Individual provider Active NPI

Stefano Azelio Iantorno, MD, PHD

  • Critical Care Medicine (Internal Medicine) Physician
  • San Francisco, CA
National Provider Identifier
1952860900
Registry record updated Feb 27, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
A177369 Issued in CA
Practice address
505 Parnassus Ave
San Francisco, CA 94143-2204
Phone
(415) 476-1000
NPI assigned
Mar 19, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 27, 2024

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Critical Care Medicine (Internal Medicine) Physician 207RC0200X A177369 CA Primary

Addresses

Primary practice location

505 Parnassus Ave
San Francisco, CA 94143-2204

Mailing address

513 Parnassus Ave
Box 0111
San Francisco, CA 94143-2205

Other practice location 1

1200 N State Street
Clinic Tower, Suite A7D
Los Angeles, CA 90033-1029
Phone (323) 409-7556

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20250630000673 CA Practitioner - Pulmonary Disease 3173954674 Reassigns benefits to 6 organizations

Care Compare profile

Medicare Care Compare
Specialty
Pulmonary Disease
Education
Columbia University College of Physicians and Surgeons, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University Anesthesia Medical GroupGroup PAC ID 2769370535, 402 clinicians

Practice addresses (Care Compare)

505 Parnassus Ave
San Francisco, CA 94143-2204
Phone (415) 476-1000

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine, Doctor of Philosophy

State licenses

LicenseStateTypeSpecialty
A177369CAMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of California San Francisco Current Accepting new patients
University of California SFGH Medical Group Current Accepting new patients
City & County of San Francisco Current Accepting new patients
University of California SFGH Medical Group CurrentSince Aug 11, 2025 Accepting new patients
UCSF Medical Group Business Services CurrentSince Jun 17, 2025 Accepting new patients
University of California San Francisco CurrentSince Jun 17, 2025 Accepting new patients
University of California San Francisco CurrentSince Jun 17, 2025 Accepting new patients
City & County of San Francisco CurrentSince Aug 25, 2025 Accepting new patients
UCSF Medical Group Business Services CurrentSince Jun 17, 2025 Accepting new patients
University of California SFGH Medical Group CurrentSince Aug 11, 2025 Accepting new patients
City and County of San Francisco CurrentSince Aug 25, 2025 Accepting new patients
Regents of the University of California CurrentSince Jun 17, 2025 Accepting new patients
University of California San Francisco Medical Center Past Accepting new patients
Regents of the University of California Past Accepting new patients

Locations

1001 Potrero Ave
Rm 5K1
San Francisco, CA 94110
Phone (415) 206-8314

400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000

513 Parnassus Ave
#111
San Francisco, CA 94143
Phone (415) 476-0735

1001 Potrero Ave
San Francisco, CA 94110
Phone (415) 206-2305

400 Parnassus Ave
Fl 6
San Francisco, CA 94143
Phone (415) 353-2200

505 Parnassus Ave
#M1336
San Francisco, CA 94143

505 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9058

2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444

400 Parnassus Ave
Fl Sixth
San Francisco, CA 94143
Phone (415) 353-1606

Organizations & group practices 15

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.

View all 15

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1552953600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1708992000000",
    "number": "1952860900",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "513 PARNASSUS AVE",
            "address_2": "BOX 0111",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432205"
        },
        {
            "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": "415-476-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1200 N State Street",
            "address_2": "Clinic Tower, Suite A7D",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900331029",
            "country_code": "US",
            "telephone_number": "323-409-7556",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "IANTORNO",
        "first_name": "STEFANO",
        "middle_name": "AZELIO",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-19",
        "last_updated": "2024-02-27",
        "certification_date": "2024-02-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "A177369",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.