Individual provider Active NPI

Alexander Howard, DO

  • Addiction Medicine (Family Medicine) Physician
  • Ventura, CA
National Provider Identifier
1528707593
Registry record updated Nov 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction Medicine (Family Medicine) PhysicianTaxonomy code 207QA0401X
License
20A21641 Issued in CA
Practice address
300 Hillmont Ave BLDG 340
Ventura, CA 93003-1651
Phone
(805) 652-6228
NPI assigned
May 29, 2022
Last updated
Nov 17, 2025By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 17, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction Medicine (Family Medicine) Physician 207QA0401X 20A21641 CA Primary

Addresses

Primary practice location

300 Hillmont Ave BLDG 340
Ventura, CA 93003-1651

Mailing address

300 Hillmont Ave BLDG 340
Ventura, CA 93003-1651

Other practice location 1

1911 Williams Dr Ste C
Oxnard, CA 93036-2612
Phone (805) 981-9200

Other practice location 2

2150 N Victoria Ave
Oxnard, CA 93036-7791
Phone (805) 382-6296

Other practice location 3

3150 E Los Angeles Ave
Simi Valley, CA 93065-3940
Phone (805) 577-1724

Other identifiers 1

IdentifierTypeStateIssuer
95-60000944OtherCACOUNTY OF VENTURA

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address alexander.howard@ventura.cernerdirect.com Direct

Medicare participation

Medicare enrollment files
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: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250331002157 CA Practitioner - Family Practice 6103349170 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Rocky Vista University College of Osteopathic Med, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
County of VenturaGroup PAC ID 7911810171, 340 clinicians

Practice addresses (Care Compare)

125 W Thousand Oaks Blvd
Suite 500
Thousand Oaks, CA 91360-4402
Phone (805) 777-3500

1911 Williams Dr
Oxnard, CA 93036-2612

300 Hillmont Ave
Ventura, CA 93003-1651

3150 E Los Angeles Ave
Simi Valley, CA 93065-3940
Phone (805) 577-1724

4258 Telegraph Rd
Ventura, CA 93003-3706
Phone (805) 477-5700

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
21641CAMDGeneral Practice Dentistry
20A21641CAMDAddiction Medicine (Family Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
County of Ventura CurrentSince Jan 24, 2025 Accepting new patients
County of Ventura CurrentSince Jan 24, 2025 Accepting new patients
County of Ventura Single Specialty Current Accepting new patients
Healthright 360 Past Accepting new patients
County of Ventura PastSince Jun 4, 2023 Accepting new patients

Locations

1911 Williams Dr
Ste C
Oxnard, CA 93036
Phone (805) 981-9200

3150 E Los Angeles Ave
Simi Valley, CA 93065
Phone (805) 577-0830

200 Hillmont Ave
Ventura, CA 93003
Phone (805) 652-5755

300 Hillmont Ave
Ventura, CA 93003
Phone (805) 652-6000

300 Hillmont Ave
Bldg 340
Ventura, CA 93003
Phone (805) 652-6100

3147 Loma Vista Rd
Ventura, CA 93003
Phone (805) 652-5754

800 S Victoria Ave
#L4640
Ventura, CA 93009

Interoperability endpoints

  • Direct secure messaging: alexander.howard@ventura.cernerdirect.com

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1653782400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1528707593",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 HILLMONT AVE BLDG 340",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930031651"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 HILLMONT AVE BLDG 340",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930031651",
            "telephone_number": "805-652-6228"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1911 Williams Dr Ste C",
            "address_purpose": "LOCATION",
            "city": "Oxnard",
            "state": "CA",
            "postal_code": "930362612",
            "country_code": "US",
            "telephone_number": "805-981-9200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2150 N Victoria Ave",
            "address_purpose": "LOCATION",
            "city": "Oxnard",
            "state": "CA",
            "postal_code": "930367791",
            "country_code": "US",
            "telephone_number": "805-382-6296",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3150 E Los Angeles Ave",
            "address_purpose": "LOCATION",
            "city": "Simi Valley",
            "state": "CA",
            "postal_code": "930653940",
            "country_code": "US",
            "telephone_number": "805-577-1724",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOWARD",
        "first_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-05-29",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207QA0401X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Addiction Medicine",
            "state": "CA",
            "license": "20A21641",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "COUNTY OF VENTURA",
            "identifier": "95-60000944",
            "state": "CA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "alexander.howard@ventura.cernerdirect.com",
            "affiliation": "N",
            "endpointDescription": "Cerner Direct Secure Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Information",
            "address_1": "300 Hillmont Ave Bldg 340",
            "city": "Ventura",
            "state": "CA",
            "country_code": "US",
            "postal_code": "930031651",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Ventura, CA

Sources for this page

Verify at the official NPI Registry.