Curtis Siu MD Inc

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Legal business name

CURTIS SIU MD INC

Practice address

23521 Paseo de Valencia Ste 108
Laguna Hills, CA 92653-3137

Phone

(949) 588-7262

Fax

(949) 588-2167

NPI assigned

Apr 13, 2026

Organization subpart

No

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

Authorized official

Name

Curtis Siu, MDNPI 1386613081

Title

President

Phone

(949) 872-5227

Specialties & licenses 1

Addresses

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Curtis W Siu, MD

  • Internal Medicine Physician
  • Laguna Hills, CA
  • NPI 1386613081
  NPD Authorized official

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

{
    "created_epoch": "1776038400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1777593600000",
    "number": "1316880586",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "23521 PASEO DE VALENCIA STE 108",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533137",
            "telephone_number": "949-872-5227",
            "fax_number": "949-588-2167"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "23521 PASEO DE VALENCIA STE 108",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533137",
            "telephone_number": "949-588-7262",
            "fax_number": "949-588-2167"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "CURTIS SIU MD INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-04-13",
        "last_updated": "2026-05-01",
        "certification_date": "2026-05-01",
        "status": "A",
        "authorized_official_last_name": "SIU",
        "authorized_official_first_name": "CURTIS",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "949-872-5227",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Curenta LLC
• Curenta LLC
• Robert Charles Curreri, DDS
• Rumi Rose Currie, MASSAGE THERAPIST
• Curtis Joung Inc
• Thea Curtis
• Custom Healthcare Compounding Pharmacy
• Alysa Cutler
• Mark Cymerint, D.C.
• Ali Dabestani, M.D.

• Internal Medicine Physician in Laguna Hills, CA
• Providers in Laguna Hills, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.