Lewis Tanenbaum, MD

Primary specialty

Dermatology PhysicianTaxonomy code 207N00000X

License

G31735 Issued in CA

Practice address

535 Miller Ave
Mill Valley, CA 94941-2905

Phone

(415) 383-5486

Fax

(415) 389-7455

NPI assigned

Aug 26, 2005

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

Medicare fee-for-service enrollment

Enrolled in CA

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.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• Direct secure messaging: ltanenbaum@greenberg.emadirect.md

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.

• Joseph H Greenberg LTD a Medical Corp

  • Specialist
  • San Rafael, CA
  • NPI 1780857318
  Medicare reassignment
• California Pacific Medical Group, Inc.

  • Multi-Specialty Clinic/Center
  • Oakland, CA
  • NPI 1275002453
  NPD (past)

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

{
    "created_epoch": "1125014400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1083607808",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "535 MILLER AVE",
            "city": "MILL VALLEY",
            "state": "CA",
            "postal_code": "949412905",
            "telephone_number": "415-383-5486",
            "fax_number": "415-389-7455"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "535 MILLER AVE",
            "city": "MILL VALLEY",
            "state": "CA",
            "postal_code": "949412905",
            "telephone_number": "415-383-5486",
            "fax_number": "415-389-7455"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TANENBAUM",
        "first_name": "LEWIS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-26",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "CA",
            "license": "G31735",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Janine Marie Swenberg, L.AC.
• Mark Swoiskin, M.D.
• Charles S Szabo, MD
• Larry Tackett
• Yewtai Frederick Tan, D.D.S.
• Lisa L Tangalos, LCSW
• Noellette P Tangtrongsakdi-Falkow, D.D.S., M.S.D.
• Judi P Tawney
• Mahnaz Tayarani Babai, RDHAP
• Brenna Christine Taylor-Ford, LCSW

• Dermatology Physician in Mill Valley, CA
• Providers in Mill Valley, CA by specialty
• Dermatology 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.
• 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.