Sean Emerson Treacy, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A192958 Issued in CA

Practice address

757 Westwood PLZ Ste 1517
Los Angeles, CA 90095-1807

Phone

(310) 825-2111

NPI assigned

Apr 7, 2021

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA, TX2 enrollments

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 2

Specialty

Emergency Medicine

Education

Other, 2021

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Hospital & facility affiliations

• Santa Monica - UCLA Med Ctr & Orthopaedic Hospital Hospital, Santa Monica, CA, CCN 050112
• Chinle Comprehensive Health Care Facility Hospital, Chinle, AZ, CCN 030084

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: streacyabarca477986@direct.uclahealth.org

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.

• Emergency Physicians Associates San Jose PC

  • Emergency Medicine Physician
  • San Jose, CA
  • NPI 1306311576
  Medicare reassignment NPD
• Regents of the Univ of Ca Emer Med

  • Emergency Medicine Physician
  • Los Angeles, CA
  • NPI 1104889138
  Medicare reassignment NPD
• DHHS PHS Naihs Chinle Comprehensive Health Care Facility

  • General Acute Care Hospital
  • Chinle, AZ
  • NPI 1508800129

  TX

  Medicare reassignment NPD
• DHHS PHS Naihs Chinle Comprehensive

  • Ambulatory Surgical Clinic/Center
  • Chinle, AZ
  • NPI 1922253129
  NPD
• DHHS PHS Naihs Chinle Comprehensive Health Care Facility

  • General Acute Care Hospital
  • Tsaile, AZ
  • NPI 1538185715
  NPD
• UCLA Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1043427248

  Emergency Medicine

  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Regents of the Univ of California

  • General Acute Care Hospital
  • Santa Monica, CA
  • NPI 1427055839
  Care Compare affiliation

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

{
    "created_epoch": "1617753600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757030400000",
    "number": "1003495763",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "757 WESTWOOD PLZ STE 1517",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900951807",
            "telephone_number": "310-825-2111"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TREACY",
        "first_name": "SEAN",
        "middle_name": "EMERSON",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-07",
        "last_updated": "2025-09-05",
        "certification_date": "2025-09-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A192958",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mary Traylor, EDD, MSW
• Andre Traynham
• Anne P Traynor, NP
• TRC Treatment Center LLC
• Anahit Anula Trdatyan, PHARM.D.
• Michael Treanor, PH.D.
• Madeline Lorraine Treasure
• Treat Medical Inc
• Treatment Solutions Inc
• Silvana Tredinnick, DDS

• Emergency Medicine Physician in Los Angeles, CA
• Providers in Los Angeles, 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 Sep 5, 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.