Matthew Altheide, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA64114 Issued in CA

Practice address

4300 Central Ave
Riverside, CA 92506-2918

Phone

(951) 222-2208

NPI assigned

Mar 14, 2024

Last updated

Nov 30, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1710374400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764460800000",
    "number": "1659130490",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4300 CENTRAL AVE",
            "city": "RIVERSIDE",
            "state": "CA",
            "postal_code": "925062918",
            "telephone_number": "951-222-2208"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4300 CENTRAL AVE",
            "city": "RIVERSIDE",
            "state": "CA",
            "postal_code": "925062918",
            "telephone_number": "951-222-2208"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALTHEIDE",
        "first_name": "MATTHEW",
        "name_prefix": "Mr.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-03-14",
        "last_updated": "2025-11-30",
        "certification_date": "2025-11-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "PA64114",
            "primary": true
        },
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "CA",
            "license": "PA64114",
            "primary": false
        },
        {
            "code": "146N00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medical Technician, Basic",
            "state": "CA",
            "license": "E018059",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• John Alsop
• Rashid Altafi, M.D.
• Altais Medical Group - Riverside, Inc.
• Jamie Isabel Altamirano Castillo
• Alternatives to Domestic Violence
• Jeffrey James Altizer, RN, CRNA
• Jozar Altura
• Ahmad M. Alturjuman, M.D., F.A.C.C.
• Joseph Alukal, M.D.
• Britany Ann Amy Alva, MA, LMFT

• Physician Assistant in Riverside, CA
• Providers in Riverside, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 30, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.