Individual provider Active NPI

Anne Liao, MD

  • Obstetrics & Gynecology Physician
  • Diamond Bar, CA
National Provider Identifier
1164099487
Registry record updated Sep 2, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
A193649 Issued in CA
Practice address
253 S Diamond Bar Blvd
Diamond Bar, CA 91765-1606
Phone
(909) 860-1144
NPI assigned
Jun 6, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 2, 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
Obstetrics & Gynecology Physician 207V00000X A193649 CA Primary

Addresses

Primary practice location

253 S Diamond Bar Blvd
Diamond Bar, CA 91765-1606

Mailing address

1720 E Cesar E Chavez Ave
Los Angeles, CA 90033-2414
Phone (323) 260-5781

Other practice location 1

1720 E Cesar E Chavez Ave
Los Angeles, CA 90033-2414
Phone (323) 260-5781

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
I20250916002440 CA Practitioner - Obstetrics/Gynecology 3577067305 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Other, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians

Practice addresses (Care Compare)

253 S Diamond Bar Blvd
Diamond Bar, CA 91765-1606
Phone (909) 860-1144

Hospital & facility affiliations

  • Providence St. Jude Medical Center Hospital, Fullerton, CA, CCN 050168

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A193649CAMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Providence Medical Foundation Obstetrics & Gynecology CurrentSince Jul 4, 2025 Accepting new patients
Providence Medical Foundation Current Accepting new patients
Providence Medical Foundation CurrentSince Jul 4, 2025 Accepting new patients

Locations

200 W Ctr St Promenade
Ste 300
Anaheim, CA 92805
Phone (714) 449-4841

253 S Diamond Bar Blvd
Diamond Bar, CA 91765
Phone (909) 860-1144

1514 Valley Vista Dr
Diamond Bar, CA 91765
Phone (909) 560-1144

100 E Valencia Mesa Dr
Ste 105
Fullerton, CA 92835
Phone (714) 446-5200

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: aliao4014321@oc.providencedirect.org

Organizations & group practices 3

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 2

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": "1622937600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756771200000",
    "number": "1164099487",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1720 E CESAR E CHAVEZ AVE",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900332414",
            "telephone_number": "323-260-5781"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "253 S DIAMOND BAR BLVD",
            "city": "DIAMOND BAR",
            "state": "CA",
            "postal_code": "917651606",
            "telephone_number": "909-860-1144"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1720 E Cesar E Chavez Ave",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900332414",
            "country_code": "US",
            "telephone_number": "323-260-5781",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LIAO",
        "first_name": "ANNE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-06-06",
        "last_updated": "2025-09-02",
        "certification_date": "2025-09-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "CA",
            "license": "A193649",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Diamond Bar, CA

Sources for this page

Verify at the official NPI Registry.