Individual provider Active NPI

Alexander David Borowsky, M.D.

  • Anatomic Pathology & Clinical Pathology Physician
  • San Francisco, CA
National Provider Identifier
1891777512
Registry record updated Aug 25, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X
License
A77194 Issued in CA
Practice address
1825 4TH St
San Francisco, CA 94143-2350
Phone
(415) 353-1613
NPI assigned
Nov 17, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 25, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Specialist 174400000X A77194 CA
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X A77194 CA Primary

Addresses

Primary practice location

1825 4TH St
San Francisco, CA 94143-2350

Mailing address

1825 4TH St
San Francisco, CA 94143-2350

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
I20110421000457 CA Practitioner - Pathology 3678758430 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
Vanderbilt University School of Medicine, 1994
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

2330 Post St
San Francisco, CA 94115-3465
Phone (415) 476-4029

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
83.15 of 100Reported as group
Quality
64.8
Promoting interoperability
100
Improvement activities
40
Cost
68.65

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A77194CAMDSpecialist

Practice roles

OrganizationSpecialtyStatusNew patients
UCSF Medical Group Business Services CurrentSince Aug 15, 2025 Accepting new patients
University of California San Francisco CurrentSince Aug 15, 2025 Accepting new patients
Regents of the Univ of Ca CurrentSince Aug 25, 1983 Accepting new patients
UCSF Medical Group Business Services CurrentSince Aug 15, 2025 Accepting new patients
Regents of the Univ of Ca Current Accepting new patients
Regents of the University of Ca CurrentSince Aug 25, 1983 Accepting new patients
University of California San Francisco CurrentSince Aug 15, 2025 Accepting new patients
Regents of the Univ of Ca Past Accepting new patients
University of California San Francisco Past Accepting new patients
University of California San Francisco Medical Center Past Accepting new patients
Regents of the Univ of Ca Past Accepting new patients

Locations

3100 San Pablo Ave
Berkeley, CA 94702
Phone (510) 985-5020

2315 Stockton Blvd
Sacramento, CA 95817
Phone (916) 703-3030

2315 Stockton Blvd
#5
Sacramento, CA 95817
Phone (916) 703-3050

2315 Stockton Blvd
#1
Sacramento, CA 95817

4400 V St
Sacramento, CA 95817
Phone (916) 734-2525

4860 Y St
Sacramento, CA 95817
Phone (916) 734-2700

1825 4th St
#4066
San Francisco, CA 94143
Phone (415) 353-1613

1825 4th St
San Francisco, CA 94143
Phone (415) 353-3000

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

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

Interoperability endpoints

  • Direct secure messaging: aborowsky437875@direct-ucsfmedicalcenter.org

Organizations & group practices 11

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.

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": "1132185600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756080000000",
    "number": "1891777512",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1825 4TH ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432350"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1825 4TH ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432350",
            "telephone_number": "415-353-1613"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BOROWSKY",
        "first_name": "ALEXANDER",
        "middle_name": "DAVID",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-17",
        "last_updated": "2025-08-25",
        "certification_date": "2025-08-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "CA",
            "license": "A77194",
            "primary": false
        },
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "CA",
            "license": "A77194",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.