Sonja Irene Fontana, DNP, FNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

11610 Issued in CA

Practice address

1011 N. Demaree St.
Visalia, CA 93291-5156

Phone

(559) 734-6700

Fax

(559) 734-6705

NPI assigned

Aug 31, 2007

Sex

Female

Sole proprietor

No

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

Specialties & licenses 4

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

Medicare enrollment (NPD)

Enrolled

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.

• Oakview Medical Group a Medical Corporation

  dba Oakview Medical Group

  • Family Medicine Physician
  • Visalia, CA
  • NPI 1033442942
  NPD

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

{
    "created_epoch": "1188518400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784592000000",
    "number": "1326232455",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1011 N. DEMAREE ST",
            "city": "VISALIA",
            "state": "CA",
            "postal_code": "932915156",
            "telephone_number": "559-734-6700",
            "fax_number": "559-734-6705"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1011 N. DEMAREE ST.",
            "city": "VISALIA",
            "state": "CA",
            "postal_code": "932915156",
            "telephone_number": "559-734-6700",
            "fax_number": "559-734-6705"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FONTANA",
        "first_name": "SONJA",
        "middle_name": "IRENE",
        "name_prefix": "Ms.",
        "credential": "DNP, FNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-08-31",
        "last_updated": "2026-07-21",
        "certification_date": "2026-07-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "11610",
            "primary": false
        },
        {
            "code": "163WG0000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, General Practice",
            "state": "CA",
            "license": "450325",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "11610",
            "primary": true
        },
        {
            "code": "364SF0001X",
            "taxonomy_group": "",
            "desc": "Clinical Nurse Specialist, Family Health",
            "state": "CA",
            "license": "450325",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Anissa R Florez-Ontiveros
• Adam G Fogel, PHD
• Jonathan Michael Fogel, PHD
• Emilia Foley
• David Alexander Fong, LMFT
• Destiny Renee Loraine Ford
• Joseph Ford, D.O.
• Julia A Ford, M.D.
• Tahlia Ford, RN
• Brandon Foster, PH.D.

• Family Nurse Practitioner in Visalia, CA
• Providers in Visalia, CA by specialty
• Family Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 21, 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.