Gregory Han, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

342101 Issued in NY

Practice address

525 E 68TH St
New York, NY 10065-4870

Phone

(877) 201-1838

NPI assigned

May 4, 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

Electronic endpoints 3

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

Emergency Medicine

Education

Other, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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 University

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

  NY

  Medicare reassignment

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

{
    "created_epoch": "1651622400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784505600000",
    "number": "1528703378",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "525 E 68TH ST DEPT OF",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100654870"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "525 E 68TH ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100654870",
            "telephone_number": "877-201-1838"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAN",
        "first_name": "GREGORY",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-05-04",
        "last_updated": "2026-07-20",
        "certification_date": "2026-07-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NY",
            "license": "342101",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gch4001@med.cornell.edu",
            "affiliation": "Y",
            "endpointDescription": "Email",
            "affiliationName": "New York Presbyterian Hospital",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Email",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gch4001@med.cornell.edu",
            "affiliation": "N",
            "endpointDescription": "Email",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "Email",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "EMail",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "dlv9002@nyp.org",
            "affiliation": "N",
            "endpointDescription": "Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Eunsook Han
• George Han, MD
• George Han
• George Z Han, MD, PHD
• Grace Han, MHC-LP
• Guangming Han, M.D.
• Hannah Han, D.D.S.
• Heedeok Han, M.D.
• Huiqian Han
• Irum Han, RN

• Emergency Medicine Physician in New York, NY
• Providers in New York, NY by specialty
• Emergency Medicine Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 20, 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.