Gregory Chang, M.D.

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

PENDING Issued in NY

Practice address

55 Fruit St
Boston, MA 02114-2621

Phone

(617) 724-0288

NPI assigned

Jul 11, 2007

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 NY

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

Diagnostic Radiology

Education

Harvard Medical School, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

New York UniversityGroup PAC ID 1355232422, 5,925 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• NYU Langone Hospitals Hospital, New York, NY, CCN 330214
• Long Island Community Hospital Hospital, Patchogue, NY, CCN 330141

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles (6 of 10)

Locations

Networks

• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H9678

Interoperability endpoints

• Direct secure messaging: gchang673741@nychhc.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 and National Provider Directory roles.

• New York City Health and Hospitals Corporation

  • Clinic/Center
  • New York, NY
  • NPI 1548208127

  NY

  Medicare reassignment NPD
• New York University

  • Cardiovascular Disease Physician
  • Boynton Beach, FL
  • NPI 1285826438

  NY

  Medicare reassignment NPD
• New York City Health and Hospitals Corporation

  • Clinic/Center
  • Bronx, NY
  • NPI 1003824608
  NPD
• New York City Health and Hospitals Corporation

  • Clinic/Center
  • New York, NY
  • NPI 1538943469
  NPD
• New York University

  • Physical Medicine & Rehabilitation Physician
  • Boynton Beach, FL
  • NPI 1104787613
  NPD
• New York University Medical Center Faculty Practice Radiology

  • Diagnostic Radiology Physician
  • New York, NY
  • NPI 1114038353

  Diagnostic Radiology

  NPD (past)

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

• NYU Langone Hospitals

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Patchogue, NY
  • NPI 1013724061

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • Rehabilitation Hospital Unit
  • New York, NY
  • NPI 1275632895

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • Ambulance
  • Brooklyn, NY
  • NPI 1346614443

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • General Acute Care Hospital
  • Mineola, NY
  • NPI 1427616002

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • Oncology Clinic/Center
  • New York, NY
  • NPI 1437230034

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • General Acute Care Hospital
  • Brooklyn, NY
  • NPI 1619341716

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • General Acute Care Hospital
  • New York, NY
  • NPI 1669578324

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • General Acute Care Hospital
  • New York, NY
  • NPI 1801992631

  Hospital

  Care Compare affiliation
• NYU Langone Hospitals

  • General Acute Care Hospital
  • Patchogue, NY
  • NPI 1831910355

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1184112000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786320000000",
    "number": "1881892883",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "660 FIRST AVENUE, 3RD FLOOR",
            "address_2": "DEPARTMENT OF RADIOLOGY, NYU LANGONE MEDICAL CENTER",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100163295",
            "telephone_number": "212-263-3350"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621",
            "telephone_number": "617-724-0288"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "660 1st Ave Fl 3",
            "address_2": "Department of Radiology, NYU Langone Medical Center",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100163295",
            "country_code": "US",
            "telephone_number": "212-263-3350 x3813",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHANG",
        "first_name": "GREGORY",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-07-11",
        "last_updated": "2026-08-10",
        "certification_date": "2026-08-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "NY",
            "license": "PENDING",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Denis Chang, MD
• Elvin Chang
• Emily Chang
• Emily Chang, MD
• Enchi Kristina Chang, MD
• Han-Ying Chang
• Hannah Han-Chun Chang, M.D., PH.D.
• Heidi Heekyung Chang, MD
• Il Won Chang, DDS
• In Gyu Chang

• All providers in Boston, MA
• Diagnostic Radiology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 10, 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.