Mercedes Dayan

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

W0555 Issued in TX

Practice address

1500 Red River St FL 2
Austin, TX 78701-1918

Phone

(512) 495-5555

NPI assigned

Apr 24, 2023

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

Enrolled in TX

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.

Enrollment records 1

Specialty

Emergency Medicine

Education

Other, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Cec Lakeway Urgent Care Physicians PLLC

  • Urgent Care Clinic/Center
  • Lakeway, TX
  • NPI 1285088161
  Medicare reassignment NPD

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

{
    "created_epoch": "1682294400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764806400000",
    "number": "1902593437",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1501 RED RIVER ST FL 2",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787121845",
            "telephone_number": "512-495-5555"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 RED RIVER ST FL 2",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787011918",
            "telephone_number": "512-495-5555"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DAYAN",
        "first_name": "MERCEDES",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-04-24",
        "last_updated": "2025-12-04",
        "certification_date": "2025-12-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "BP10083799",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "W0555",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Patrick Emerson Day, MD
• Savannah Kay Day
• Kimberlee Dayal, NP
• Melani Inoka Dayal, ACNS-BC
• Anitha Dayalan, MD
• Daybreak Associates PLLC
• Daylight Dental, PLLC
• Leah Marie Dayton
• DC Elite Transport
• DDB Wellness Center PLLC

• Emergency Medicine Physician in Austin, TX
• Providers in Austin, TX by specialty
• Emergency Medicine Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 4, 2025; 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.