Individual provider Active NPI

Joel M. Palefsky, MD

  • Infectious Disease Physician
  • San Francisco, CA
National Provider Identifier
1336191345
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Infectious Disease PhysicianTaxonomy code 207RI0200X
License
G54209 Issued in CA
Practice address
1600 Divisadero St
San Francisco, CA 94115-3010
Phone
(415) 353-7100
Fax
(415) 353-7150
NPI assigned
May 17, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X G54209 CA
Infectious Disease Physician 207RI0200X G54209 CA Primary

Addresses

Primary practice location

1600 Divisadero St
San Francisco, CA 94115-3010

Mailing address

1635 Divisadero Street, Suite 625, Box 1821
San Francisco, CA 94143-0001
Phone (415) 476-4029

Other identifiers 1

IdentifierTypeStateIssuer
00G542090MedicaidCA

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
I20080221000304 CA Practitioner - Infectious DiseasePractitioner - Internal Medicine 4082798640 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Infectious DiseaseAlso: Internal Medicine
Education
Other, 1980
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1600 Divisadero St
McB302
San Francisco, CA 94115-3010
Phone (415) 476-1000

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

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.89 of 100Reported as group
Quality
81.13
Improvement activities
40
Cost
71.5

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
54209CAMDPharmacist
G54209CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
UCSF Medical Group Business Services Internal Medicine CurrentSince Jul 1, 2007 Accepting new patients
University of California San Francisco Current Accepting new patients
UCSF Medical Group Business Services CurrentSince Jul 1, 2007 Accepting new patients
University of California San Francisco CurrentSince Jul 1, 2007 Accepting new patients
University of California San Francisco Internal Medicine CurrentSince Jul 1, 2007 Accepting new patients
Regents of the University of California Internal Medicine CurrentSince Jun 5, 2011 Accepting new patients

Locations

1635 Divisadero St
Ste 625
San Francisco, CA 94115
Phone (415) 476-1977

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

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

1600 Divisadero St
San Francisco, CA 94143
Phone (415) 567-6600

2356 Sutter St
San Francisco, CA 94115

1600 Divisadero St
Fl 3
San Francisco, CA 94143
Phone (415) 353-7171

1600 Divisadero St
Fl 4
San Francisco, CA 94143
Phone (415) 353-7100

3333 California St
#S110
San Francisco, CA 94118
Phone (415) 514-2664

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

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

Organizations & group practices 6

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.

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": "1147824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1336191345",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1635 DIVISADERO STREET, SUITE 625, BOX 1821",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941430001",
            "telephone_number": "415-476-4029",
            "fax_number": "415-476-4150"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1600 DIVISADERO ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941153010",
            "telephone_number": "415-353-7100",
            "fax_number": "415-353-7150"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PALEFSKY",
        "first_name": "JOEL",
        "middle_name": "M.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-17",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G54209",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "CA",
            "license": "G54209",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G542090",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.