Frontline Healthcare-Endocrinology Professional Corporation

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

Legal business name

FRONTLINE HEALTHCARE-ENDOCRINOLOGY PROFESSIONAL CORPORATION

Practice address

555 Marin St Ste 120
Thousand Oaks, CA 91360-4102

Phone

(805) 449-1111

NPI assigned

Feb 17, 2026

Last updated

May 14, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Fungwah Chris Ruiz, RN

Title

Administrator

Phone

(805) 449-1111

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Tax ID family

Frontline Healthcare Endocrinology LLC2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• Frontline Healthcare Endocrinology LLC

  • Endocrinology, Diabetes & Metabolism Physician
  • Thousand Oaks, CA
  • NPI 1538055066
  NPD tax ID

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Karen Kim, M.D.

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1548231764
  Medicare reassignment NPD (past)

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

{
    "created_epoch": "1771286400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1778716800000",
    "number": "1598618787",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "555 MARIN ST STE 120",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "913604102",
            "telephone_number": "805-449-1111"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "555 MARIN ST STE 120",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "913604102",
            "telephone_number": "805-449-1111"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "FRONTLINE HEALTHCARE-ENDOCRINOLOGY PROFESSIONAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-02-17",
        "last_updated": "2026-05-14",
        "certification_date": "2026-05-14",
        "status": "A",
        "authorized_official_last_name": "RUIZ",
        "authorized_official_first_name": "FUNGWAH",
        "authorized_official_middle_name": "CHRIS",
        "authorized_official_title_or_position": "ADMINISTRATOR",
        "authorized_official_telephone_number": "805-449-1111",
        "authorized_official_credential": "RN"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lindsay Mae Frieder, RD
• Paulina Friedl, NONE
• Joel Lloyd Friedman, DO
• Frontline Healthcare 3, Professional Corporation
• Frontline Healthcare Endocrinology LLC
• Philip Kent Frykman, M.D.
• Rouxann Tomiko Fujimoto, PHARM.D.
• Full Care Homehealth, Inc
• Full Care Hospice and Palliative Care Inc
• Sarah B Fultz

• Endocrinology, Diabetes & Metabolism Physician in Thousand Oaks, CA
• Providers in Thousand Oaks, CA by specialty
• Endocrinology, Diabetes & Metabolism Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 14, 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.