Martin Jay Spitz, M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

G11391 Issued in CA

Practice address

4150 Clement St
San Francisco, CA 94121-1545

Phone

(415) 540-1027

Fax

(415) 750-3386

NPI assigned

Dec 9, 2005

Last updated

Jul 13, 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 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• DHHS PHS Naihs Fort Defiance Hospital

  dba PHS Fort Defiance Indian Hospital

  • General Acute Care Hospital
  • Fort Defiance, AZ
  • NPI 1700962131
  NPD (past)

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

{
    "created_epoch": "1134086400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1871578021",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "108 AUTUMN RUN WAY",
            "city": "NAPA",
            "state": "CA",
            "postal_code": "945586724",
            "telephone_number": "707-226-7755",
            "fax_number": "707-226-3581"
        },
        {
            "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": "941211545",
            "telephone_number": "415-540-1027",
            "fax_number": "415-750-3386"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SPITZ",
        "first_name": "MARTIN",
        "middle_name": "JAY",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-09",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "G11391",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Deana Lauren Spiotta, RDN, LD
• Spiraling Rose, LLC (San Francisco Gyrotonic)
• Michael David Spiro, MB.BS
• Lisa Mira Spitalewitz, PA-C
• Lynn E. Spitler, MD
• Alla I. Spivak, M.D.
• Natalya Spivak
• Olga V Spivak, NP
• Bruce E. Spivey, M.D.
• Irving Thomas Spivey

• Gastroenterology Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Gastroenterology 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.