Krystianna Nguyen, PH. D.

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

33667 Issued in CA

Practice address

500 N State College Blvd Ste 1100
Orange, CA 92868-1625

Phone

(949) 866-3392

NPI assigned

Jul 25, 2018

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

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.

• KT Psychology Group PC

  • Clinical Psychologist
  • Orange, CA
  • NPI 1093663668
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1532476800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773360000000",
    "number": "1922585793",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1691 MESA DR APT R09",
            "city": "NEWPORT BEACH",
            "state": "CA",
            "postal_code": "926600100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 N STATE COLLEGE BLVD STE 1100",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928681625",
            "telephone_number": "949-866-3392"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4000 MacArthur Blvd Ste 600",
            "address_purpose": "LOCATION",
            "city": "Newport Beach",
            "state": "CA",
            "postal_code": "926602517",
            "country_code": "US",
            "telephone_number": "714-758-5912",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "KRYSTIANNA",
        "credential": "PH. D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2018-07-25",
        "last_updated": "2026-03-13",
        "certification_date": "2026-03-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "33667",
            "primary": true
        },
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "CA",
            "license": "33667",
            "primary": false
        },
        {
            "code": "103TB0200X",
            "taxonomy_group": "",
            "desc": "Psychologist, Cognitive & Behavioral",
            "state": "CA",
            "license": "33667",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSED PSYCHOLOGIST",
            "identifier": "33667",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Kim Marie Nguyen, COTA
• Kim Thien Nguyen
• Kim-Anh Thi Nguyen, M.D.
• Kinh-Vy Nguyen, MD
• Kristie Thuy Tien Nguyen
• Lan Thi-Xuan Nguyen, MD
• Larry Nguyen
• Lawrence Nguyen, DO
• Leann Hoang Nguyen
• Lesley Nguyen

• Clinical Psychologist in Orange, CA
• Providers in Orange, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 13, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.