Individual provider Active NPI

Lillian Peng, M.D.

  • Hospitalist Physician
  • San Francisco, CA
National Provider Identifier
1710636832
Registry record updated Jun 1, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
A188796 Issued in CA
Practice address
521 Parnassus Ave
San Francisco, CA 94143-2206
Phone
(415) 476-1000
NPI assigned
Mar 23, 2022
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 1, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Hospitalist Physician 208M00000X A188796 CA Primary

Addresses

Primary practice location

521 Parnassus Ave
San Francisco, CA 94143-2206

Mailing address

207 5TH Ave SW Apt 205
Rochester, MN 55902-3115

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: No
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250916003777 CA Practitioner - Hospitalist 3577935675 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hospitalist
Education
Other, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

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

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A188796CAMDHospitalist Physician
9967CAMDOther Specialist/Technologist

Practice roles

OrganizationSpecialtyStatusNew patients
UCSF Medical Group Business Services CurrentSince Aug 2, 2025 Accepting new patients
Regents of the University of California CurrentSince Aug 2, 2025 Accepting new patients
University of California San Francisco CurrentSince Aug 2, 2025 Accepting new patients
UCSF Medical Group Business Services CurrentSince Aug 2, 2025 Accepting new patients
University of California San Francisco CurrentSince Aug 2, 2025 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

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

521 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9035

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

2001 The Embarcadero
Ste 1500
San Francisco, CA 94143
Phone (415) 353-1606

505 Parnassus Ave
#M1480
San Francisco, CA 94143
Phone (415) 476-1528

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

Organizations & group practices 7

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": "1647993600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748736000000",
    "number": "1710636832",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "207 5TH AVE SW APT 205",
            "city": "ROCHESTER",
            "state": "MN",
            "postal_code": "559023115"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "521 PARNASSUS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432206",
            "telephone_number": "415-476-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PENG",
        "first_name": "LILLIAN",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2022-03-23",
        "last_updated": "2025-06-01",
        "certification_date": "2025-06-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "A188796",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.