NPIMap

Individual provider Active NPI

Robert Michael Zimbroff, MD

  • Geriatric Medicine (Internal Medicine) Physician
  • Brisbane, CA
National Provider Identifier
1659832087
Registry record updated May 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X
License
A178787 Issued in CA
Practice address
8000 Marina Blvd Ste 800
Brisbane, CA 94005-1875
Phone
(415) 514-3577
Fax
(415) 514-0702
NPI assigned
Mar 28, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 4, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Geriatric Medicine (Internal Medicine) Physician 207RG0300X A178787 CA Primary

Addresses

Primary practice location

8000 Marina Blvd Ste 800
Brisbane, CA 94005-1875

Mailing address

8000 Marina Blvd Ste 800
Brisbane, CA 94005-1875
Phone (415) 514-3577

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
I20230803004296 CA Practitioner - Geriatric MedicinePractitioner - Internal Medicine 7214279447 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Geriatric MedicineAlso: Internal Medicine
Education
Icahn School of Medicine at Mount Sinai, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

400 Parnassus Ave
San Francisco, CA 94143-2202
Phone (415) 476-4029

505 Parnassus Ave
San Francisco, CA 94143-2204
Phone (415) 476-4029

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as group
Quality
95
Improvement activities
40
Cost
80.65

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A178787CAMDGeriatric Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
UCSF Medical Group Business Services CurrentSince Jun 30, 2023 Accepting new patients
University of California San Francisco Current Accepting new patients
UCSF Medical Group Business Services CurrentSince Jun 30, 2023 Accepting new patients
Regents of the University of California Geriatric Medicine CurrentSince Jun 30, 2023 Accepting new patients
University of California San Francisco CurrentSince Jun 30, 2023 Accepting new patients
University of California San Francisco CurrentSince Jun 30, 2023 Accepting new patients
Regents of the University of California Past Accepting new patients
University of California San Francisco Medical Center Past Accepting new patients

Locations

8000 Marina Blvd
Ste 800
Brisbane, CA 94005
Phone (415) 502-3322

490 Illinois St
Fl 8
San Francisco, CA 94143
Phone (415) 353-2800

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

4150 Clement St
Bldg 1
San Francisco, CA 94121
Phone (415) 750-2124

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

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

2001 The Embarcadero
Ofc Of
San Francisco, CA 94143
Phone (628) 224-5503

Organizations & group practices 8

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 7

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": "1553731200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777852800000",
    "number": "1659832087",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8000 MARINA BLVD STE 800",
            "city": "BRISBANE",
            "state": "CA",
            "postal_code": "940051875",
            "telephone_number": "415-514-3577",
            "fax_number": "415-514-0702"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8000 MARINA BLVD STE 800",
            "city": "BRISBANE",
            "state": "CA",
            "postal_code": "940051875",
            "telephone_number": "415-514-3577",
            "fax_number": "415-514-0702"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZIMBROFF",
        "first_name": "ROBERT",
        "middle_name": "MICHAEL",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-28",
        "last_updated": "2026-05-04",
        "certification_date": "2026-05-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "CA",
            "license": "A178787",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Brisbane, CA

Sources for this page

Verify at the official NPI Registry.