Individual provider Active NPI

Ben Ouyang

  • Medical Oncology Physician
  • Boston, MA
National Provider Identifier
1356091896
Registry record updated May 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
293679 Issued in MA
Practice address
55 Fruit St
Boston, MA 02114-2696
Phone
(617) 726-5820
NPI assigned
Mar 27, 2022
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 14, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Oncology Physician 207RX0202X 293679 MA Primary

Addresses

Primary practice location

55 Fruit St
Boston, MA 02114-2696

Mailing address

55 Fruit St
Boston, MA 02114-2696
Phone (617) 726-5820

Other names 1

  • Junfeng Ouyang Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
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

Enrollment IDStateProvider typePAC IDDetails
I20220908001570 MA Order and Referring Only - Internal MedicinePractitioner - Internal Medicine 0446634570

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

NPI Registry JSON

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

{
    "created_epoch": "1648339200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778716800000",
    "number": "1356091896",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142696",
            "telephone_number": "617-726-5820"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142696",
            "telephone_number": "617-726-5820"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OUYANG",
        "first_name": "BEN",
        "name_prefix": "Dr.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-03-27",
        "last_updated": "2026-05-14",
        "certification_date": "2026-05-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "MA",
            "license": "293679",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "JUNFENG",
            "last_name": "OUYANG",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.