John Walter Marshall, SUDCC

Primary specialty

Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X

License

12527 Issued in CA

Practice address

4065 3Rd Ave
San Diego, CA 92103-2184

Phone

(619) 515-2545

NPI assigned

Dec 20, 2021

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

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.

• San Diego Treatment Services, LLC

  • Methadone Clinic
  • Chula Vista, CA
  • NPI 1316040223
  NPD (past)

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

{
    "created_epoch": "1639958400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1740528000000",
    "number": "1285394114",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6515 GLENROY ST",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921202715",
            "telephone_number": "619-756-1537"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4065 3RD AVE",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921032184",
            "telephone_number": "619-515-2545"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARSHALL",
        "first_name": "JOHN",
        "middle_name": "WALTER",
        "credential": "SUDCC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-12-20",
        "last_updated": "2025-02-26",
        "certification_date": "2025-02-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "CA",
            "license": "12527",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• David Raymond Marshall, D.C.
• Elizabeth Stacey Marshall, MFT
• Hannah Scott Marshall
• Jeanene Lorraine Marshall, M.S.W.
• Jennifer Marshall
• Justine Marshall
• Karen L Marshall, LCSW
• Keith Avery Marshall
• Kimberly Marshall, FNP
• Kneka Nicolle Marshall, OTD, OTR/L

• Addiction (Substance Use Disorder) Counselor in San Diego, CA
• Providers in San Diego, CA by specialty
• Addiction (Substance Use Disorder) Counselor in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 26, 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.