California Neurodiagnostics, LLC

Primary specialty

Physiological LaboratoryTaxonomy code 293D00000X

Legal business name

CALIFORNIA NEURODIAGNOSTICS, LLC

Doing business as

Stratus

Practice address

1999 Harrison St FL 18
Oakland, CA 94612-3520

Phone

(510) 496-4570

Fax

(866) 279-4704

NPI assigned

Jun 3, 2016

Organization subpart

Yes

Parent organization

ALLIANCE FAMILY OF COMPANIES, LLCAs reported in NPPES

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

Authorized official

Name

Charles Alvarez

Title

Ceo

Phone

(469) 995-8416

Specialties & licenses 3

Addresses

Other names 1

• Stratus Doing business as

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Robert C Knowlton, MD

  • Neurology Physician
  • Houston, TX
  • NPI 1144257601
  NPD

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

{
    "created_epoch": "1464912000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1777420800000",
    "number": "1932558608",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "600 LAS COLINAS BLVD E STE 2000",
            "city": "IRVING",
            "state": "TX",
            "postal_code": "750395607",
            "telephone_number": "469-995-8416"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1999 HARRISON ST FL 18",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946123520",
            "telephone_number": "510-496-4570",
            "fax_number": "866-279-4704"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "CALIFORNIA NEURODIAGNOSTICS, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "ALLIANCE FAMILY OF COMPANIES, LLC",
        "enumeration_date": "2016-06-03",
        "last_updated": "2026-04-29",
        "certification_date": "2026-04-29",
        "status": "A",
        "authorized_official_last_name": "ALVAREZ",
        "authorized_official_first_name": "CHARLES",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "469-995-8416"
    },
    "taxonomies": [
        {
            "code": "261Q00000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "261QS1200X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Sleep Disorder Diagnostic",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "293D00000X",
            "taxonomy_group": "",
            "desc": "Physiological Laboratory",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Stratus",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Amanda W. Calhoun, MD
• Nancy Calhoun
• Patrice Calhoun
• California Education and Prevention Project
• California Endocurietherapy Medical Corporation
• California Pacific Medical Group, Inc. (Brown & Toland Medical Group)
• California Psychiatric Specialists
• California Sports and Orthopaedic
• California Virtual Academies
• California-Nevada Methodist Homes (Lake Park Retirement Residence)

• Physiological Laboratory in Oakland, CA
• Providers in Oakland, CA by specialty
• Physiological Laboratory in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 29, 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.