Alejandro Ivan Lopez

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

A177469 Issued in CA

Practice address

505 Parnassus Ave
San Francisco, CA 94143-2204

Phone

(787) 806-6380

NPI assigned

Mar 26, 2020

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

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

Specialty

Gastroenterology

Education

Other, 2020

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Regents of the University of California

  dba UCSF Dept of Medicine General Medicine

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1760552343
  Medicare reassignment
• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104
  Medicare reassignment
• University of California San Francisco

  dba UCSF Pediatrics Group

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment

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

{
    "created_epoch": "1585180800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775520000000",
    "number": "1578190724",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "505 PARNASSUS AVE RM M-1480",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432204",
            "telephone_number": "787-806-6380"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "505 PARNASSUS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432204",
            "telephone_number": "787-806-6380"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1701 Divisadero St Ste 120",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941153011",
            "country_code": "US",
            "telephone_number": "415-353-7655",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LOPEZ",
        "first_name": "ALEJANDRO",
        "middle_name": "IVAN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-26",
        "last_updated": "2026-04-07",
        "certification_date": "2026-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A177469",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Aneesh Lopez-Nandam, M.D.
• Abner Jeziel Lopez
• Adam Lopez
• Alan Lopez
• Alberto G Lopez, MD
• Alexis Christine Lopez, PSYD
• Alfredo R. Lopez, MD
• Alvin Lopez, RADT
• Alyssa Nicole Lopez
• America Lopez

• 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 Apr 7, 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.
• 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.