Darren M Brown Od Apc in Tustin, CA
This organization bills under NPI 1922055458, an organization record issued on May 30, 2006 with the primary taxonomy Corneal and Contact Management Optometrist. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1922055458
- Legal name
- Darren M Brown Od Apc
- Entity
- Type 2 · organization
- Primary taxonomy
- Corneal and Contact Management Optometrist 152WC0802X
- Practice location
- 190 EL CAMINO REAL, Tustin, CA 92780
- Phone
- 714-669-1121
- Enumerated
- May 30, 2006
- Record updated
- Mar 27, 2014
- Authorized official
- Owner (title as filed)
2 clinicians CMS lists with Darren M Brown Od Apc in Tustin
- Darren Brown, ODOptometrist1073562740
- Sarah Onaga, ODOptometrist1710417522
Source: CMS Doctors and Clinicians group affiliations, matched by practice name and city.
Checking an organization
- Confirm the business with the California secretary of state.
- Check the HHS-OIG exclusion list for the organization.
- Verify each clinician on their own record and the state license search.
Common questions
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.