Monica Tsai

Primary specialty

Allergy & Immunology (Internal Medicine) PhysicianTaxonomy code 207RA0201X

License

A142506 Issued in CA

Practice address

101 The City Dr S
Orange, CA 92868-3201

Phone

(714) 456-8888

NPI assigned

May 13, 2014

Last updated

Jan 16, 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

Electronic endpoints 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: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

University of California, Geffen School of Medicine, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

UC RegentsGroup PAC ID 7416869516, 316 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• UC Regents

  dba UCI Department of Medicine

  • Infectious Disease Physician
  • Orange, CA
  • NPI 1760430847
  Medicare reassignment Care Compare group NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Baldwin Park, CA
  • NPI 1770515280
  Medicare reassignment NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Los Angeles, CA
  • NPI 1043242563
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Santa Clarita, CA
  • NPI 1316409410
  NPD
• UC Regents

  dba UCI Department of Medicine

  • Allergy & Immunology (Internal Medicine) Physician
  • Orange, CA
  • NPI 1003864174
  NPD
• UC Regents

  dba UCI Department of Medicine

  • Pulmonary Disease Physician
  • Orange, CA
  • NPI 1629026729
  NPD
• UC Irvine Health- Newport Doctors Medical Group- Radiology

  • Medical Specialty Clinic/Center
  • Newport Beach, CA
  • NPI 1255796157
  NPD (past)
• UC Regents

  dba UCI Department of Medicine

  • Internal Medicine Physician
  • Orange, CA
  • NPI 1205884392
  NPD (past)

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

• University of California Irvine

  dba University of California Irvine - Cac Urgent Care

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  dba Uci Health

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1399939200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768521600000",
    "number": "1598176497",
    "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": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-8888"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1245 16th St Ste 303",
            "address_purpose": "LOCATION",
            "city": "Santa Monica",
            "state": "CA",
            "postal_code": "904041265",
            "country_code": "US",
            "telephone_number": "310-481-4646",
            "fax_number": "310-899-7599",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3500 Lomita Blvd Ste 300",
            "address_purpose": "LOCATION",
            "city": "Torrance",
            "state": "CA",
            "postal_code": "905055038",
            "country_code": "US",
            "telephone_number": "310-257-0028",
            "fax_number": "310-227-0031",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TSAI",
        "first_name": "MONICA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-05-13",
        "last_updated": "2026-01-16",
        "certification_date": "2026-01-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A142506",
            "primary": false
        },
        {
            "code": "207RA0201X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Allergy & Immunology",
            "state": "CA",
            "license": "A142506",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq",
            "affiliation": "Y",
            "endpointDescription": "Carequality",
            "affiliationName": "Southern California Permanente Medical Group",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "6041 Cadillac Ave",
            "city": "Los Angeles",
            "state": "CA",
            "country_code": "US",
            "postal_code": "900341702",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• An-CHI Tsai
• Chloe Lainey Tsai
• Fong Y Tsai, MD
• Irene Tsai, M.D.
• Jerry F Tsai, M.D.
• Nathaniel Jen-Sung Tsai
• Tsung-Lin Tsai
• Derek Tsao
• Trevor Tsay, MD
• Daniel Tse

• Allergy & Immunology (Internal Medicine) Physician in Orange, CA
• Providers in Orange, CA by specialty
• Allergy & Immunology (Internal Medicine) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 16, 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.