William Doan Nguyen, OD

Primary specialty

OptometristTaxonomy code 152W00000X

License

36323 Issued in CA

Practice address

490 Illinois St
San Francisco, CA 94158

Phone

(415) 530-6123

NPI assigned

Jul 4, 2025

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

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

Specialty

Optometry

Education

State University of New York - State College Optometry, 2025

Medicare assignment

May accept Medicare assignment

Group practices

State of New York Comptrollers OfficeGroup PAC ID 0840101770, 171 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

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.

• State of New York Comptrollers Office

  • Optometrist
  • New York, NY
  • NPI 1407829856
  Medicare reassignment Care Compare group NPD
• State of New York Comptrollers Office

  • Developmental Disabilities Clinic/Center
  • Staten Island, NY
  • NPI 1750469912
  NPD
• Suny Downstate Medical Center

  • Emergency Medicine Physician
  • Brooklyn, NY
  • NPI 1699704155
  NPD (past)

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

{
    "created_epoch": "1751587200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784246400000",
    "number": "1689564486",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1825 4TH ST",
            "address_2": "UCSF MEDICAL CENTER, PEDS OPHTHALMOLOGY BOX 0735",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432350",
            "telephone_number": "415-530-6123"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "490 ILLINOIS ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94158",
            "telephone_number": "415-530-6123"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1825 4th St",
            "address_2": "UCSF Medical Center, Peds Ophthalmology Box 0735",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941432350",
            "country_code": "US",
            "telephone_number": "415-530-6123",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DOAN NGUYEN",
        "first_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "OD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-07-04",
        "last_updated": "2026-07-17",
        "certification_date": "2026-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152WL0500X",
            "taxonomy_group": "",
            "desc": "Optometrist, Low Vision Rehabilitation",
            "state": "NY",
            "license": "011250",
            "primary": false
        },
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "36323",
            "primary": true
        },
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "NY",
            "license": "011250",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Shelly Phuong Thu DO
• Thao UC DO, MFT
• Tin M DO, M.D.
• Tram Hoang DO
• Xuan Vien DO, MD
• Brian Doan, NP-C
• John Doan, MD
• Josephine Doan
• Kollan Doan, DO
• Emma Dobbins

• 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 Jul 17, 2026; 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.