Karen Xiao, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A207900 Issued in CA

Practice address

100 W California Blvd
Pasadena, CA 91105-3010

Phone

(855) 522-7898

NPI assigned

Apr 5, 2022

Last updated

Jul 7, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Specialty

Emergency Medicine

Education

Drexel University College of Medicine, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1649116800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1063153088",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 60259",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900600259",
            "telephone_number": "877-346-2211"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 W CALIFORNIA BLVD",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911053010",
            "telephone_number": "855-522-7898"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "450 Clarkson Ave",
            "address_purpose": "LOCATION",
            "city": "Brooklyn",
            "state": "NY",
            "postal_code": "112032012",
            "country_code": "US",
            "telephone_number": "718-270-1000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "XIAO",
        "first_name": "KAREN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-04-05",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A207900",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Robin Newell Wynslow, PHD
• Lori J. Wynstock, M.D.
• Wyse Willa Optometry, Inc. (Hollywood Vermont Optometrics)
• Xangari Institute
• Liz Xiang
• Yujue Xiao
• Jiuru Xie, LAC
• Xingu River Holdings LLC
• Gui Wen Xu, N.P.
• Mingda Xu, FNP-C

• Emergency Medicine Physician in Pasadena, CA
• Providers in Pasadena, CA by specialty
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 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.