| 363A00000X | Physician Assistant | Secondary | PA17044 | CA |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| DC0221870 | Medicaid | CA | — |
Copy-ready billing details
Provider: Mack Toyama, DC, PA-C NPI: 1740235639 Taxonomy: 111N00000X (Chiropractor) Address: Oxnard, CA, 93036
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1770589707 | Robert Lum | Individual | Radiation Oncology Physician | Oxnard, CA |
| 1972586071 | Superior Mobility, Inc. | Organization | Customized Equipment (DME) | Oxnard, CA |
| 1689658064 | Anne Ireland-Gill | Individual | Specialist | Oxnard, CA |
| 1033163621 | Renewed Hope Radiation Oncology, Inc. | Organization | Radiation Oncology Clinic/Center | Oxnard, CA |
Verify this record
Cross-check NPI 1740235639 against the authoritative CMS record: view Dr. Mack David Toyama on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-02-21.