Individual provider Active NPI

Winson Ong, O.D.

  • Optometrist
  • Brentwood, CA
National Provider Identifier
1821132143
Registry record updated Jul 28, 2014
On this page

Key facts

NPPES NPI Registry
Primary specialty
OptometristTaxonomy code 152W00000X
License
11938T Issued in CA
Practice address
3840 Balfour Rd
Suite a
Brentwood, CA 94513-1641
Phone
(925) 513-0323
NPI assigned
Feb 19, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 28, 2014

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Optometrist 152W00000X 11938T CA Primary

Addresses

Primary practice location

3840 Balfour Rd
Suite a
Brentwood, CA 94513-1641

Mailing address

3840 Balfour Rd
Suite a
Brentwood, CA 94513-1641
Phone (925) 513-0323

Other identifiers 1

IdentifierTypeStateIssuer
SD0119381MedicaidCA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: No
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20051104000506 CA Practitioner - Optometry 0648298943 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Optometry
Education
University of California - School of Optometry, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Balfour Vision Optix Optometry IncGroup PAC ID 3375707276, 3 clinicians
Winson Ong ODGroup PAC ID 8820421993, 3 clinicians

Practice addresses (Care Compare)

3840 Balfour Rd
A
Brentwood, CA 94513-1641
Phone (925) 513-0323

5109 Lone Tree Way
Antioch, CA 94531-8484
Phone (925) 757-5577

6500 Dublin Blvd
Suite F
Dublin, CA 94568-3151
Phone (925) 828-7730

Procedures performed for Medicare patients

ProcedureNumber of procedures
Cataract surgery1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
11938CAMDClinical Social Worker
11938TCAMDOptometrist

Practice roles

OrganizationSpecialtyStatusNew patients
Diamond Valley Optometry Optometrist CurrentSince Sep 29, 2024 Accepting new patients
Regents of the University of California at Berkeley Optometrist CurrentSince May 28, 2025 Accepting new patients
Winson Ong OD Optometrist CurrentSince Oct 5, 2019 Accepting new patients
Stephanie Veilleux OD & Winson Ong OD Optometrist CurrentSince Feb 6, 2023 Accepting new patients
Balfour Vision Optix Optometry, Inc. Optometrist CurrentSince Apr 23, 2012 Accepting new patients

Locations

5109 Lone Tree Way
Antioch, CA 94531
Phone (925) 757-5560

200 Minor Hall
Ste 384A
Berkeley, CA 94720
Phone (510) 642-7844

3840 Balfour Rd
#A
Brentwood, CA 94513
Phone (925) 513-0323

4550 Balfour Rd
Ste A
Brentwood, CA 94513
Phone (925) 513-0323

6500 Dublin Blvd
Ste F
Dublin, CA 94568
Phone (925) 828-7730

1553 Palos Verdes Mall
Walnut Creek, CA 94597
Phone (925) 934-9328

Interoperability endpoints

  • Direct secure messaging: wong348932@direct-ucsfmedicalcenter.org

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1171843200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1406505600000",
    "number": "1821132143",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3840 BALFOUR RD",
            "address_2": "SUITE A",
            "city": "BRENTWOOD",
            "state": "CA",
            "postal_code": "945131641",
            "telephone_number": "925-513-0323"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3840 BALFOUR RD",
            "address_2": "SUITE A",
            "city": "BRENTWOOD",
            "state": "CA",
            "postal_code": "945131641",
            "telephone_number": "925-513-0323"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ONG",
        "first_name": "WINSON",
        "credential": "O.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-19",
        "last_updated": "2014-07-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "11938T",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "SD0119381",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Brentwood, CA

Sources for this page

Verify at the official NPI Registry.