Arjun Rustagi, M.D., PH.D.

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

A145156 Issued in CA

Practice address

4150 Clement St
San Francisco, CA 94121-1563

Phone

(415) 221-4810

NPI assigned

Mar 31, 2015

Last updated

Jul 29, 2026By the provider in NPPES

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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Merit-based Incentive Payment System (MIPS)

Final score

88.53 of 100Reported as group

Quality

87.08

Promoting interoperability

100

Improvement activities

40

Cost

69.51

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

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

{
    "created_epoch": "1427760000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785283200000",
    "number": "1346635083",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4150 CLEMENT ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941211563",
            "telephone_number": "415-221-4810"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4150 CLEMENT ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941211563",
            "telephone_number": "415-221-4810"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RUSTAGI",
        "first_name": "ARJUN",
        "name_prefix": "Dr.",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-03-31",
        "last_updated": "2026-07-29",
        "certification_date": "2026-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "CA",
            "license": "A145156",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A145156",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katherine Elizabeth Russo
• Silvia Paola Russo, MD
• James Dean Russum, RN
• Gary A Rust, MD
• Alison Silvis Rustagi, MD, PHD
• Tarun Rustagi, M.D.
• Philip Rustia
• Mark Rusznak
• Pierrot Rutagarama, MD
• Ceres Rutan

• 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 Jul 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.