Isabella Yumi Chai, PMHNP-BC

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

95011968 Issued in CA

Practice address

2008 N Garey Ave
Pomona, CA 91767-2722

Phone

(909) 623-6131

Fax

(909) 865-9281

NPI assigned

Jul 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 CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Tri-City Mental Health AuthorityGroup PAC ID 6002710506, 13 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ichai1259386@direct.llu.edu

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.

• Tri-City Mental Health Authority

  • Community/Behavioral Health Agency
  • Pomona, CA
  • NPI 1346304920
  Medicare reassignment Care Compare group NPD
• Faculty Physicians and Surgeons of Llusm

  • Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
  • Apple Valley, CA
  • NPI 1205009917
  Medicare reassignment NPD
• Faculty Physicians and Surgeons of Llusm

  • Pediatrics Physician
  • Redlands, CA
  • NPI 1235189911
  NPD
• Faculty Physicians and Surgeons of Llusm

  • Family Medicine Physician
  • Moreno Valley, CA
  • NPI 1558788331
  NPD
• Health Service Alliance

  dba Palm Desert Community Health Center

  • Family Medicine Physician
  • Palm Desert, CA
  • NPI 1568197408
  NPD (past)
• Tri-City Mental Health Center

  • Case Management Agency
  • Pomona, CA
  • NPI 1255651501
  NPD (past)

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

{
    "created_epoch": "1563494400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767657600000",
    "number": "1336792209",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2008 N GAREY AVE",
            "city": "POMONA",
            "state": "CA",
            "postal_code": "917672722",
            "telephone_number": "909-623-6131",
            "fax_number": "909-865-9281"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2008 N GAREY AVE",
            "city": "POMONA",
            "state": "CA",
            "postal_code": "917672722",
            "telephone_number": "909-623-6131",
            "fax_number": "909-865-9281"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAI",
        "first_name": "ISABELLA",
        "middle_name": "YUMI",
        "credential": "PMHNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-07-19",
        "last_updated": "2026-01-06",
        "certification_date": "2026-01-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "CA",
            "license": "95011968",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ed Cha
• Diana Stacy Chacon, M.A. BCBA
• Jocelyn Chacon
• Veronica Elizabeth Chacon
• Jennifer Chahine
• Christina Michelle Chakar
• Christopher A Chalian, M.D.
• Champion Medical Group, a Medical Corporation
• Emmanuel Chan
• Francis Lok Shan Chan, DPM

• Psychiatric/Mental Health Nurse Practitioner in Pomona, CA
• Providers in Pomona, CA by specialty
• Psychiatric/Mental Health Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 6, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.