S Claiborne Johnston, M.D.

Primary specialty

Neurology PhysicianTaxonomy code 2084N0400X

License

G78788 Issued in CA

Practice address

505 Parnassus Ave
San Francisco, CA 94143-2204

Phone

(415) 353-1489

Fax

(415) 476-3428

NPI assigned

Jun 17, 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

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/28292/brand/1/csg/1/fhir/r4

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.

• Harbor Health Medical Group

  • Family Medicine Physician
  • Austin, TX
  • NPI 1396486619

  Neurology

  NPD

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

{
    "created_epoch": "1150502400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1174568927",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1635 DIVISADERO STREET",
            "address_2": "SUITE 625, BOX 1821",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941430001",
            "telephone_number": "415-476-4029",
            "fax_number": "415-476-4150"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "505 PARNASSUS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432204",
            "telephone_number": "415-353-1489",
            "fax_number": "415-476-3428"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JOHNSTON",
        "first_name": "S CLAIBORNE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-17",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "CA",
            "license": "G78788",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G787880",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Yolanda Christine Johnson
• Angela Dawn Johnston Willis, PHARM.D.
• Kadija Lisa Johnston, LCSW
• Michelle FP Johnston, CNM
• Rowan Autumn Johnston, BA
• Alan Johnstone, FNP
• Erica Elaine Johnstone, M.D.
• Melissa Johnstone
• Tessa Blair Johung, MD, PHD
• Larry Joichin, ASW

• Neurology Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Neurology 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.