Individual provider Active NPI

Ellin Ying-Chun Wu, O.D.

  • Corneal and Contact Management Optometrist
  • Sunnyvale, CA
National Provider Identifier
1063660660
Registry record updated Aug 30, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Corneal and Contact Management OptometristTaxonomy code 152WC0802X
License
OPT13544 Issued in CA
Practice address
1085 W El Camino Real
Sunnyvale, CA 94087-1030
Phone
(408) 524-5900
Fax
(408) 524-5950
NPI assigned
Sep 8, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 30, 2021

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Corneal and Contact Management Optometrist 152WC0802X OPT13544 CA Primary

Addresses

Primary practice location

1085 W El Camino Real
Sunnyvale, CA 94087-1030

Mailing address

1085 W El Camino Real
Sunnyvale, CA 94087-1030
Phone (408) 524-5900

Other practice location 1

770 Scott Blvd
Santa Clara, CA 95050-6927
Phone (408) 296-0511

Other practice location 2

130 S Sunnyvale Ave
Sunnyvale, CA 94086
Phone (408) 736-3802

Other identifiers 1

IdentifierTypeStateIssuer
OPT13544MedicaidCA

Other names 1

  • Ying-Chun Ellin Chen Former name

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
I20081112000783 CA Practitioner - Optometry 3971662438 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Optometry
Education
University of California - School of Optometry, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sutter Bay Medical FoundationGroup PAC ID 4284538778, 3,783 clinicians

Practice addresses (Care Compare)

1085 W El Camino Real
Sunnyvale, CA 94087-1030
Phone (408) 524-5900

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
OPT13544CAMDCorneal and Contact Management Optometrist

Practice roles

OrganizationSpecialtyStatusNew patients
Silicon Valley Eyecare Optometry and Contact Lenses CurrentSince May 11, 2012 Accepting new patients
Sutter Bay Medical Foundation CurrentSince Aug 23, 2021 Accepting new patients
Sutter Bay Medical Foundation CurrentSince Aug 23, 2021 Accepting new patients
Sutter East Bay Medical Foundation Past Accepting new patients
Through the Hayes Optometry Inc PastSince Jul 13, 2025 Accepting new patients
Dr. Gary Gold & Associates Optometry PastSince Jan 1, 2016 Accepting new patients

Locations

18400 US Highway 18
Apple Valley, CA 92307
Phone (760) 810-7590

1950 University Ave
Ste 160
East Palo Alto, CA 94303
Phone (650) 317-8100

3200 Kearney St
Fremont, CA 94538
Phone (510) 498-2800

1189 E Herndon Ave
Ste 103
Fresno, CA 93720
Phone (559) 450-7777

370 Distel Cir
Los Altos, CA 94022
Phone (650) 254-5200

325 Distel Cir
Los Altos, CA 94022
Phone (510) 204-3977

600 Coffee Rd
Modesto, CA 95355
Phone (209) 550-4755

101 Rowland Way
Ste 220
Novato, CA 94945
Phone (415) 878-7200

795 El Camino Real
Palo Alto, CA 94301
Phone (650) 324-1832

151 N Sunrise Ave
Ste 1205
Roseville, CA 95661
Phone (916) 789-1505

3838 California St
Rm 410
San Francisco, CA 94118
Phone (415) 751-1847

123 S San Mateo Dr
San Mateo, CA 94401
Phone (650) 343-4200

770 Scott Blvd
Santa Clara, CA 95050
Phone (408) 296-0511

3883 Airway Dr
Ste 220
Santa Rosa, CA 95403
Phone (707) 521-7750

10200 Trinity Pkwy
Ste 101
Stockton, CA 95219
Phone (209) 323-3488

550 S Green Valley Rd
Watsonville, CA 95076
Phone (831) 458-5865

Interoperability endpoints

  • Direct secure messaging: ewu240871@hisp.ehr.sutterhealth.org

Organizations & group practices 6

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": "1220832000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1630281600000",
    "number": "1063660660",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1085 W EL CAMINO REAL",
            "city": "SUNNYVALE",
            "state": "CA",
            "postal_code": "940871030",
            "telephone_number": "408-524-5900",
            "fax_number": "408-524-5950"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1085 W EL CAMINO REAL",
            "city": "SUNNYVALE",
            "state": "CA",
            "postal_code": "940871030",
            "telephone_number": "408-524-5900",
            "fax_number": "408-524-5950"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "770 Scott Blvd",
            "address_purpose": "LOCATION",
            "city": "Santa Clara",
            "state": "CA",
            "postal_code": "950506927",
            "country_code": "US",
            "telephone_number": "408-296-0511",
            "fax_number": "408-296-1647",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "130 S Sunnyvale Ave",
            "address_purpose": "LOCATION",
            "city": "Sunnyvale",
            "state": "CA",
            "postal_code": "94086",
            "country_code": "US",
            "telephone_number": "408-736-3802",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WU",
        "first_name": "ELLIN",
        "middle_name": "YING-CHUN",
        "credential": "O.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-09-08",
        "last_updated": "2021-08-30",
        "certification_date": "2021-08-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152WC0802X",
            "taxonomy_group": "",
            "desc": "Optometrist, Corneal and Contact Management",
            "state": "CA",
            "license": "OPT13544",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "OPT13544",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "YING-CHUN",
            "last_name": "CHEN",
            "middle_name": "ELLIN",
            "credential": "O.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Sunnyvale, CA

Sources for this page

Verify at the official NPI Registry.