William Hsu, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

A209789 Issued in CA

Practice address

1500 Duarte Rd
Duarte, CA 91010-3012

Phone

(800) 826-4673

NPI assigned

May 1, 2020

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MD, NY, CA3 enrollments

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 3

Specialty

Anesthesiology

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

City of Hope Medical FoundationGroup PAC ID 3779751656, 964 clinicians

Albany Medical CollegeGroup PAC ID 1759293111, 1,054 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Albany Medical Center Hospital Hospital, Albany, NY, CCN 330013
• City of Hope Helford Clinical Research Hospital Hospital, Duarte, CA, CCN 050146

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: whsu843124@direct.hopkinsmedicine.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.

• Albany Medical College

  • Allergy & Immunology Physician
  • Albany, NY
  • NPI 1497921688

  Anesthesiology

  Medicare reassignment Care Compare group NPD
• City of Hope Medical Foundation

  • Hematology & Oncology Physician
  • Duarte, CA
  • NPI 1871886366
  Medicare reassignment Care Compare group
• Johns Hopkins University

  • Pain Medicine (Anesthesiology) Physician
  • Baltimore, MD
  • NPI 1922008549
  Medicare reassignment NPD
• Albany Medical College

  • Urgent Care Clinic/Center
  • Albany, NY
  • NPI 1386038925
  NPD
• Johns Hopkins University

  • Ophthalmology Physician
  • Belcamp, MD
  • NPI 1376342774
  NPD
• Johns Hopkins University

  • Critical Care Medicine (Anesthesiology) Physician
  • Baltimore, MD
  • NPI 1881694453
  NPD
• Albany Medical College

  • Allergy & Immunology Physician
  • Albany, NY
  • NPI 1386689248
  NPD (past)

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

• City of Hope National Medical Center

  • General Acute Care Hospital
  • Duarte, CA
  • NPI 1750358297
  Care Compare affiliation
• Albany Med Niskayuna Ambulatory Endoscopy and Surgery Center

  • Ambulatory Surgical Clinic/Center
  • Niskayana, NY
  • NPI 1154973071

  Hospital

  Care Compare affiliation
• Albany Medical Center Hospital

  • General Acute Care Hospital
  • Albany, NY
  • NPI 1376577247
  Care Compare affiliation
• Albany Medical Center Hospital

  • Clinical Medical Laboratory
  • Albany, NY
  • NPI 1700204641

  Hospital

  Care Compare affiliation
• Albany Medical Center Hospital

  • Radiology Clinic/Center
  • Albany, NY
  • NPI 1811448657

  Hospital

  Care Compare affiliation
• Albany Medical Center Hospital

  • General Acute Care Hospital
  • Albany, NY
  • NPI 1811917461
  Care Compare affiliation

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

{
    "created_epoch": "1588291200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783468800000",
    "number": "1326669276",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 512185",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900510185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 DUARTE RD",
            "city": "DUARTE",
            "state": "CA",
            "postal_code": "910103012",
            "telephone_number": "800-826-4673"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HSU",
        "first_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-05-01",
        "last_updated": "2026-07-08",
        "certification_date": "2026-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MD",
            "license": "D0101574",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A209789",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@cityofhope.direct-ci.com",
            "affiliation": "Y",
            "affiliationName": "CITY OF HOPE MEDICAL FOUNDATION",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1500 Duarte Rd",
            "city": "Duarte",
            "state": "CA",
            "country_code": "US",
            "postal_code": "910103012",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Ying-Wen Hsiao, DDS
• Jason Hsu
• Joyce Hsu, N.P.
• Peter Justice Hsu, NURSE PRACTITIONER
• Vanessa Hsu
• Myo Htut, M.D.
• Ke Nan Huang, MD
• Qin Huang, MD
• Ashley Nichole Hudson, PHD
• Gary Thomas Hum, M.D.

• Anesthesiology Physician in Duarte, CA
• Providers in Duarte, CA by specialty
• Anesthesiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 8, 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.