NPIMap

Individual provider Active NPI

Ronald Brian Tesoriero, M.D.

  • Surgery Physician
  • San Francisco, CA
National Provider Identifier
1013997964
Registry record updated Apr 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgery PhysicianTaxonomy code 208600000X
License
A107010 Issued in CA
Practice address
1001 Potrero Ave
San Francisco, CA 94110-3518
Phone
(628) 206-8000
NPI assigned
Jan 18, 2006
Last updated
Apr 15, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 15, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X A107010 CA Primary
Surgical Critical Care Physician 2086S0102X A107010 CA

Addresses

Primary practice location

1001 Potrero Ave
San Francisco, CA 94110-3518

Mailing address

PO Box 743749
Los Angeles, CA 90074-3749
Phone (415) 514-3000

Other practice location 1

22 S Greene St
Baltimore, MD 21201-1544
Phone (410) 328-6704

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20200221001146 CA Practitioner - General Surgery 0244325017 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
University of Cincinnati College of Medicine, 1998
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1001 Potrero Ave
San Francisco, CA 94110-3518
Phone (415) 206-4632

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
97.28 of 100Reported as group
Quality
89.92
Promoting interoperability
100
Improvement activities
40
Cost
78.23

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Hernia repair - groin (open)1-10
Removal of tissue12

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A107010CAMDSurgical Critical Care Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of California San Francisco Surgery CurrentSince Apr 10, 2020 Accepting new patients
UCSF Medical Group Business Services CurrentSince Apr 10, 2020 Accepting new patients
University of California SFGH Medical Group Surgery CurrentSince Mar 1, 2020 Accepting new patients
University of California SFGH Medical Group Surgery Current Accepting new patients
UCSF Medical Group Business Services Surgery CurrentSince Apr 10, 2020 Accepting new patients
UCSF Dept of Surgery Surgery CurrentSince Apr 10, 2020 Accepting new patients
City and County of San Francisco CurrentSince Mar 17, 2020 Accepting new patients
City & County of San Francisco CurrentSince Mar 17, 2020 Accepting new patients
University of California San Francisco CurrentSince Apr 10, 2020 Accepting new patients
University of California San Francisco Current Accepting new patients
City & County of San Francisco Current Accepting new patients
University of California San Francisco Medical Center Past Accepting new patients
Umass Memorial Medical Center, Inc. Past Accepting new patients
Regents of the University of California Past Accepting new patients
University of California San Francisco Past Accepting new patients

Locations

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

1001 Potrero Ave
Bldg 5
San Francisco, CA 94110
Phone (628) 206-5753

1001 Potrero Ave
Rm 3A
San Francisco, CA 94110
Phone (415) 206-4632

1001 Potrero Ave
Rm 3A37
San Francisco, CA 94110
Phone (415) 206-4634

1001 Potrero Ave
Rm 4F4
San Francisco, CA 94110
Phone (628) 206-8314

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

400 Parnassus Ave
San Francisco, CA 94143
Phone (415) 353-2000

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

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

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 3

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": "1137542400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776211200000",
    "number": "1013997964",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 743749",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900743749",
            "telephone_number": "415-514-3000",
            "fax_number": "415-502-8175"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1001 POTRERO AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941103518",
            "telephone_number": "628-206-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "22 S Greene St",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212011544",
            "country_code": "US",
            "telephone_number": "410-328-6704",
            "fax_number": "410-328-4124",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TESORIERO",
        "first_name": "RONALD",
        "middle_name": "BRIAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-18",
        "last_updated": "2026-04-15",
        "certification_date": "2026-04-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "A107010",
            "primary": true
        },
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "CA",
            "license": "A107010",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.