Joy Huiling Chang, DDS

Primary specialty

Orthodontics and Dentofacial Orthopedics DentistryTaxonomy code 1223X0400X

License

102338 Issued in CA

Practice address

725 Welch Rd
Palo Alto, CA 94304-1601

Phone

(650) 497-8000

NPI assigned

Jun 17, 2015

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

Dentist

Education

Other, 2015

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• LPCH Medical Group Div of Lucile

  • Children's Hospital
  • Palo Alto, CA
  • NPI 1417907940
  Medicare reassignment NPD
• Stanford Health Care

  • General Acute Care Hospital
  • Stanford, CA
  • NPI 1437292927
  Medicare reassignment
• Stanford Health Care

  • Radiation Oncology Physician
  • Pleasanton, CA
  • NPI 1124561758
  NPD
• Stanford Health Care

  • Specialty Pharmacy
  • Mountain View, CA
  • NPI 1760366132
  NPD
• Eric Phelps, DDS, Ms and Jason Cohen, DDS, N

  • Orthodontics and Dentofacial Orthopedics Dentistry
  • San Jose, CA
  • NPI 1699034017
  NPD (past)

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

{
    "created_epoch": "1434499200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768953600000",
    "number": "1922489699",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "725 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041601",
            "telephone_number": "650-497-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "725 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041601",
            "telephone_number": "650-497-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2075 Forest Ave Ste 2",
            "address_purpose": "LOCATION",
            "city": "San Jose",
            "state": "CA",
            "postal_code": "951284812",
            "country_code": "US",
            "telephone_number": "408-298-3433",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHANG",
        "first_name": "JOY",
        "middle_name": "HUILING",
        "credential": "DDS",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-06-17",
        "last_updated": "2026-01-21",
        "certification_date": "2026-01-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223X0400X",
            "taxonomy_group": "",
            "desc": "Dentist, Orthodontics and Dentofacial Orthopedics",
            "state": "CA",
            "license": "102338",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Hui-Tsun Theresa Chang, PH.D.
• James Chang Jr., MD
• Jenni Chang
• Johnny Tzer-Ren Chang, MD
• Joshua Yoonchan Chang, DPT
• Kay Wen Chang, MD
• Kimberly Chang, FNP
• Lian Chang, PHARM.D.
• Marvy Soriano Chang
• Matthew S. Chang, M.D.

• Orthodontics and Dentofacial Orthopedics Dentistry in Palo Alto, CA
• Providers in Palo Alto, CA by specialty
• Orthodontics and Dentofacial Orthopedics Dentistry in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 21, 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.