Joshua Mon Chan, DO, MS

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

20A23348 Issued in CA

Practice address

101 The City Dr S
Orange, CA 92868-3201

Phone

(714) 456-5691

NPI assigned

Apr 18, 2022

Sex

Male

Sole proprietor

Yes

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

Other, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy, Master of Science

State licenses

Practice roles

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.

• The Regents of the University of California-Irvine

  • Hospitalist Physician
  • Orange, CA
  • NPI 1154479723
  NPD (past)

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

{
    "created_epoch": "1650240000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777248000000",
    "number": "1689317588",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-5691"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-5691"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAN",
        "first_name": "JOSHUA",
        "middle_name": "MON",
        "name_prefix": "Dr.",
        "credential": "DO, MS",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-04-18",
        "last_updated": "2026-04-27",
        "certification_date": "2026-04-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A23348",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daniel M Chan, P.A.
• Hin Wai Agatha Chan
• Jamie Sun-Yu Chan
• Janelle Chan
• Jefferson Y Chan, M.D., PH.D.
• Lily Chan, DC
• Lucas Sean Chan
• Margaret Chan, PHARM.D.
• Melinda Chan, AU.D.
• Michael Y Chan, M.D.

• Internal Medicine Physician in Orange, CA
• Providers in Orange, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 27, 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.