Winson Ong Od in Antioch, CA
This organization bills under NPI 1770130932, an organization record issued on Aug 22, 2019 with the primary taxonomy Optometrist. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1770130932
- Legal name
- Winson Ong Od
- Entity
- Type 2 · organization
- Primary taxonomy
- Optometrist 152W00000X
- Practice location
- 5109 LONE TREE WAY, Antioch, CA 94531
- Phone
- 925-757-5560
- Enumerated
- Aug 22, 2019
- Record updated
- Jul 8, 2020
- Authorized official
- Ceo (title as filed)
3 clinicians CMS lists with Winson Ong Od in Antioch
- Estella BowlsbyOptometrist1508296633
- Mary Leong, ODOptometrist1003968249
- Winson Ong, ODOptometrist1821132143
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.