Karen H Chao, O.D.

Primary specialty

OptometristTaxonomy code 152W00000X

License

OPT 10301 TPA Issued in CA

Practice address

121 S del Mar Ave
Suite a
San Gabriel, CA 91776-1345

Phone

(626) 287-0401

Fax

(626) 287-1457

NPI assigned

Jun 20, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

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

Specialty

Optometry

Education

Southern California College of Optometry, 1994

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Sixth Optometric Care of California PCGroup PAC ID 1153804562, 9 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Karen H. Chao, O.D., Inc.

  • Optometrist
  • San Gabriel, CA
  • NPI 1639148539
  Medicare reassignment NPD Authorized official
• Sixth Optometric Care of California PC

  • Optometrist
  • San Jose, CA
  • NPI 1447120928
  Medicare reassignment Care Compare group
• Sixth Optometric Care of California PC

  • Optometrist
  • San Gabriel, CA
  • NPI 1831042910
  NPD

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

{
    "created_epoch": "1150761600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789344000000",
    "number": "1013953108",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "121 S DEL MAR AVE STE A",
            "city": "SAN GABRIEL",
            "state": "CA",
            "postal_code": "917761345",
            "telephone_number": "626-287-0401",
            "fax_number": "626-313-1901"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "121 S DEL MAR AVE",
            "address_2": "SUITE A",
            "city": "SAN GABRIEL",
            "state": "CA",
            "postal_code": "917761345",
            "telephone_number": "626-287-0401",
            "fax_number": "626-287-1457"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAO",
        "first_name": "KAREN",
        "middle_name": "H",
        "name_prefix": "Dr.",
        "credential": "O.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-20",
        "last_updated": "2026-09-14",
        "certification_date": "2026-09-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "OPT 10301 TPA",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "SD0103010",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• William Chang, OD
• Ying-Yi Chang, D.D.S., M.S.
• Yueh-Cheau Grace Changchien, R.PH
• Diana Chao, MD
• Fu Li Chao, M.D.
• Chaoshan Medical Center
• Philip L Chatham, M.D.
• Richa Chaturvedi
• Claudia Nhu Chau, RPH
• Anthony J. Cheing, D.D.S.

• Optometrist in San Gabriel, CA
• Providers in San Gabriel, CA by specialty
• Optometrist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 14, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.