Irene Hwang

Primary specialty

OptometristTaxonomy code 152W00000X

License

35456 Issued in CA

Practice address

5250 Ralston St
Ventura, CA 93003-7318

Phone

(805) 339-6400

NPI assigned

Apr 3, 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 CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.meditouchehr.com/api/fhir/r4/

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.

• Marshall B. Ketchum University

  • Optometrist
  • Anaheim, CA
  • NPI 1720101876
  Medicare reassignment NPD
• Marshall B. Ketchum University

  • Multi-Specialty Clinic/Center
  • Anaheim, CA
  • NPI 1174037493
  NPD
• Marshall B. Ketchum University/University Eye Center at Los Angeles

  • Optometrist
  • Los Angeles, CA
  • NPI 1558467225
  NPD

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

{
    "created_epoch": "1680480000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1356046049",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5250 RALSTON ST",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930037318",
            "telephone_number": "805-339-6400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5250 RALSTON ST",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930037318",
            "telephone_number": "805-339-6400"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "351 E Temple St",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900123328",
            "country_code": "US",
            "telephone_number": "213-253-2677",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HWANG",
        "first_name": "IRENE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-04-03",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "35456",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ashley Hutchison
• Thatcher Thi Huynh, DO
• Trung Huynh, PHARMD
• Theodore Huzyk, M.D.
• Stephanie Marie Hwang Kroll, DDS
• Nathan Han Hwang, DO
• Rachel M Hymes, DDS
• Hyperbaric Centers of California, Inc.
• I Zak DDS Prof Dental Corp
• Berenice Ibarra

• Optometrist in Ventura, CA
• Providers in Ventura, CA by specialty
• Optometrist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.