Mark Tenforde, MD, PHD, MPH

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

C203938 Issued in CA

Practice address

27 Van Ness Ave
San Francisco, CA 94102-6012

Phone

(628) 219-2246

NPI assigned

Mar 24, 2011

Last updated

Sep 23, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

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": "1300924800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790121600000",
    "number": "1528367901",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "25 VAN NESS AVE FL 5",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941026033",
            "telephone_number": "628-219-2246"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "27 VAN NESS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941026012",
            "telephone_number": "628-219-2246"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TENFORDE",
        "first_name": "MARK",
        "name_prefix": "Dr.",
        "credential": "MD, PHD, MPH",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2011-03-24",
        "last_updated": "2026-09-23",
        "certification_date": "2026-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "C203938",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "CA",
            "license": "C203938",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Therese Ten Tusscher, PHD
• April Allison Obiso Tenchavez
• Tenderloin Health
• Tenderloin Neighborhood Development Corporation
• Tendertree, Inc.
• Alexandra Teng
• Allison Teng
• Chengyun (Charlotte) Teng
• Peter I Teng, M.D.
• Shelly Teng

• Infectious Disease Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Infectious Disease Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 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.