Emmy Tian

Primary specialty

OptometristTaxonomy code 152W00000X

License

35500 Issued in CA

Practice address

490 Illinois Street
San Francisco, CA 94158

Phone

(415) 353-2020

NPI assigned

Apr 21, 2023

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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

Specialty

Optometry

Education

Other, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

UCSF Medical Group Business ServicesGroup PAC ID 3779497870, 1,533 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• UCSF Medical Center Hospital, San Francisco, CA, CCN 050454

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.meditouchehr.com/api/fhir/r4/
• Direct secure messaging: etian254953@direct-ucsfmedicalcenter.org

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.

• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104
  Medicare reassignment Care Compare group NPD
• Marshall B. Ketchum University

  • Optometrist
  • Anaheim, CA
  • NPI 1720101876
  Medicare reassignment NPD
• Sakai and Junge Optometry Corp.

  • Optometrist
  • Oakland, CA
  • NPI 1760532659
  Medicare reassignment NPD
• University of California San Francisco

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment NPD
• Marshall B. Ketchum University

  • Multi-Specialty Clinic/Center
  • Anaheim, CA
  • NPI 1174037493
  NPD
• UCSF Medical Group Business Services

  • Health Service Clinic/Center
  • San Francisco, CA
  • NPI 1194115246
  NPD
• University of California San Francisco

  • Surgery Physician
  • San Francisco, CA
  • NPI 1346329380
  NPD
• University of California San Francisco

  • Community/Retail Pharmacy
  • San Francisco, CA
  • NPI 1659141711
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• University of California, San Francisco

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1689772592
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1682035200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757030400000",
    "number": "1730876467",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8764 STEELHEAD CT",
            "city": "RENO",
            "state": "NV",
            "postal_code": "895238948",
            "telephone_number": "775-247-5382"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "490 ILLINOIS STREET",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94158",
            "telephone_number": "415-353-2020"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "284 Lafayette Cir",
            "address_purpose": "LOCATION",
            "city": "Lafayette",
            "state": "CA",
            "postal_code": "945494379",
            "country_code": "US",
            "telephone_number": "925-284-1500",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5321 College Ave",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946181416",
            "country_code": "US",
            "telephone_number": "510-655-3797",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TIAN",
        "first_name": "EMMY",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-04-21",
        "last_updated": "2025-09-05",
        "certification_date": "2025-09-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "35500",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Yin Moe Thwe, MD
• Shannon M Thyne, MD
• Selma Tia
• Tian Yun Chiropractic Clinic
• Tian Yun Clinic
• Tiatros Inc.
• Susan Michelle Tibuni-Sanders, MD
• Samuel Alejandro Ticas, SUD COUNSELOR
• Jeffrey Arthur Tice, MD
• Victoria Tichenor, PH.D.

• Optometrist in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Optometrist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.