Leah Tsui, MS, RDN, LDN

Primary specialty

Registered DietitianTaxonomy code 133V00000X

Practice address

200 S Barrington Ave Unit 49870
Los Angeles, CA 90049-7837

Phone

(323) 457-8796

NPI assigned

Aug 19, 2019

Sex

Female

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 TX

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science

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.

• Leah Tsui Nutrition LLC Dba Limitless Nutrition

  • Registered Dietitian
  • Los Angeles, CA
  • NPI 1730030495

  Dietitian, Registered

  NPD Authorized official
• Ciba Health Inc.

  • Corporate Health Clinic/Center
  • New York, NY
  • NPI 1295313518

  TX

  Medicare reassignment

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

{
    "created_epoch": "1566172800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778112000000",
    "number": "1306493945",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 S BARRINGTON AVE UNIT 49870",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900497837",
            "telephone_number": "323-457-8796"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 S BARRINGTON AVE UNIT 49870",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900497837",
            "telephone_number": "323-457-8796"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TSUI",
        "first_name": "LEAH",
        "credential": "MS, RDN, LDN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-08-19",
        "last_updated": "2026-05-07",
        "certification_date": "2026-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "CA",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tomiko Tsuha-McNiel, A.C.S.W.
• Edmund Tsui, MD
• Irena Tsui, MD
• Jennifer Tsui
• John Tsui
• Timothy Tsui, M.D.
• William Tsui
• Nao Tina Tsukahara, M.A., CCC-SLP
• Michelle Masako Tsukamoto, D.O.
• Allison Tsukimura, LCSW

• Registered Dietitian in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Registered Dietitian in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.