William Chang-Yuen Chen

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

A184576 Issued in CA

Practice address

8008 Frost St Ste 200
San Diego, CA 92123-4207

Phone

(858) 292-7527

Fax

(858) 292-7804

NPI assigned

Apr 1, 2015

Sex

Male

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: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

Icahn School of Medicine at Mount Sinai, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

San Diego Digestive Disease Consultants Inc a Medical GroupGroup PAC ID 2264482413, 13 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sharp Memorial Hospital Hospital, San Diego, CA, CCN 050100
• Palomar Health Downtown Campus Hospital, Escondido, CA, CCN 050115
• Grossmont Hospital Hospital, La Mesa, CA, CCN 050026
• Sharp Coronado Hospital and Hlthcr Ctr Hospital, Coronado, CA, CCN 050234
• Sharp Chula Vista Medical Center Hospital, Chula Vista, CA, CCN 050222

Merit-based Incentive Payment System (MIPS)

Final score

92.74 of 100Reported as group

Quality

95.68

Improvement activities

40

Cost

81.57

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wchen33558@sharphealthcare.direct-ci.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.

• San Diego Digestive Disease Consultants, Inc. a Medical Group

  • Gastroenterology Physician
  • San Diego, CA
  • NPI 1013132216
  Medicare reassignment Care Compare group NPD
• Emergency and Acute Care Medical Corporation

  • Emergency Medicine Physician
  • San Diego, CA
  • NPI 1437103942
  Medicare reassignment
• The Cooper Health System

  • General Acute Care Hospital
  • Camden, NJ
  • NPI 1568442309
  NPD (past)

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

• Grossmont Hospital Corporation

  dba Sharp Grossmont Hospital

  • General Acute Care Hospital
  • La Mesa, CA
  • NPI 1528041811
  Care Compare affiliation
• Palomar Health

  dba Palomar Medical Center Escondido

  • General Acute Care Hospital
  • Escondido, CA
  • NPI 1457321317
  Care Compare affiliation
• Sharp Chula Vista Medical Center

  • General Acute Care Hospital
  • Chula Vista, CA
  • NPI 1396728630
  Care Compare affiliation
• Sharp Coronado Hospital and Healthcare Center

  dba Sharp Coronado Hospital

  • General Acute Care Hospital
  • Coronado, CA
  • NPI 1154304475
  Care Compare affiliation
• Sharp Memorial Hospital

  dba Sharp Allison deRose Rehabilitation Center

  • Rehabilitation Hospital Unit
  • San Diego, CA
  • NPI 1114901352
  Care Compare affiliation
• Sharp Memorial Hospital

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1407839921
  Care Compare affiliation

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

{
    "created_epoch": "1427846400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778630400000",
    "number": "1366837890",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8008 FROST ST STE 200",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921234207",
            "telephone_number": "858-292-7527",
            "fax_number": "858-863-5010"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8008 FROST ST STE 200",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921234207",
            "telephone_number": "858-292-7527",
            "fax_number": "858-292-7804"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "15611 Pomerado Rd Ste 500",
            "address_purpose": "LOCATION",
            "city": "Poway",
            "state": "CA",
            "postal_code": "920642438",
            "country_code": "US",
            "telephone_number": "858-292-7527",
            "fax_number": "858-292-7804",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHEN",
        "first_name": "WILLIAM",
        "middle_name": "CHANG-YUEN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-01",
        "last_updated": "2026-05-13",
        "certification_date": "2026-05-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A184576",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tsuh-Yin Chen, MD
• Uzi Chen, L.AC.
• Vanessa Chen
• Victor Chen
• Weiqing Chen, PHARMD
• Xuantan Chen
• Xuyi Chen
• Yeqing Chen, L. AC, OMD
• Ying-Ju Chen, PT
• Yiqi Chen

• Gastroenterology Physician in San Diego, CA
• Providers in San Diego, CA by specialty
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 13, 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.