John Carter Alden, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

000G84240 Issued in CA

Practice address

350 30TH Street
Suite 444
Oakland, CA 94609

Phone

(510) 452-2020

Fax

(510) 452-2091

NPI assigned

Mar 15, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1142380800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1013986868",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "350 30TH STREET",
            "address_2": "SUITE 444",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "94609",
            "telephone_number": "510-452-2020",
            "fax_number": "510-452-2091"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "350 30TH STREET",
            "address_2": "SUITE 444",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "94609",
            "telephone_number": "510-452-2020",
            "fax_number": "510-452-2091"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALDEN",
        "first_name": "JOHN",
        "middle_name": "CARTER",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "000G84240",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jennifer Aldana
• Catherine Aldax
• Victoria Alexandra Aldaz-Perry, N.P.
• Alden Chiropractic, Inc.
• Janice Marie Alden, D.C.
• Jessica Galen Alder, ASW
• Keelia Willison Alder, CERTIFIED DOULA
• Krystal Judith Alderete, MFT
• Veronica Aldon, RN
• Jessica Aldrete

• Ophthalmology Physician in Oakland, CA
• Providers in Oakland, CA by specialty
• Ophthalmology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.