John T. Duong, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A66685 Issued in CA

Practice address

4540 E 7TH St
Long Beach, CA 90804-4327

Phone

(562) 344-1150

Fax

(562) 344-1155

NPI assigned

Jul 25, 2006

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

Other identifiers 2

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Healthcare Partners Affiliates Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593
  Medicare reassignment NPD
• Carequest Mobile Doctors & Wound Specialists

  • Infectious Disease Physician
  • Van Nuys, CA
  • NPI 1124831755
  Medicare reassignment
• Healthcare Partners Affiliates Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Healthcare Partners Affiliates Medical Group

  • Addiction Medicine (Internal Medicine) Physician
  • Tustin, CA
  • NPI 1891981502
  NPD
• California Care Level Management Direct Medical Group, Inc

  • General Practice Physician
  • Woodland Hills, CA
  • NPI 1659357341
  NPD (past)
• Caremore Medical Group Inc

  • Family Medicine Physician
  • Cerritos, CA
  • NPI 1760435705

  Internal Medicine

  NPD (past)
• Modesto Primary Care

  • Primary Care Clinic/Center
  • Modesto, CA
  • NPI 1841215530
  NPD (past)
• Olson & Madayag-Capuno,MDS

  • Internal Medicine Physician
  • Oakdale, CA
  • NPI 1205962420
  NPD (past)

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

{
    "created_epoch": "1153785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768694400000",
    "number": "1356364889",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380",
            "telephone_number": "702-579-3203"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4540 E 7TH ST",
            "city": "LONG BEACH",
            "state": "CA",
            "postal_code": "908044327",
            "telephone_number": "562-344-1150",
            "fax_number": "562-344-1155"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "19191 S Vermont Ave",
            "address_purpose": "LOCATION",
            "city": "Torrance",
            "state": "CA",
            "postal_code": "905021018",
            "country_code": "US",
            "telephone_number": "310-354-4221",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DUONG",
        "first_name": "JOHN",
        "middle_name": "T.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-25",
        "last_updated": "2026-01-18",
        "certification_date": "2026-01-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A66685",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A666850",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD ID #",
            "identifier": "00A666850",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Pamela Estel Dunn, D.C.
• Tkhai Dunschee
• Marcus Stewart Dunsworth, D.D.S.
• Duong Medical LLC
• Brandon Vinh-Khang Duong, DO
• Jonathan Duong
• Linda Sokhom Duong
• Thanh Thanh Duong
• Vira Duong
• Chandara Duongmeas

• Internal Medicine Physician in Long Beach, CA
• Providers in Long Beach, 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 Jan 18, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.