Robert Frederick Warburton, ARNP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

95012975 Issued in CA

Practice address

250 W Main St Ste 101
Tustin, CA 92780-7717

Phone

(714) 461-4121

Fax

(385) 900-1673

NPI assigned

Nov 5, 2018

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Medicare fee-for-service enrollment

Enrolled in WA, AZ, CA3 enrollments

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 3

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

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.

• Grow Healthcare Group PC

  • Mental Health Counselor
  • San Jose, CA
  • NPI 1154994846

  Psychiatric/Mental Health

  Medicare reassignment NPD
• Grow Healthcare Group PA

  • Mental Health Counselor
  • Miami, FL
  • NPI 1245845932

  AZ, Psychiatric/Mental Health, WA

  Medicare reassignment NPD
• Columbia Anesthesia Services, LLC

  • Certified Registered Nurse Anesthetist
  • Tampa, FL
  • NPI 1053485698
  NPD (past)

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

{
    "created_epoch": "1541376000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763078400000",
    "number": "1477021764",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "250 W MAIN ST STE 101",
            "city": "TUSTIN",
            "state": "CA",
            "postal_code": "927807717",
            "telephone_number": "714-461-4121",
            "fax_number": "385-900-1673"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "250 W MAIN ST STE 101",
            "city": "TUSTIN",
            "state": "CA",
            "postal_code": "927807717",
            "telephone_number": "714-461-4121",
            "fax_number": "385-900-1673"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARBURTON",
        "first_name": "ROBERT",
        "middle_name": "FREDERICK",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-11-05",
        "last_updated": "2025-11-14",
        "certification_date": "2025-11-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "WA",
            "license": "61527591",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "AZ",
            "license": "294766",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "FL",
            "license": "ARNP9376910",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "9376910",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "CA",
            "license": "95012975",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Francis Wang
• Helen Wang
• Hsing-an Daisy Wang, BCBA
• Lisa Wang
• Susan Wang, FNP-BC
• John Bruce Warner, D.D.S.
• Marisa Kawata Watanabe, D.D.S.
• Sarah Waterkamp, D.C.
• Natsuko Watkins
• Leah Marie Watson, LVN

• Psychiatric/Mental Health Nurse Practitioner in Tustin, CA
• Providers in Tustin, 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 Nov 14, 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.