William Stephen Chung, M.D.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

A51482 Issued in CA

Practice address

728 Pacific Ave
Suite 507
San Francisco, CA 94133-4457

Phone

(415) 986-2239

Fax

(415) 986-2237

NPI assigned

Aug 21, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other identifiers 1

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

Specialty

Internal Medicine

Education

Other, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Chinese Hospital AssociationGroup PAC ID 9436042413, 37 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Harmony Home Health Home health agency, Daly City, CA, CCN 053133
• Chinese Hospital Hospital, San Francisco, CA, CCN 050407

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: william.chung@11050506387460.direct.elationemr.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Chinese Hospital Association

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1992898837
  Medicare reassignment Care Compare group NPD
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Santa Clara, CA
  • NPI 1073606299
  Medicare reassignment NPD
• Chinese Hospital Association

  dba Chinese Hospital

  • Skilled Nursing Facility
  • San Francisco, CA
  • NPI 1073298196
  NPD
• Chinese Hospital Association

  dba Chinese Hospital Gellert Health Services

  • Primary Care Clinic/Center
  • Daly City, CA
  • NPI 1891150587
  NPD
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Stockton, CA
  • NPI 1548343510
  NPD
• Permanente Medical Group, Inc

  • Clinical Medical Laboratory
  • San Jose, CA
  • NPI 1497971584
  NPD
• California Pacific Medical Group, Inc.

  dba Brown & Toland Medical Group

  • Multi-Specialty Clinic/Center
  • Oakland, CA
  • NPI 1275002453
  NPD (past)
• Lisa Law, MD, a Medical Corporation

  dba Lisa Law, MD

  • Primary Care Clinic/Center
  • San Francisco, CA
  • NPI 1881744423
  NPD (past)

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

• Chinese Hospital Association

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1992898837
  Care Compare affiliation
• Harmony Healthcare LLC

  dba Harmony Home Health

  • Home Health Agency
  • Daly City, CA
  • NPI 1861801821
  Care Compare affiliation

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

{
    "created_epoch": "1156118400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782432000000",
    "number": "1831204486",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "728 PACIFIC AVE",
            "address_2": "SUITE 507",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941334457",
            "telephone_number": "415-986-2239",
            "fax_number": "415-398-6783"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "728 PACIFIC AVE",
            "address_2": "SUITE 507",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941334457",
            "telephone_number": "415-986-2239",
            "fax_number": "415-986-2237"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHUNG",
        "first_name": "WILLIAM",
        "middle_name": "STEPHEN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-21",
        "last_updated": "2026-06-26",
        "certification_date": "2026-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A51482",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "CA",
            "license": "A51482",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "A514822",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Thy Chung
• Tiffany Chung, PHARM.D.
• TSZ Ching Isaac Chung
• Wai Chung
• Wayne Chung, MD
• Yiu Ting Chung, MD
• Paula Lauren Carpio Chuo
• Santos Miguel Chupina-Orantes, PH.D.
• Alia Lisbeth Church
• Gwynne D. Church, M.D.

• Cardiovascular Disease Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Cardiovascular Disease Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 26, 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.