Alissa Lillian Wall Kleinhenz, MD

Primary specialty

Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X

License

A183921 Issued in CA

Practice address

400 Parnassus Ave FL 4
San Francisco, CA 94143-2202

Phone

(415) 353-2421

NPI assigned

Mar 30, 2020

Sex

Female

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

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1585526400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786406400000",
    "number": "1790313484",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "505 PARNASSUS AVE # 119",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432204"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 PARNASSUS AVE FL 4",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432202",
            "telephone_number": "415-353-2421"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "505 Parnassus Ave # 119",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941432204",
            "country_code": "US",
            "telephone_number": "415-476-1529",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "747 52nd St",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946091809",
            "country_code": "US",
            "telephone_number": "510-428-3372",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KLEINHENZ",
        "first_name": "ALISSA",
        "middle_name": "LILLIAN WALL",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-03-30",
        "last_updated": "2026-08-11",
        "certification_date": "2026-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "A183921",
            "primary": false
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "CA",
            "license": "A183921",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Scott Eric Klein, MD, MS
• Suzanne Klein, PH.D.
• Tiffany Arthur Klein, M.D.
• Alexander L Kleinberg, MFTI
• Miyoung Kleine
• Mary Ellen Kleinhenz, MD
• Lara Klemens, CMT
• Hannah Klempner
• Arielle Louisa Klepper
• Robert Michael Klett, M.D.

• 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 Aug 11, 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.