Katherine Hoa Diep-Kwei, PHARM.D.

Primary specialty

PharmacistTaxonomy code 183500000X

License

RPH45800 Issued in CA

Practice address

4200 Trabuco Rd Ste 190
Irvine, CA 92620-3659

Phone

(949) 861-3170

Fax

(949) 861-3179

NPI assigned

Dec 19, 2006

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other names 1

• Kate Hoa Diep Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Pharmacy

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 and National Provider Directory roles.

• Optimal Wellness Partners Corp

  • Clinic/Center
  • Irvine, CA
  • NPI 1477390102
  NPD Authorized official

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

{
    "created_epoch": "1166486400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749686400000",
    "number": "1053474056",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "38 TOWNSEND",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926203868",
            "telephone_number": "626-780-3537",
            "fax_number": "949-679-7859"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4200 TRABUCO RD STE 190",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926203659",
            "telephone_number": "949-861-3170",
            "fax_number": "949-861-3179"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIEP-KWEI",
        "first_name": "KATHERINE",
        "middle_name": "HOA",
        "name_prefix": "Dr.",
        "credential": "PHARM.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-12-19",
        "last_updated": "2025-06-12",
        "certification_date": "2025-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "183500000X",
            "taxonomy_group": "",
            "desc": "Pharmacist",
            "state": "CA",
            "license": "RPH45800",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "KATE",
            "last_name": "DIEP",
            "middle_name": "HOA",
            "credential": "PHARMD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Rebecca Diaz
• Susana Diaz
• Andrew Jason Didonato
• Jordyn Diebolt
• John Dieckhoff Jr., M.D.
• Duyen Diep
• Zoe Elena Dietz
• Nicholas Difley
• Digestive Disease Consultants of Orange County Inc
• Aisha Dilday, MS

• Pharmacist in Irvine, CA
• Providers in Irvine, CA by specialty
• Pharmacist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 2025; 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.