Charles A. Linker, MD

Primary specialty

Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X

License

G30910 Issued in CA

Practice address

400 Parnassus Ave
San Francisco, CA 94143-2202

Phone

(415) 353-2421

Fax

(415) 353-2467

NPI assigned

Apr 14, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

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

State licenses

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

{
    "created_epoch": "1144972800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1811951957",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1635 DIVISADERO STREET, 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": "400 PARNASSUS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432202",
            "telephone_number": "415-353-2421",
            "fax_number": "415-353-2467"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LINKER",
        "first_name": "CHARLES",
        "middle_name": "A.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-14",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G30910",
            "primary": false
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "CA",
            "license": "G30910",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0G3091000",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Linguistic Connection Inc.
• Heather Linhardt
• Jessica Wait Link
• Tamera Link
• Thomas M. Link, M.D.
• Ross Bennett Linker, DDS, MD
• Thomas Elliot Linker
• Denisa Lino, LPT
• Margaret Victoria Lino, AOD
• Rhodora Lino

• Hematology (Internal Medicine) Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Hematology (Internal Medicine) 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.